Preserve Jpeg color profile about caire

[esimov]

What do you mean by color space is not preserved? Could you explain? Even better would be if you could attach the source image and the resulted output.

[purplefish32]

The first one (in) is in Adobe RGB (1998) colour profile, the second one (out) becomes sRGB ICE61966-2.1

Notice the colours are also less vibrant.

This is the command I am using :

caire -in beach.jpg -width 1969 -out beach2.jpg -debug=1

So here are the two images :

[purplefish32]

Once uploaded to Github, both the in and out image seem to be more or less the same, I think the Github image preview is reincoding them or something,

You can try a download one and use caire on it to reproduce the issue

[purplefish32]

And sorry it is the colour profile that changes, not the colour space

[esimov]

I've done a little research, but unfortunately the image package does not preserve the color profile of the original image on encoding. There are other tools like exiftool where you can modify the color profile of an image or libvips which actually has a go binding also, but I'm not planning of integrating into Caire.

[purplefish32]

OK, thank you for taking the time to investigate