Re: alternative views of PNG (was Re: Buster => Bullseye: packages keptback)

From	gene heskett <gheskett@shentel.net>
Newsgroups	linux.debian.user
Subject	Re: alternative views of PNG (was Re: Buster => Bullseye: packages keptback)
Date	2023-03-28 17:40 +0200
Message-ID	<GejAt-fHDj-5@gated-at.bofh.it> (permalink)
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On 3/28/23 06:53, davidson wrote:
> On Mon, 27 Mar 2023 gene heskett wrote:
>> On 3/27/23 09:18, Nicolas George wrote:
>>> Dan Ritter (12023-03-27):
>>>> changing 33 to 30 will get you black. ANSI color escapes are on
>>>> the web in many places.
>>>
>>> Also, decent terminal emulators let users tweak the colors, and making
>>> sure all main colors are readable on the default background would
>>> probably be a good use of that ability.
>>>
>>> Regards,
>>>
>> This is a sore point with something I'm fighting with. Chinese 
>> electronics makers are in the habit of publishing .pngs of their 
>> products, with the most valuable info one needs to properly hook it 
>> up, in a putrid yellow on a white background.
>>
>> Would it be practical to put a filter in the path cups put things 
>> headed to a printer thru, to change just that esc sequence to make 
>> those boxes and their text content into something more readable.
>>
>> For an example of such an unhelpful document, find a copy of 
>> "MKS-Robin-Nano-V3.X-main.zip", unpack it, cd to Image-V3, and look at 
>> "MKS_Robin_Nano_V3_PIN.png" on-screen or better yet print it.
> 
> Like this?
> 
>   https://raw.githubusercontent.com/makerbase-mks/MKS-Robin-Nano-V3.X/main/hardware/Image-V3/MKS_Robin_Nano_V3_PIN.png
> 
> I can't help you with the printing.
> 
> I use xli to view images. I like it primarily because it requires no mouse.
> 
> It also has a lot of command line options that I don't understand, but
> they are fun to play with.
> 
>   $ xli MKS_Robin_Nano_V3_PIN.png # I see what Gene complains about
> 
>   $ xli -gamma 7 MKS_Robin_Nano_V3_PIN.png # Colors appear much darker
> 
>   $ xli -gray  MKS_Robin_Nano_V3_PIN.png # Yellow is now gray. Lighter 
> content is too light
> 
>   $ xli -gray -gamma 5  MKS_Robin_Nano_V3_PIN.png # Yellow is still 
> gray. But\
>                                                     Lighter content is 
> more legible
> 
>   $ xli -colors 2 MKS_Robin_Nano_V3_PIN.png # Only ONE shade of gray 
> (obscures some info)

xli -gamma 5  MKS_Robin_Nano_V3_PIN.png shows me a much more readable 
image, how do I make it save that version? Can it pipe to a new, 
modified file?

Thanks.

Cheers, Gene Heskett.
-- 
"There are four boxes to be used in defense of liberty:
  soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
  - Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/>

Thread

Buster => Bullseye: packages kept back Jesper Dybdal <jd-debian-user@dybdal.dk> - 2023-03-26 11:20 +0200
  Re: Buster => Bullseye: packages kept back Jeffrey Walton <noloader@gmail.com> - 2023-03-26 11:30 +0200
  Re: Buster => Bullseye: packages kept back davidson <davidson@freevolt.org> - 2023-03-26 13:20 +0200
    Re: Buster => Bullseye: packages kept back Jesper Dybdal <jd-debian-user@dybdal.dk> - 2023-03-26 15:00 +0200
      Re: Buster => Bullseye: packages kept back davidson <davidson@freevolt.org> - 2023-03-27 11:10 +0200
        Re: Buster => Bullseye: packages kept back Jesper Dybdal <jd-debian-user@dybdal.dk> - 2023-03-27 11:30 +0200
          Re: Buster => Bullseye: packages kept back David Wright <deblis@lionunicorn.co.uk> - 2023-03-27 16:50 +0200
          Re: Buster => Bullseye: packages kept back davidson <davidson@freevolt.org> - 2023-03-28 11:00 +0200
            Re: Buster => Bullseye: packages kept back Jesper Dybdal <jd-debian-user@dybdal.dk> - 2023-03-28 12:30 +0200
        Re: Buster => Bullseye: packages kept back Jesper Dybdal <jd-debian-user@dybdal.dk> - 2023-03-27 16:50 +0200
  Re: Buster => Bullseye: packages kept back Cindy Sue Causey <butterflybytes@gmail.com> - 2023-03-26 17:40 +0200
    Re: Buster => Bullseye: packages kept back Jesper Dybdal <jd-debian-user@dybdal.dk> - 2023-03-26 19:30 +0200
  Re: Buster => Bullseye: packages kept back David Wright <deblis@lionunicorn.co.uk> - 2023-03-26 20:20 +0200
    Re: Buster => Bullseye: packages kept back Jesper Dybdal <jd-debian-user@dybdal.dk> - 2023-03-27 00:30 +0200
  Re: Buster => Bullseye: packages kept back Jeffrey Walton <noloader@gmail.com> - 2023-03-26 23:20 +0200
    Re: Buster => Bullseye: packages kept back Jesper Dybdal <jd-debian-user@dybdal.dk> - 2023-03-27 00:30 +0200
      Re: Buster => Bullseye: packages kept back Vincent Lefevre <vincent@vinc17.net> - 2023-03-27 13:30 +0200
        Re: Buster => Bullseye: packages kept back Greg Wooledge <greg@wooledge.org> - 2023-03-27 13:50 +0200
          Re: Buster => Bullseye: packages kept back Vincent Lefevre <vincent@vinc17.net> - 2023-03-27 14:20 +0200
            Re: Buster => Bullseye: packages kept back Greg Wooledge <greg@wooledge.org> - 2023-03-27 14:30 +0200
          Re: Buster => Bullseye: packages kept back Dan Ritter <dsr@randomstring.org> - 2023-03-27 15:10 +0200
            Re: Buster => Bullseye: packages kept back Nicolas George <george@nsup.org> - 2023-03-27 15:20 +0200
              Re: Buster => Bullseye: packages kept back gene heskett <gheskett@shentel.net> - 2023-03-27 16:10 +0200
                Re: Buster => Bullseye: packages kept back <tomas@tuxteam.de> - 2023-03-27 17:40 +0200
                Re: Buster => Bullseye: packages kept back gene heskett <gheskett@shentel.net> - 2023-03-27 20:10 +0200
                Re: Buster => Bullseye: packages kept back <tomas@tuxteam.de> - 2023-03-28 07:10 +0200
                Re: Buster => Bullseye: packages kept back gene heskett <gheskett@shentel.net> - 2023-03-28 17:10 +0200
                alternative views of PNG (was Re: Buster => Bullseye: packages kept  back) davidson <davidson@freevolt.org> - 2023-03-28 13:00 +0200
                Re: alternative views of PNG (was Re: Buster => Bullseye: packages  keptback) gene heskett <gheskett@shentel.net> - 2023-03-28 17:40 +0200
                Re: alternative views of PNG (was Re: Buster => Bullseye: packages  keptback) gene heskett <gheskett@shentel.net> - 2023-03-28 18:50 +0200
                Re: alternative views of PNG (was Re: Buster => Bullseye: packages  keptback) <tomas@tuxteam.de> - 2023-03-28 20:00 +0200
                Re: alternative views of PNG (was Re: Buster => Bullseye: packages  keptback) <tomas@tuxteam.de> - 2023-03-28 20:00 +0200
                Re: alternative views of PNG (was Re: Buster => Bullseye: packages  keptback) davidson <davidson@freevolt.org> - 2023-03-29 09:30 +0200
              Re: Buster => Bullseye: packages kept back Vincent Lefevre <vincent@vinc17.net> - 2023-04-03 13:50 +0200
            Re: Buster => Bullseye: packages kept back Greg Wooledge <greg@wooledge.org> - 2023-03-27 16:10 +0200
              Re: Buster => Bullseye: packages kept back davidson <davidson@freevolt.org> - 2023-03-28 08:30 +0200
                apt colored output (was Re: Buster => Bullseye: packages kept  back) davidson <davidson@freevolt.org> - 2023-04-03 08:00 +0200
      Re: Buster => Bullseye: packages kept back Anssi Saari <as@sci.fi> - 2023-03-28 11:30 +0200

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