in reply to Re: Windows screengrab with GD
in thread Windows screengrab with GD

Okay. I've tried the before image you posted and a bunch of other jpgs, pngs and gifs and I cannot reproduce the problem here.

The only possibility that comes to mind is that the original image was an 8-bit color image and the process of converting that, first to a 24-bpp MS bitmap, and then to 24-bpp PNG might have introduced some artifacts.

Unless the original image is available, in its original form, on the net somewhere, I cannot see any way to progress this?


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Re^3: Windows screengrab with GD
by Anonymous Monk on Dec 30, 2014 at 12:57 UTC
    Thank you!

    Well, I posted crop because I have exactly same issue with it as with full image (that's how I got second image from my sample). Also I download uploaded crop image before posting it here and compared it with my to make sure hosting site not altered it.

    So, if you can't reproduce that issue - you will not able to reproduce it with full one as well or with any other images I had. That helped me a lot. Looks like it's something with my Perl/GD or maybe Aero theme.

    Thank you very much and sorry for disturb. :)

    I temporary use workaround, by replacing Perl conversation with bmp2png tool. If I'll found reason for my issue, I'll post an update.

      or maybe Aero theme.

      That is a distinct possibility.

      In the end, there are so many layers of pre-interpretation of the image being done, before I get my hands on the post-interpreted bitmap; even if I knew exactly which layer was the cause of the problem, there'd be little I could do about it :(


      With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
      Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
      "Science is about questioning the status quo. Questioning authority".
      In the absence of evidence, opinion is indistinguishable from prejudice.