On Thu, May 5, 2011 at 12:48 PM, Paul Hartman
> On Wed, May 4, 2011 at 6:06 PM, Sebastian Pipping <firstname.lastname@example.org> wrote:
>> I stumbled upon the article
>> *Gamma error in picture scaling
>> recently. *I was actually pointed to it be some tool applying the proper
>> algortihm. *I think it was command line.
>> Especially as I don't trust ImageMagick with files that matter I would
>> love to find (or re-find) a command line tool that properly handles
>> Gamma when resizing images. *Needs be free software. *Anyone?
> ImageMagick works. I downloaded the Dalai Lama photo from that page
> and converted it by doing:
> convert -colorspace sRGB gamma_dalai_lama_gray.jpg -scale 50%% -set
> colorspace sRGB gamma_dalai_lama_gray50.png
> And the resulting image is correct.
I will add the disclaimer that it *appears* correct to me. It is not a
solid grey image like the "bad" examples on that page. I don't fully
understand what that page is talking about and most of it was a
whooosh over my head.