Path: csiph.com!usenet.pasdenom.info!weretis.net!feeder1.news.weretis.net!news.swapon.de!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail
From: Jolly Roger <jollyroger@pobox.com>
Newsgroups: comp.sys.mac.system
Subject: Re: Any quick, easy way to compare two images?
Date: 26 Jan 2014 23:35:03 GMT
Organization: People for the Ethical Treatment of Pirates
Lines: 24
Message-ID: <bklkd7Fib1cU2@mid.individual.net>
References: <lbrnpr$q5o$1@dont-email.me> <xwlhy6jn6u.fsf@ethel.the.log> <2ridndio-M0kOnzPnZ2dnUVZ8kmdnZ2d@giganews.com> <2fd2jijlbb.fsf@ethel.the.log> <Lcudnbvj4oa5JXzPnZ2dnUVZ8oOdnZ2d@giganews.com> <161tzyjibp.fsf@ethel.the.log> <5cKdnS2-vfr0cX_PnZ2dnUVZ_oSdnZ2d@giganews.com> <ecfvocdh8s.fsf@ethel.the.log> <r_WdnVO3yP2VQn7PnZ2dnUVZ_uydnZ2d@giganews.com> <6jy523synp.fsf@ethel.the.log> <250120141345247892%nospam@nospam.invalid> <vey523eopt.fsf@ethel.the.log> <250120141630000472%nospam@nospam.invalid> <yxmwijeogq.fsf@ethel.the.log> <2014012515592033890-savageduck1@REMOVESPAMmecom> <lc1opr$h1d$2@dont-email.me> <2014012517510124273-savageduck1@REMOVESPAMmecom> <lc2hj5$loj$2@dont-email.me> <bkkopbFccv0U3@mid.individual.net> <lc3ka4$ft8$1@dont-email.me> <2014012613303278552-savageduck1@REMOVESPAMmecom> <lc44d1$v66$1@dont-email.me>
X-Trace: individual.net 6A1SAhsNOHQHNu7ZZ/mP6g7ugFRuPy5nTbraYeQHWztbCTY3q3
Cancel-Lock: sha1:r6BUU8HTaWRJ5UOgsnaSKy7HuvA=
X-Face: _.g>n!a$f3/H3jA]>9pN55*5<`}Tud57>1<n@LQ!aZ7vLO_nWbK~@T'XIS0,oAJcU.qLM dk/j8Udo?O"o9B9Jyx+ez2:B<nx(k3EdHnTvB]'eoVaR495,Rv~/vPa[e^JI+^h5Zk*i`Q;ezqDW< ZFs6kmAJWZjOH\8[$$7jm,Ogw3C_%QM'|H6nygNGhhl+@}n30Nz(^vWo@h>Y%b|b-Y~()~\t,LZ3e up1/bO{=-)
User-Agent: slrn/1.0.1 (Darwin)
Xref: csiph.com comp.sys.mac.system:55461

On 2014-01-26, Don Bruder <dakidd@sonic.net> wrote:
>
[destructive rant snipped]
>
> As explained elsewhere (in multiple ways, on multiple occasions, but 
> still somehow eluding DAMN NEAR EVERYBODY despite my efforts to be so 
> clear that no misunderstanding could be possible) my program is 
> snatching images from a webcam (AKA "pushing the button on the magic 
> box" of the analogy, AKA the original "assemble a stream of webcam 
> images" in my first post) that *NOMINALLY* updates the image on a 
> website every 60 seconds.

So rather than pulling images directly from a network camera, you are,
in fact, pulling images from a web site indiscriminately? That's quite a
different use case, as I see it. In that case, examining the
"Last-Modified" HTTP header will tell you if the image is in fact new,
which would allow you to refrain from pulling the same image more than
once.

-- 
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