snibgo

fmw42 wrote: > If the gain map is pixel data (same size as input), then could it not be put into a meta channel? Ah, yes, thanks, I think that's...

Update on this: The supplied sample JPEG files with gainmaps are stored in JPEG MPF (Multi-Picture Format) files. (Similarly JPEGs with depth maps.) Exiftool can extract the multiple images, but...

I haven't checked the code, so this may be wrong, but I suspect IM is clutting all four channels (R, G, B and A). The first image has alpha=1 in...

This is the result I get from the current v6, ImageMagick-6.9.12-72-portable-Q16-HDRI. ``` convert 211222529-e1f9afe0-c579-40dd-8e00-93edbaed39de.png 211222531-4966be82-29c1-4f4c-b91c-c977328deb41.png -interpolate bilinear -clut x6.png ```  The result is fully opaque. It is identical to...

> I would have expected for the example C code above to generate an image with transparent pixels where the pixels are transparent in the clut/gradient image. Why would you...

I don't understand the comment in enhance.c for ClutImage(). I suspect it has been carried forwards from a old version of ImageMagick, and has not been updated to reflect the...

Viewing the zipped images from the OP the JPG, AVIF and TIFF look identical to me when using Microsoft Windows 11 "Photos", or IrfanView "XnView MP".

> are you using the Microsoft AV1 codec pack for the photo gallery as well ? I don't know. How can I find out? > do you see the green...

There is some confusion on this thread. `-colorspace` should be used with a keyword, not a filename. The keyword might be `Adobe98` or `sRGB` among others, but not `AdobeRGB`. Use...

You may be correct about sRGB primaries; I don't know. If you are correct, then to the question above from gianni-rosato ... > Is there any way to do this...