Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > comp.sys.mac.system > #55220 > unrolled thread

Any quick, easy way to compare two images?

Started byDon Bruder <dakidd@sonic.net>
First post2014-01-23 10:42 -0800
Last post2014-01-23 22:06 -0500
Articles 20 on this page of 145 — 12 participants

Back to article view | Back to comp.sys.mac.system


Contents

  Any quick, easy way to compare two images? Don Bruder <dakidd@sonic.net> - 2014-01-23 10:42 -0800
    Re: Any quick, easy way to compare two images? nospam <nospam@nospam.invalid> - 2014-01-23 14:24 -0500
      Re: Any quick, easy way to compare two images? Don Bruder <dakidd@sonic.net> - 2014-01-23 13:00 -0800
        Re: Any quick, easy way to compare two images? Tom Stiller <clusterfux.upmon@gmail.com> - 2014-01-23 21:11 +0000
          Re: Any quick, easy way to compare two images? Don Bruder <dakidd@sonic.net> - 2014-01-23 16:38 -0800
            Re: Any quick, easy way to compare two images? john hevelin <bwotte@panix.com> - 2014-01-24 01:57 +0000
              Re: Any quick, easy way to compare two images? Doug Anderson <ethelthelogremovethis@gmail.com> - 2014-01-23 18:03 -0800
          Re: Any quick, easy way to compare two images? Don Bruder <dakidd@sonic.net> - 2014-01-23 21:25 -0800
        Re: Any quick, easy way to compare two images? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2014-01-23 16:31 -0500
          Re: Any quick, easy way to compare two images? nospam <nospam@nospam.invalid> - 2014-01-23 16:57 -0500
            Re: Any quick, easy way to compare two images? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2014-01-23 17:02 -0500
          Re: Any quick, easy way to compare two images? Don Bruder <dakidd@sonic.net> - 2014-01-23 21:28 -0800
        Re: Any quick, easy way to compare two images? nospam <nospam@nospam.invalid> - 2014-01-23 16:32 -0500
          Re: Any quick, easy way to compare two images? Don Bruder <dakidd@sonic.net> - 2014-01-23 16:22 -0800
            Re: Any quick, easy way to compare two images? Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-01-23 19:48 -0500
              Re: Any quick, easy way to compare two images? Don Bruder <dakidd@sonic.net> - 2014-01-23 23:54 -0800
                Re: Any quick, easy way to compare two images? Doug Anderson <ethelthelogremovethis@gmail.com> - 2014-01-24 08:09 -0800
                  Re: Any quick, easy way to compare two images? Don Bruder <dakidd@sonic.net> - 2014-01-24 08:44 -0800
            Re: Any quick, easy way to compare two images? nospam <nospam@nospam.invalid> - 2014-01-23 22:06 -0500
              Re: Any quick, easy way to compare two images? Don Bruder <dakidd@sonic.net> - 2014-01-23 23:37 -0800
    Re: Any quick, easy way to compare two images? Jolly Roger <jollyroger@pobox.com> - 2014-01-23 20:46 +0000
    Re: Any quick, easy way to compare two images? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2014-01-23 23:19 +0000
      Re: Any quick, easy way to compare two images? Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-01-23 18:38 -0500
        Re: Any quick, easy way to compare two images? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2014-01-24 00:49 +0000
          Re: Any quick, easy way to compare two images? Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-01-23 19:59 -0500
    Re: Any quick, easy way to compare two images? Doug Anderson <ethelthelogremovethis@gmail.com> - 2014-01-23 15:25 -0800
      Re: Any quick, easy way to compare two images? Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-01-23 18:37 -0500
        Re: Any quick, easy way to compare two images? Doug Anderson <ethelthelogremovethis@gmail.com> - 2014-01-23 16:05 -0800
          Re: Any quick, easy way to compare two images? Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-01-23 19:47 -0500
            Re: Any quick, easy way to compare two images? Doug Anderson <ethelthelogremovethis@gmail.com> - 2014-01-23 17:10 -0800
              Re: Any quick, easy way to compare two images? Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-01-24 17:42 -0500
                Re: Any quick, easy way to compare two images? Doug Anderson <ethelthelogremovethis@gmail.com> - 2014-01-24 16:42 -0800
                  Re: Any quick, easy way to compare two images? Don Bruder <dakidd@sonic.net> - 2014-01-24 20:08 -0800
                    Re: Any quick, easy way to compare two images? Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-01-25 10:54 -0500
                      Re: Any quick, easy way to compare two images? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2014-01-25 15:31 -0500
                        Re: Any quick, easy way to compare two images? Don Bruder <dakidd@sonic.net> - 2014-01-25 17:31 -0800
                          Re: Any quick, easy way to compare two images? Michael Vilain <vilain@NOspamcop.net> - 2014-01-25 17:57 -0800
                          Re: Any quick, easy way to compare two images? Jolly Roger <jollyroger@pobox.com> - 2014-01-26 03:09 +0000
                            Re: Any quick, easy way to compare two images? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2014-01-25 23:02 -0500
                              Re: Any quick, easy way to compare two images? Jolly Roger <jollyroger@pobox.com> - 2014-01-26 05:04 +0000
                  Re: Any quick, easy way to compare two images? Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-01-25 10:58 -0500
                    Re: Any quick, easy way to compare two images? Doug Anderson <ethelthelogremovethis@gmail.com> - 2014-01-25 10:29 -0800
                      Re: Any quick, easy way to compare two images? Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-01-25 13:39 -0500
                      Re: Any quick, easy way to compare two images? nospam <nospam@nospam.invalid> - 2014-01-25 13:45 -0500
                        Re: Any quick, easy way to compare two images? Doug Anderson <ethelthelogremovethis@gmail.com> - 2014-01-25 13:27 -0800
                          Re: Any quick, easy way to compare two images? nospam <nospam@nospam.invalid> - 2014-01-25 16:30 -0500
                            Re: Any quick, easy way to compare two images? Doug Anderson <ethelthelogremovethis@gmail.com> - 2014-01-25 13:33 -0800
                              Re: Any quick, easy way to compare two images? nospam <nospam@nospam.invalid> - 2014-01-25 16:52 -0500
                                Re: Any quick, easy way to compare two images? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2014-01-25 17:31 -0500
                                  Re: Any quick, easy way to compare two images? Jolly Roger <jollyroger@pobox.com> - 2014-01-25 22:35 +0000
                                    Re: Any quick, easy way to compare two images? nospam <nospam@nospam.invalid> - 2014-01-25 17:49 -0500
                                      Re: Any quick, easy way to compare two images? Tom Stiller <clusterfux.upmon@gmail.com> - 2014-01-25 22:55 +0000
                                      Re: Any quick, easy way to compare two images? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2014-01-25 18:33 -0500
                                        Re: Any quick, easy way to compare two images? nospam <nospam@nospam.invalid> - 2014-01-25 19:42 -0500
                                          Re: Any quick, easy way to compare two images? Don Bruder <dakidd@sonic.net> - 2014-01-25 17:38 -0800
                                            Re: Any quick, easy way to compare two images? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2014-01-25 22:50 -0500
                                          Re: Any quick, easy way to compare two images? Jolly Roger <jollyroger@pobox.com> - 2014-01-26 02:49 +0000
                                            Re: Any quick, easy way to compare two images? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2014-01-26 14:21 +0000
                                              Re: Any quick, easy way to compare two images? Jolly Roger <jollyroger@pobox.com> - 2014-01-26 15:17 +0000
                                                Re: Any quick, easy way to compare two images? nospam <nospam@nospam.invalid> - 2014-01-26 14:04 -0500
                                      Re: Any quick, easy way to compare two images? Jolly Roger <jollyroger@pobox.com> - 2014-01-26 00:17 +0000
                                        Re: Any quick, easy way to compare two images? nospam <nospam@nospam.invalid> - 2014-01-25 19:42 -0500
                                          Re: Any quick, easy way to compare two images? dorayme <do_ray_me@bigpond.com> - 2014-01-26 12:23 +1100
                                            Re: Any quick, easy way to compare two images? Jolly Roger <jollyroger@pobox.com> - 2014-01-26 02:54 +0000
                                          Re: Any quick, easy way to compare two images? Jolly Roger <jollyroger@pobox.com> - 2014-01-26 02:52 +0000
                                            Re: Any quick, easy way to compare two images? nospam <nospam@nospam.invalid> - 2014-01-25 22:10 -0500
                                              Re: Any quick, easy way to compare two images? Jolly Roger <jollyroger@pobox.com> - 2014-01-26 03:32 +0000
                                                Re: Any quick, easy way to compare two images? nospam <nospam@nospam.invalid> - 2014-01-25 22:55 -0500
                                                  Re: Any quick, easy way to compare two images? Jolly Roger <jollyroger@pobox.com> - 2014-01-26 05:02 +0000
                                                    Re: Any quick, easy way to compare two images? nospam <nospam@nospam.invalid> - 2014-01-26 14:04 -0500
                                      Re: Any quick, easy way to compare two images? Doug Anderson <ethelthelogremovethis@gmail.com> - 2014-01-25 18:03 -0800
                                        Re: Any quick, easy way to compare two images? nospam <nospam@nospam.invalid> - 2014-01-25 22:10 -0500
                                  Re: Any quick, easy way to compare two images? nospam <nospam@nospam.invalid> - 2014-01-25 17:49 -0500
                              Re: Any quick, easy way to compare two images? Savageduck <savageduck1@{REMOVESPAM}me.com> - 2014-01-25 15:59 -0800
                                Re: Any quick, easy way to compare two images? Jolly Roger <jollyroger@pobox.com> - 2014-01-26 00:24 +0000
                                Re: Any quick, easy way to compare two images? nospam <nospam@nospam.invalid> - 2014-01-25 19:42 -0500
                                  Re: Any quick, easy way to compare two images? Savageduck <savageduck1@{REMOVESPAM}me.com> - 2014-01-25 17:30 -0800
                                    Re: Any quick, easy way to compare two images? Jolly Roger <jollyroger@pobox.com> - 2014-01-26 02:57 +0000
                                  Re: Any quick, easy way to compare two images? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2014-01-25 22:46 -0500
                                    Re: Any quick, easy way to compare two images? Jolly Roger <jollyroger@pobox.com> - 2014-01-26 03:49 +0000
                                    Re: Any quick, easy way to compare two images? nospam <nospam@nospam.invalid> - 2014-01-25 22:55 -0500
                                Re: Any quick, easy way to compare two images? dorayme <do_ray_me@bigpond.com> - 2014-01-26 12:08 +1100
                                  Re: Any quick, easy way to compare two images? Savageduck <savageduck1@{REMOVESPAM}me.com> - 2014-01-25 17:31 -0800
                                    Re: Any quick, easy way to compare two images? dorayme <do_ray_me@bigpond.com> - 2014-01-26 13:00 +1100
                                      Re: Any quick, easy way to compare two images? Don Bruder <dakidd@sonic.net> - 2014-01-25 20:13 -0800
                                        Re: Any quick, easy way to compare two images? dorayme <do_ray_me@bigpond.com> - 2014-01-26 16:15 +1100
                                    Re: Any quick, easy way to compare two images? Doug Anderson <ethelthelogremovethis@gmail.com> - 2014-01-25 18:07 -0800
                                      Re: Any quick, easy way to compare two images? Savageduck <savageduck1@{REMOVESPAM}me.com> - 2014-01-25 18:24 -0800
                                      Re: Any quick, easy way to compare two images? Jolly Roger <jollyroger@pobox.com> - 2014-01-26 02:58 +0000
                                      Re: Any quick, easy way to compare two images? nospam <nospam@nospam.invalid> - 2014-01-25 22:10 -0500
                                Re: Any quick, easy way to compare two images? Don Bruder <dakidd@sonic.net> - 2014-01-25 17:36 -0800
                                  Re: Any quick, easy way to compare two images? Savageduck <savageduck1@{REMOVESPAM}me.com> - 2014-01-25 17:51 -0800
                                    Re: Any quick, easy way to compare two images? Don Bruder <dakidd@sonic.net> - 2014-01-26 00:39 -0800
                                      Re: Any quick, easy way to compare two images? Jolly Roger <jollyroger@pobox.com> - 2014-01-26 15:43 +0000
                                        Re: Any quick, easy way to compare two images? Doug Anderson <ethelthelogremovethis@gmail.com> - 2014-01-26 08:19 -0800
                                          Re: Any quick, easy way to compare two images? Jolly Roger <jollyroger@pobox.com> - 2014-01-26 16:31 +0000
                                            Re: Any quick, easy way to compare two images? Doug Anderson <ethelthelogremovethis@gmail.com> - 2014-01-26 09:54 -0800
                                              Re: Any quick, easy way to compare two images? Jolly Roger <jollyroger@pobox.com> - 2014-01-26 18:14 +0000
                                                Re: Any quick, easy way to compare two images? Doug Anderson <ethelthelogremovethis@gmail.com> - 2014-01-26 10:44 -0800
                                                  Re: Any quick, easy way to compare two images? Jolly Roger <jollyroger@pobox.com> - 2014-01-26 19:10 +0000
                                                  Re: Any quick, easy way to compare two images? dorayme <do_ray_me@bigpond.com> - 2014-01-27 11:14 +1100
                                                    Re: Any quick, easy way to compare two images? Doug Anderson <ethelthelogremovethis@gmail.com> - 2014-01-26 16:22 -0800
                                                      Re: Any quick, easy way to compare two images? dorayme <do_ray_me@bigpond.com> - 2014-01-27 11:44 +1100
                                                      Re: Any quick, easy way to compare two images? nospam <nospam@nospam.invalid> - 2014-01-27 13:06 -0500
                                              Re: Any quick, easy way to compare two images? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2014-01-27 12:48 +0000
                                                Re: Any quick, easy way to compare two images? Doug Anderson <ethelthelogremovethis@gmail.com> - 2014-01-27 05:49 -0800
                                          Re: Any quick, easy way to compare two images? Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-01-26 12:05 -0500
                                            Re: Any quick, easy way to compare two images? Jolly Roger <jollyroger@pobox.com> - 2014-01-26 17:08 +0000
                                              Re: Any quick, easy way to compare two images? Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-01-26 12:27 -0500
                                                Re: Any quick, easy way to compare two images? Jolly Roger <jollyroger@pobox.com> - 2014-01-26 17:37 +0000
                                              Re: Any quick, easy way to compare two images? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2014-01-26 15:36 -0500
                                                Re: Any quick, easy way to compare two images? Jolly Roger <jollyroger@pobox.com> - 2014-01-26 21:46 +0000
                                          Re: Any quick, easy way to compare two images? nospam <nospam@nospam.invalid> - 2014-01-26 14:04 -0500
                                            Re: Any quick, easy way to compare two images? Doug Anderson <ethelthelogremovethis@gmail.com> - 2014-01-26 12:16 -0800
                                              Re: Any quick, easy way to compare two images? Jolly Roger <jollyroger@pobox.com> - 2014-01-26 21:47 +0000
                                                Re: Any quick, easy way to compare two images? Doug Anderson <ethelthelogremovethis@gmail.com> - 2014-01-26 16:21 -0800
                                                  Re: Any quick, easy way to compare two images? Jolly Roger <jollyroger@pobox.com> - 2014-01-27 01:57 +0000
                                        Re: Any quick, easy way to compare two images? Don Bruder <dakidd@sonic.net> - 2014-01-26 10:32 -0800
                                          Re: Any quick, easy way to compare two images? Jolly Roger <jollyroger@pobox.com> - 2014-01-26 18:54 +0000
                                          Re: Any quick, easy way to compare two images? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2014-01-26 15:40 -0500
                                          Re: Any quick, easy way to compare two images? Savageduck <savageduck1@{REMOVESPAM}me.com> - 2014-01-26 13:30 -0800
                                            Re: Any quick, easy way to compare two images? Don Bruder <dakidd@sonic.net> - 2014-01-26 15:06 -0800
                                              Re: Any quick, easy way to compare two images? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2014-01-26 18:20 -0500
                                              Re: Any quick, easy way to compare two images? Jolly Roger <jollyroger@pobox.com> - 2014-01-26 23:35 +0000
                                                Re: Any quick, easy way to compare two images? nospam <nospam@nospam.invalid> - 2014-01-27 13:06 -0500
                                                  Re: Any quick, easy way to compare two images? Jolly Roger <jollyroger@pobox.com> - 2014-01-27 19:14 +0000
                                                    Re: Any quick, easy way to compare two images? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2014-01-27 23:18 -0500
                                                      Re: Any quick, easy way to compare two images? Jolly Roger <jollyroger@pobox.com> - 2014-01-28 04:27 +0000
                                                      Re: Any quick, easy way to compare two images? nospam <nospam@nospam.invalid> - 2014-01-29 14:01 -0500
                                                    Re: Any quick, easy way to compare two images? nospam <nospam@nospam.invalid> - 2014-01-29 14:01 -0500
                                              Re: Any quick, easy way to compare two images? john hevelin <bwotte@panix.com> - 2014-01-27 01:19 +0000
                                                Re: Any quick, easy way to compare two images? Don Bruder <dakidd@sonic.net> - 2014-01-26 18:28 -0800
                                                  Re: Any quick, easy way to compare two images? john hevelin <bwotte@panix.com> - 2014-01-28 02:26 +0000
                                                    Re: Any quick, easy way to compare two images? Don Bruder <dakidd@sonic.net> - 2014-01-28 06:35 -0800
                                          Re: Any quick, easy way to compare two images? dorayme <do_ray_me@bigpond.com> - 2014-01-27 10:55 +1100
                                  Re: Any quick, easy way to compare two images? nospam <nospam@nospam.invalid> - 2014-01-25 22:10 -0500
                                    Re: Any quick, easy way to compare two images? Doug Anderson <ethelthelogremovethis@gmail.com> - 2014-01-25 21:41 -0800
                                      Re: Any quick, easy way to compare two images? nospam <nospam@nospam.invalid> - 2014-01-26 14:04 -0500
                                  Re: Any quick, easy way to compare two images? Jolly Roger <jollyroger@pobox.com> - 2014-01-26 03:13 +0000
                          Re: Any quick, easy way to compare two images? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2014-01-25 17:30 -0500
                      Re: Any quick, easy way to compare two images? john hevelin <bwotte@panix.com> - 2014-01-25 18:51 +0000
                        Re: Any quick, easy way to compare two images? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2014-01-25 19:06 +0000
                        Re: Any quick, easy way to compare two images? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2014-01-25 15:37 -0500
                    Re: Any quick, easy way to compare two images? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2014-01-25 15:35 -0500
          Re: Any quick, easy way to compare two images? nospam <nospam@nospam.invalid> - 2014-01-23 22:06 -0500

Page 5 of 8 — ← Prev page 1 2 3 4 [5] 6 7 8  Next page →


#55411

Fromnospam <nospam@nospam.invalid>
Date2014-01-25 22:55 -0500
Message-ID<250120142255449064%nospam@nospam.invalid>
In reply to#55407
In article <52e48517$0$45923$c3e8da3$88b277c5@news.astraweb.com>, JF
Mezei <jfmezei.spamnot@vaxination.ca> wrote:

> > that's an exif tag *in* the file, not metadata within the file system.
> 
> The OP has specified there is NO EXIF data in the images. He has not
> specified is file creation dates available to his app reflect data
> transfer timestamp, or image file creation.

actually he didn't. savageduck brought up exif tags, and the creation
date in the exif. that wasn't what i was referring to. 

> Remember, images are transfered to his systrem at regular intervals, and
> may transfer the same image more than once if the camera ghas not
> regerated the image file in that interval.

without knowing the specs of the camera, there's no way to know what it
does or doesn't do.

[toc] | [prev] | [next] | [standalone]


#55376

Fromdorayme <do_ray_me@bigpond.com>
Date2014-01-26 12:08 +1100
Message-ID<do_ray_me-A11CB7.12083926012014@news.albasani.net>
In reply to#55368
In article <2014012515592033890-savageduck1@REMOVESPAMmecom>,
 Savageduck <savageduck1@{REMOVESPAM}me.com> wrote:

> Why worry if one frame appears visually identical 
> tthe one before it, or the one after, That does happen in 
> cinematography.

Because the film might then be too long to view for some practical 
purposes?

-- 
dorayme

[toc] | [prev] | [next] | [standalone]


#55380

FromSavageduck <savageduck1@{REMOVESPAM}me.com>
Date2014-01-25 17:31 -0800
Message-ID<2014012517312260083-savageduck1@REMOVESPAMmecom>
In reply to#55376
On 2014-01-26 01:08:41 +0000, dorayme <do_ray_me@bigpond.com> said:

> In article <2014012515592033890-savageduck1@REMOVESPAMmecom>,
>  Savageduck <savageduck1@{REMOVESPAM}me.com> wrote:
> 
>> Why worry if one frame appears visually identical
>> tthe one before it, or the one after, That does happen in
>> cinematography.
> 
> Because the film might then be too long to view for some practical
> purposes?

Then one needs to ask what the purpose of this production might be?

-- 
Regards,

Savageduck

[toc] | [prev] | [next] | [standalone]


#55387

Fromdorayme <do_ray_me@bigpond.com>
Date2014-01-26 13:00 +1100
Message-ID<do_ray_me-065A62.13004626012014@news.albasani.net>
In reply to#55380
In article <2014012517312260083-savageduck1@REMOVESPAMmecom>,
 Savageduck <savageduck1@{REMOVESPAM}me.com> wrote:

> On 2014-01-26 01:08:41 +0000, dorayme <do_ray_me@bigpond.com> said:
> 
> > In article <2014012515592033890-savageduck1@REMOVESPAMmecom>,
> >  Savageduck <savageduck1@{REMOVESPAM}me.com> wrote:
> > 
> >> Why worry if one frame appears visually identical
> >> tthe one before it, or the one after, That does happen in
> >> cinematography.
> > 
> > Because the film might then be too long to view for some practical
> > purposes?
> 
> Then one needs to ask what the purpose of this production might be?

OK. Let me. 

HEY, OP, WHAT IS THE PURPOSE OF YOUR PRODUCTION?

(In a house I was living in, a ringtail possum had got into the roof 
and I had taken some steps to block it from re-entering but could not 
be sure it was out? I set up a camera to take a movie for hours on end 
but then could not be bothered to spend so much time or attention 
examining the hours of footage to see if there was a significant 
ringtailpossum change in the frames... I made a post about ways to 
tell with software... but it became clear that the possum had gone by 
then...)

-- 
dorayme

[toc] | [prev] | [next] | [standalone]


#55413

FromDon Bruder <dakidd@sonic.net>
Date2014-01-25 20:13 -0800
Message-ID<lc21vg$loj$1@dont-email.me>
In reply to#55387
In article <do_ray_me-065A62.13004626012014@news.albasani.net>,
 dorayme <do_ray_me@bigpond.com> wrote:

> In article <2014012517312260083-savageduck1@REMOVESPAMmecom>,
>  Savageduck <savageduck1@{REMOVESPAM}me.com> wrote:
> 
> > On 2014-01-26 01:08:41 +0000, dorayme <do_ray_me@bigpond.com> said:
> > 
> > > In article <2014012515592033890-savageduck1@REMOVESPAMmecom>,
> > >  Savageduck <savageduck1@{REMOVESPAM}me.com> wrote:
> > > 
> > >> Why worry if one frame appears visually identical
> > >> tthe one before it, or the one after, That does happen in
> > >> cinematography.
> > > 
> > > Because the film might then be too long to view for some practical
> > > purposes?
> > 
> > Then one needs to ask what the purpose of this production might be?
> 
> OK. Let me. 
> 
> HEY, OP, WHAT IS THE PURPOSE OF YOUR PRODUCTION?

NUNYA FUGGIN BIDNESS! :)

But seriously, it's a "because I decided I wanted to do it" project. 
Does it need to have some purpose beyond that? 

> 
> (In a house I was living in, a ringtail possum had got into the roof 
> and I had taken some steps to block it from re-entering but could not 
> be sure it was out? I set up a camera to take a movie for hours on end 
> but then could not be bothered to spend so much time or attention 
> examining the hours of footage to see if there was a significant 
> ringtailpossum change in the frames... I made a post about ways to 
> tell with software... but it became clear that the possum had gone by 
> then...)

Heh... Possum-inspired software development... Who'da thunk it? :)

-- 
Security provided by Mssrs Smith and/or Wesson. Brought to you by the letter Q

[toc] | [prev] | [next] | [standalone]


#55418

Fromdorayme <do_ray_me@bigpond.com>
Date2014-01-26 16:15 +1100
Message-ID<do_ray_me-77AAB3.16151526012014@news.albasani.net>
In reply to#55413
In article <lc21vg$loj$1@dont-email.me>,
 Don Bruder <dakidd@sonic.net> wrote:

> But seriously, it's a "because I decided I wanted to do it" project. 
> Does it need to have some purpose beyond that? 

No. There's nothing at all wrong with that. But sometimes a purpose 
sheds light on the problem. Without such a purpose, it is a more 
difficult task to get people to understand exactly what it is you are 
looking for. As you have found.

-- 
dorayme

[toc] | [prev] | [next] | [standalone]


#55390

FromDoug Anderson <ethelthelogremovethis@gmail.com>
Date2014-01-25 18:07 -0800
Message-ID<twwqhn3389.fsf@ethel.the.log>
In reply to#55380
Savageduck <savageduck1@{REMOVESPAM}me.com> writes:

> On 2014-01-26 01:08:41 +0000, dorayme <do_ray_me@bigpond.com> said:
> 
> > In article <2014012515592033890-savageduck1@REMOVESPAMmecom>,
> >  Savageduck <savageduck1@{REMOVESPAM}me.com> wrote:
> >
> >> Why worry if one frame appears visually identical
> >> tthe one before it, or the one after, That does happen in
> >> cinematography.
> > Because the film might then be too long to view for some practical
> > purposes?
> 
> Then one needs to ask what the purpose of this production might be?

One doesn't really need to ask this.

The OP asked a reasonable question.  It has reasonable answers.

Presumably he has a reason for wanting to do what he wants to do.  Why
is it important to tell him he shouldn't want to do it?

[toc] | [prev] | [next] | [standalone]


#55391

FromSavageduck <savageduck1@{REMOVESPAM}me.com>
Date2014-01-25 18:24 -0800
Message-ID<2014012518242126472-savageduck1@REMOVESPAMmecom>
In reply to#55390
On 2014-01-26 02:07:34 +0000, Doug Anderson 
<ethelthelogremovethis@gmail.com> said:

> Savageduck <savageduck1@{REMOVESPAM}me.com> writes:
> 
>> On 2014-01-26 01:08:41 +0000, dorayme <do_ray_me@bigpond.com> said:
>> 
>>> In article <2014012515592033890-savageduck1@REMOVESPAMmecom>,
>>> Savageduck <savageduck1@{REMOVESPAM}me.com> wrote:
>>> 
>>>> Why worry if one frame appears visually identical
>>>> tthe one before it, or the one after, That does happen in
>>>> cinematography.
>>> Because the film might then be too long to view for some practical
>>> purposes?
>> 
>> Then one needs to ask what the purpose of this production might be?
> 
> One doesn't really need to ask this.
> 
> The OP asked a reasonable question.  It has reasonable answers.
> 
> Presumably he has a reason for wanting to do what he wants to do.  Why
> is it important to tell him he shouldn't want to do it?

You misunderstand me. It isn't important to tell him he shouldn't want 
to do it. It might help to find a solution to his problem if his 
purpose was clear to those pondering a solution.

What is the point in offering a possible solution, if the OP's response 
is "No, that's not what I want"? As much as I understand he is 
concerned about his camera sneaking a duplicate, or two into the frame 
set, I am still baffled as to what camera might behave in this way, and 
I have been using cameras of various types for some 55+years now. That 
includes surveillance cameras. Every frame I have ever seen captured 
has been unique, never a duplicate. So there are a few pieces of the 
OP's story missing.
Why would he believe his camera is behaving in this odd way?
Why is he uncertain of the originality of each frame?
...and WTF is he going to do with this once he figures it out and comes 
up with a result he might be happy with?


-- 
Regards,

Savageduck

[toc] | [prev] | [next] | [standalone]


#55399

FromJolly Roger <jollyroger@pobox.com>
Date2014-01-26 02:58 +0000
Message-ID<bkjbuuF3qa4U6@mid.individual.net>
In reply to#55390
On 2014-01-26, Doug Anderson <ethelthelogremovethis@gmail.com> wrote:
> Savageduck <savageduck1@{REMOVESPAM}me.com> writes:
>
>> On 2014-01-26 01:08:41 +0000, dorayme <do_ray_me@bigpond.com> said:
>> 
>> > In article <2014012515592033890-savageduck1@REMOVESPAMmecom>,
>> >  Savageduck <savageduck1@{REMOVESPAM}me.com> wrote:
>> >
>> >> Why worry if one frame appears visually identical
>> >> tthe one before it, or the one after, That does happen in
>> >> cinematography.
>> > Because the film might then be too long to view for some practical
>> > purposes?
>> 
>> Then one needs to ask what the purpose of this production might be?
>
> One doesn't really need to ask this.
>
> The OP asked a reasonable question.  It has reasonable answers.
>
> Presumably he has a reason for wanting to do what he wants to do.  Why
> is it important to tell him he shouldn't want to do it?

It's the only way jackasses who have an invalid position can defend that
position.

-- 
E-mail sent to this address may be devoured by my ravenous SPAM filter.
I often ignore posts from Google. Use a real news client instead.

JR

[toc] | [prev] | [next] | [standalone]


#55401

Fromnospam <nospam@nospam.invalid>
Date2014-01-25 22:10 -0500
Message-ID<250120142210135210%nospam@nospam.invalid>
In reply to#55390
In article <twwqhn3389.fsf@ethel.the.log>, Doug Anderson
<ethelthelogremovethis@gmail.com> wrote:

> > Then one needs to ask what the purpose of this production might be?
> 
> One doesn't really need to ask this.

actually one does, since it helps figure out what is really needed.
otherwise people must guess.

> The OP asked a reasonable question.  It has reasonable answers.

no, he asked a convoluted question that was poorly described and
confused people, then got pissed when the answers weren't what he
asked.

> Presumably he has a reason for wanting to do what he wants to do.  Why
> is it important to tell him he shouldn't want to do it?

maybe, but it also might not be the best solution to what he wants to
do, which is likely given his confusion in how he asked the question.

many times, describing the problem and the desired goal helps people
come up with solutions that the person never thought of. 

in other words, 'what are you really trying to do?'

[toc] | [prev] | [next] | [standalone]


#55381

FromDon Bruder <dakidd@sonic.net>
Date2014-01-25 17:36 -0800
Message-ID<lc1opr$h1d$2@dont-email.me>
In reply to#55368
In article <2014012515592033890-savageduck1@REMOVESPAMmecom>,
 Savageduck <savageduck1@{REMOVESPAM}me.com> wrote:

> On 2014-01-25 21:33:25 +0000, Doug Anderson 
> <ethelthelogremovethis@gmail.com> said:
> 
> > nospam <nospam@nospam.invalid> writes:
> > 
> >> In article <vey523eopt.fsf@ethel.the.log>, Doug Anderson
> >> <ethelthelogremovethis@gmail.com> wrote:
> >> 
> >>>> if he wants to know it's a different *file*, all that needs to be done
> >>>> is compare the creation date. there's no reason to bother with
> >>>> comparing pixels.
> >>> 
> >>> That might work, but it might not.  Depending on the protocal by which
> >>> the file was tranmitted to his computer, the creation dates could be
> >>> different even though the contents of the files are identical.
> >> 
> >> if the creation date was changed (or any other attribute or metadata),
> >> then it's not an exact copy.
> > 
> > You want to add anything else to opinions you express that betray you
> > know nothing about what you are talking about?
> > 
> > If I have a file I made yesterday (call it file1), I can make a copy
> > today and call it file2.  The creation date of file1 will be yesterday
> > and of file2 will be today.
> > 
> > But if I do a diff or a cmp on file1 and file2, they will be shown to
> > be identical as they contaion the _same_ data on a byte-by-byte basis.
> > 
> > Just try it if you don't believe me - don't waste 30 posts saying black
> > is white.
> 
> Personally this whole project seems a little silly to me The OP should 
> just make his time lapse cqptures and compile them into the video/movie 
> format of his choice. Why worry if one frame appears visually identical 
> tthe one before it, or the one after, That does happen in 
> cinematography.

I *DON'T* care if the frames are visually different. The first one could 
be solid black, the next solid blue, and the one after that, solid red. 
All I care about is "OK, I grabbed the first image. Now it's time to 
grab a new image - did I get the same image I just got, or did I get a 
new one?"

-- 
Security provided by Mssrs Smith and/or Wesson. Brought to you by the letter Q

[toc] | [prev] | [next] | [standalone]


#55384

FromSavageduck <savageduck1@{REMOVESPAM}me.com>
Date2014-01-25 17:51 -0800
Message-ID<2014012517510124273-savageduck1@REMOVESPAMmecom>
In reply to#55381
On 2014-01-26 01:36:31 +0000, Don Bruder <dakidd@sonic.net> said:

> In article <2014012515592033890-savageduck1@REMOVESPAMmecom>,
>  Savageduck <savageduck1@{REMOVESPAM}me.com> wrote:
> 
>> On 2014-01-25 21:33:25 +0000, Doug Anderson
>> <ethelthelogremovethis@gmail.com> said:
>> 
>>> nospam <nospam@nospam.invalid> writes:
>>> 
>>>> In article <vey523eopt.fsf@ethel.the.log>, Doug Anderson
>>>> <ethelthelogremovethis@gmail.com> wrote:
>>>> 
>>>>>> if he wants to know it's a different *file*, all that needs to be done
>>>>>> is compare the creation date. there's no reason to bother with
>>>>>> comparing pixels.
>>>>> 
>>>>> That might work, but it might not.  Depending on the protocal by which
>>>>> the file was tranmitted to his computer, the creation dates could be
>>>>> different even though the contents of the files are identical.
>>>> 
>>>> if the creation date was changed (or any other attribute or metadata),
>>>> then it's not an exact copy.
>>> 
>>> You want to add anything else to opinions you express that betray you
>>> know nothing about what you are talking about?
>>> 
>>> If I have a file I made yesterday (call it file1), I can make a copy
>>> today and call it file2.  The creation date of file1 will be yesterday
>>> and of file2 will be today.
>>> 
>>> But if I do a diff or a cmp on file1 and file2, they will be shown to
>>> be identical as they contaion the _same_ data on a byte-by-byte basis.
>>> 
>>> Just try it if you don't believe me - don't waste 30 posts saying black
>>> is white.
>> 
>> Personally this whole project seems a little silly to me The OP should
>> just make his time lapse captures and compile them into the video/movie
>> format of his choice. Why worry if one frame appears visually identical
>> to the one before it, or the one after, That does happen in
>> cinematography.
> 
> I *DON'T* care if the frames are visually different.

That was not quite what I said.

> The first one could be solid black, the next solid blue, and the one 
> after that, solid red.
> All I care about is "OK, I grabbed the first image. Now it's time to
> grab a new image - did I get the same image I just got, or did I get a
> new one?"

If you are doing this project as some sort of time lapse photography 
exercise, then each frame SHOULD be unique just based on capture time. 
Why would you not trust your camera to capture the images one at a 
time? Even if it ran for several hours, and it was tough for you to 
differentiate between adjacent frames, each frame should be unique. So, 
if you have 5 solid black frames in a row, followed by 5 solid blue, 
and then 5 solid red frames, each should be unique based on capture 
time, not duplicates of the first obviously different frame set.
What is it about your camera which makes you suspect that it is just 
duplicating subsequent frames? That would be very odd behavior indeed.

...and finally, what is the purpose of this project?

-- 
Regards,

Savageduck

[toc] | [prev] | [next] | [standalone]


#55420

FromDon Bruder <dakidd@sonic.net>
Date2014-01-26 00:39 -0800
Message-ID<lc2hj5$loj$2@dont-email.me>
In reply to#55384
In article <2014012517510124273-savageduck1@REMOVESPAMmecom>,
 Savageduck <savageduck1@{REMOVESPAM}me.com> wrote:

> If you are doing this project as some sort of time lapse photography 
> exercise, then each frame SHOULD be unique just based on capture time. 
> Why would you not trust your camera to capture the images one at a 
> time? 

Did *ANYBODY* who's still nit-picking at this thread actually *READ* my 
initial post and the clarification in response to "nospam" back at the 
start of this thread? I did my best to explain things so that between 
the two, I thought it should be all but impossible to not understand 
what I'm doing. (I thought the first one alone was pretty clear, but 
considering the East Elbonian clusterfuck this thread has turned into...)

Here - eyeball it yourself:

What follows is the body of the message I'm talking about. Or, retrieve 
it yourself - Message-ID: <lbrvrh$7ua$1@dont-email.me> 
-=-=-=-=-=-=-=-
> In article <230120141424174937%nospam@nospam.invalid>,
>  nospam <nospam@nospam.invalid> wrote:
> 
> > In article <lbrnpr$q5o$1@dont-email.me>, Don Bruder <dakidd@sonic.net>
> > wrote:
> > 
> > > Long story short, I'm messing with an app to assemble a stream of webcam 
> > > images into a crude stop-motion movie. 
> > > 
> > > Since the images may arrive at irregular intervals, I'd like to be able 
> > > to do something similar to this:
> > > 
> > > NSImage *PreviousImage; // Global to the class
> > > 
> > > -(NSImage *)getNewImage:(NSString *)ImageSourceURL
> > > {
> > >    NSImage *NewImage = [self grabImageFrom:ImageSourceURL];
> > >    if (MAGIC)
> > >      {
> > >         // Yes, it's a new image
> > >         if (PreviousImage)
> > >           [PreviousImage release]; // Dump the old one, if any
> > >         PreviousImage = [NewImage copy]; // replace with new one
> > >         return NewImage; // and send the new one back to caller
> > >      }
> > >    else
> > >      // Nope, image hasn't changed.
> > >      return nil;
> > > } 
> > > 
> > > Where "MAGIC" needs to be a routine that returns a YES/NO to the 
> > > question "Is NewImage the same as PreviousImage"?
> > > 
> > > Is there a reasonably painless cocoa/core foundation way to do this, or 
> > > am I stuck going right down onto the metal and doing a pixel-by-pixel 
> > > comparison "by hand"?
> > > 
> > > From what I've managed to find in the various cocoa docs, it *LOOKS* as 
> > > though the "compare" type methods I can spot decide on equality by 
> > > saying "Is this *POINTER* to an NSImage the same as this *OTHER POINTER* 
> > > to an NSImage?", without actually looking at the images themselves - 
> > > only the pointers to them. Which makes it look as though, should I 
> > > assign two identical images to two different NSImages, they'll compare 
> > > "not the same", despite the fact that they're identical. Or am I 
> > > mis-reading things?
> > 
> > the default comparison is by pointer, so you'd need to write your own
> > equality (and hash) methods. how would it know what you consider
> > 'equal' ? it can't. 
> 
> That's what I was afraid the docs were saying... <sigh> 
> 
> > also keep in mind that the camera won't produce pixel identical results
> > on every frame, even when nothing has changed, 
> 
> That alone could be used to tell me "This is a new image". I don't care 
> if the content of the image has changed, or how, or by how much - I only 
> care that the two images either are, or are not, two copies of the same 
> image.
> 
> Lemme clarify...
> The source I'm using obviously runs a loop something along the lines of 
> "wake up, get an image from the camera, turn it into a JPG file, and 
> stick it someplace on the server so the world can get to it, then go to 
> sleep for a while". The problem is that "for a while" isn't a stable 
> value - Sometimes it's once per minute, sometimes once per 62 seconds, 
> sometimes once per second, sometimes once per hour, with no indication 
> of what condition(s) make it vary. I want to grab every available image, 
> but NOT grab umpty-nine copies of an image that's been sitting there for 
> who-knows-how-long 
> 
> > so you can't just loop
> > through all pixels and compare. the values will vary slightly.
> 
> I don't see why not - Like I said above, I don't care if the *image 
> content* changes - only that "the image" I get is or is not the same one 
> I got the last time I grabbed it.
> 
> > this is also something that's been solved before, so you probably can
> > find existing image matching or motion detection code.
> 
> For what I'm trying to do, image matching and/or motion detection is 
> likely to be overkill on the order of using a sledgehammer to peel a 
> hard boiled egg. 
> 
> If I have to look at the pixels, I expect something as simple as ANDing 
> them together and calling it "new" if I get back a not-the-same value 
> from the operation should do the trick.

-- 
Security provided by Mssrs Smith and/or Wesson. Brought to you by the letter Q

[toc] | [prev] | [next] | [standalone]


#55430

FromJolly Roger <jollyroger@pobox.com>
Date2014-01-26 15:43 +0000
Message-ID<bkkopbFccv0U3@mid.individual.net>
In reply to#55420
On 2014-01-26, Don Bruder <dakidd@sonic.net> wrote:
> In article <2014012517510124273-savageduck1@REMOVESPAMmecom>,
>  Savageduck <savageduck1@{REMOVESPAM}me.com> wrote:
>
>> If you are doing this project as some sort of time lapse photography 
>> exercise, then each frame SHOULD be unique just based on capture time. 
>> Why would you not trust your camera to capture the images one at a 
>> time? 
>
> Did *ANYBODY* who's still nit-picking at this thread actually *READ* my 
> initial post and the clarification in response to "nospam" back at the 
> start of this thread? I did my best to explain things so that between 
> the two, I thought it should be all but impossible to not understand 
> what I'm doing. (I thought the first one alone was pretty clear, but 
> considering the East Elbonian clusterfuck this thread has turned into...)
>
> Here - eyeball it yourself:
>
> What follows is the body of the message I'm talking about. Or, retrieve 
> it yourself - Message-ID: <lbrvrh$7ua$1@dont-email.me> 

[snip]

You say:

"I'm messing with an app to assemble a stream of webcam images into a
crude stop-motion movie." and that you need "a routine that returns a
YES/NO to the question "Is NewImage the same as PreviousImage"".

Then later you say:

"I want to grab every available image, but NOT grab umpty-nine copies of
an image that's been sitting there for who-knows-how-long"

The reason we are still talking about this is you have not sufficiently
articulated what you want. In your OP, you seem to imply that this
network camera captures images of a scene at irregular intervals, and
that you have a collection of those images that you want to process to
eliminate captures of the scene that are not substantially different.
What you have failed to do, as far as I am aware, is explain how any of
those images are what you consider to be "duplicates", nor what you
would consider to be "different". 

I have such network cameras in my home right now. I have some
hand-written software that polls them whenever I leave the house to
capture images from the cameras and store them on a file server, and
then later create a QuickTime movie consisting of a stream of those
captured images. From one moment to the next, there may be multiple
image file snapshots of that scene. These are distinctly different image
captures of a scene that is not changing by much. So I end up with a
stream of images that capture a scene over a time span. And while I can
visually see with my eye that not much in the scene changed, the images
(due to JPEG compression artifacts, ISO noise, and other factors such as
natural lighting changes) are distinctly different such that a simple
comparison algorithm such as diff will report that all of the imags are
different, which will not tell me whether the changes are worth my
attention. So I use a piece of software called motiontrack
<http://motiontrack.sourceforge.net> to compare the images in such a way
that allows me to assign a threshold to each comparison representing the
amount of change in the scene I am willing to allow before I take
action. 

If scenes that appear similar to the naked eye yet have no interesting
changes is what you consider to be an unwanted "duplicate image",
that's one thing. But if you are saying that somehow you are getting
perfect replica duplicate images somehow, that's a whole different
thing. So you really need to clarify this. Which is it, really?

-- 
E-mail sent to this address may be devoured by my ravenous SPAM filter.
I often ignore posts from Google. Use a real news client instead.

JR

[toc] | [prev] | [next] | [standalone]


#55432

FromDoug Anderson <ethelthelogremovethis@gmail.com>
Date2014-01-26 08:19 -0800
Message-ID<eappned8cd.fsf@ethel.the.log>
In reply to#55430
Jolly Roger <jollyroger@pobox.com> writes:

(snip)

> The reason we are still talking about this is you have not sufficiently
> articulate what you want.

But he has.. The reason we are still talking about it is that some
people jumped to the wrong conclusion about what he wanted, and this
being usenet, they won't let go no matter how clearly he articulates
it.

> In your OP, you seem to imply that this
> network camera captures images of a scene at irregular intervals, and
> that you have a collection of those images that you want to process to
> eliminate captures of the scene that are not substantially
> different.

No, he didn't imply that. He specifically used the words "the same
as."

Not "look the same," not "similar to a human eye."

The only way I can see for someone to be confused is if they read the
subject line (which was a bit ambiguous) but not the post.. Of course
_no one_ on USENET would ever do that!

[toc] | [prev] | [next] | [standalone]


#55433

FromJolly Roger <jollyroger@pobox.com>
Date2014-01-26 16:31 +0000
Message-ID<bkkrj5FdencU1@mid.individual.net>
In reply to#55432
On 2014-01-26, Doug Anderson <ethelthelogremovethis@gmail.com> wrote:
> Jolly Roger <jollyroger@pobox.com> writes:
>
> (snip)
>
>> The reason we are still talking about this is you have not sufficiently
>> articulate what you want.
>
> But he has.. The reason we are still talking about it is that some
> people jumped to the wrong conclusion about what he wanted, and this
> being usenet, they won't let go no matter how clearly he articulates
> it.
>
>> In your OP, you seem to imply that this
>> network camera captures images of a scene at irregular intervals, and
>> that you have a collection of those images that you want to process to
>> eliminate captures of the scene that are not substantially
>> different.
>
> No, he didn't imply that. He specifically used the words "the same
> as."

Sorry, but the phrase "the same as" can be interpreted in several
ways. He needs to be more explicit here to remove ambiguity.

> Not "look the same," not "similar to a human eye."

While he may not have used these words, it's still not clear to me what
he really means. 

And if the duplicate copies are truly exact copies, how are they being
generated?

> The only way I can see for someone to be confused is if they read the
> subject line (which was a bit ambiguous) but not the post.. Of course
> _no one_ on USENET would ever do that!

No, the confusion is from a lack of information.

-- 
E-mail sent to this address may be devoured by my ravenous SPAM filter.
I often ignore posts from Google. Use a real news client instead.

JR

[toc] | [prev] | [next] | [standalone]


#55438

FromDoug Anderson <ethelthelogremovethis@gmail.com>
Date2014-01-26 09:54 -0800
Message-ID<i438kaaat1.fsf@ethel.the.log>
In reply to#55433
Jolly Roger <jollyroger@pobox.com> writes:

> On 2014-01-26, Doug Anderson <ethelthelogremovethis@gmail.com> wrote:
> > Jolly Roger <jollyroger@pobox.com> writes:
> >
> > (snip)
> >
> >> The reason we are still talking about this is you have not sufficiently
> >> articulate what you want.
> >
> > But he has.. The reason we are still talking about it is that some
> > people jumped to the wrong conclusion about what he wanted, and this
> > being usenet, they won't let go no matter how clearly he articulates
> > it.
> >
> >> In your OP, you seem to imply that this
> >> network camera captures images of a scene at irregular intervals, and
> >> that you have a collection of those images that you want to process to
> >> eliminate captures of the scene that are not substantially
> >> different.
> >
> > No, he didn't imply that. He specifically used the words "the same
> > as."
> 
> Sorry, but the phrase "the same as" can be interpreted in several
> ways.

Perhaps.  But it does not imply "not substantially different."

[toc] | [prev] | [next] | [standalone]


#55439

FromJolly Roger <jollyroger@pobox.com>
Date2014-01-26 18:14 +0000
Message-ID<bkl1kdFejueU1@mid.individual.net>
In reply to#55438
On 2014-01-26, Doug Anderson <ethelthelogremovethis@gmail.com> wrote:
> Jolly Roger <jollyroger@pobox.com> writes:
>
>> On 2014-01-26, Doug Anderson <ethelthelogremovethis@gmail.com> wrote:
>> > Jolly Roger <jollyroger@pobox.com> writes:
>> >
>> > (snip)
>> >
>> >> The reason we are still talking about this is you have not
>> >> sufficiently articulate what you want.
>> >
>> > But he has.. The reason we are still talking about it is that some
>> > people jumped to the wrong conclusion about what he wanted, and
>> > this being usenet, they won't let go no matter how clearly he
>> > articulates it.
>> >
>> >> In your OP, you seem to imply that this network camera captures
>> >> images of a scene at irregular intervals, and that you have a
>> >> collection of those images that you want to process to eliminate
>> >> captures of the scene that are not substantially different.
>> >
>> > No, he didn't imply that. He specifically used the words "the same
>> > as."
>> 
>> Sorry, but the phrase "the same as" can be interpreted in several
>> ways.
>
> Perhaps.  But it does not imply "not substantially different."

But that's your own interpretation, based on your own assumptions, due
to the lack of information provided. Again, the OP needs to better
clarify his needs. The images in question are either:

(a) exact duplicate images where image content is literally the same

Note that file system metadata might be different, even if the image
content is exactly the same. If such image files are in the same
directory, for instance, the file names might differ. Also, as
previously discussed, depending on how the images were duplicated,
things like creation/modification dates may also differ, even if the
image content is exactly the same.

(b) distinct captures of a scene where the image content varies between
captures 

While such image content might vary slightly due to things like JPEG
compression, natural lighting, and other factors, the image content may
appear to be similar to the human eye, or may appear significantly
different to the human eye if something in the scene moved or changed.

Depending on which is the case, the solution needed can be substantially
different. And until the OP makes his needs clear, finding the right
solution will not be an efficient process for him.

-- 
E-mail sent to this address may be devoured by my ravenous SPAM filter.
I often ignore posts from Google. Use a real news client instead.

JR

[toc] | [prev] | [next] | [standalone]


#55441

FromDoug Anderson <ethelthelogremovethis@gmail.com>
Date2014-01-26 10:44 -0800
Message-ID<cxr47uvazy.fsf@ethel.the.log>
In reply to#55439
Jolly Roger <jollyroger@pobox.com> writes:

> On 2014-01-26, Doug Anderson <ethelthelogremovethis@gmail.com> wrote:
> > Jolly Roger <jollyroger@pobox.com> writes:
> >
> >> On 2014-01-26, Doug Anderson <ethelthelogremovethis@gmail.com> wrote:
> >> > Jolly Roger <jollyroger@pobox.com> writes:
> >> >
> >> > (snip)
> >> >
> >> >> The reason we are still talking about this is you have not
> >> >> sufficiently articulate what you want.
> >> >
> >> > But he has.. The reason we are still talking about it is that some
> >> > people jumped to the wrong conclusion about what he wanted, and
> >> > this being usenet, they won't let go no matter how clearly he
> >> > articulates it.
> >> >
> >> >> In your OP, you seem to imply that this network camera captures
> >> >> images of a scene at irregular intervals, and that you have a
> >> >> collection of those images that you want to process to eliminate
> >> >> captures of the scene that are not substantially different.
> >> >
> >> > No, he didn't imply that. He specifically used the words "the same
> >> > as."
> >> 
> >> Sorry, but the phrase "the same as" can be interpreted in several
> >> ways.
> >
> > Perhaps.  But it does not imply "not substantially different."
> 
> But that's your own interpretation, based on your own assumptions, due
> to the lack of information provided.

My interpretation of "the same as" is that it means "identical."

You can certainly interpret it some other way if you like.

But regardless of how you choose to interpret it, the phrase "the same
as" does not, in spite of your claim, "imply" something other than
identical.

[toc] | [prev] | [next] | [standalone]


#55447

FromJolly Roger <jollyroger@pobox.com>
Date2014-01-26 19:10 +0000
Message-ID<bkl4tiFf33uU2@mid.individual.net>
In reply to#55441
On 2014-01-26, Doug Anderson <ethelthelogremovethis@gmail.com> wrote:
> Jolly Roger <jollyroger@pobox.com> writes:
>
>> On 2014-01-26, Doug Anderson <ethelthelogremovethis@gmail.com> wrote:
>
> My interpretation of "the same as" is that it means "identical."

Ok.

> You can certainly interpret it some other way if you like.

I wasn't sure how to interpret it.

> But regardless of how you choose to interpret it, the phrase "the same
> as" does not, in spite of your claim, "imply" something other than
> identical.

It was more a question of *what* was "identical" (the files, or just the
image content).

Anyhow, turns out you were right. Good on you. : ) 

-- 
E-mail sent to this address may be devoured by my ravenous SPAM filter.
I often ignore posts from Google. Use a real news client instead.

JR

[toc] | [prev] | [next] | [standalone]


Page 5 of 8 — ← Prev page 1 2 3 4 [5] 6 7 8  Next page →

Back to top | Article view | comp.sys.mac.system


csiph-web