Feature request - Offer to load image using embedded ICC profile if present by default

[olavrb]

As a non-competent user I'd like to be able to open images in Paint.NET without colors looking funky by default.

 

Thus I'd like Paint.NET to use the embedded ICC profile by default, either by:

• Load using ICC profile by default, or
• Prompt user to load image with the embedded ICC profile Paint.NET automatically detected.

 

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Original title: "PDN messes up colors on XYB JPG created by JPEG XL "jpegli", Windows Photos doesn't"

Original content:

 

After reading about JPEG XL "jpegli" I had to test it.

 

Binaries can be found here:

• https://artifacts.lucaversari.it/libjxl/libjxl/latest/

Test image was taken from here:

• Web page containing multiple images: https://people.csail.mit.edu/ericchan/hdr/hdr-jxl.php
• Image in question: https://people.csail.mit.edu/ericchan/hdr/jxl_images/20140606_102418_IMGP0297.jxl

Which I decoded to PNG using GIMP (opened in GIMP, chose to export to PNG).

 

I then used following command to generate XYB JPG:

cjpegli.exe .\in.png .\out-xyb.jpg --quality=90 --xyb --chroma_subsampling=444

And following for a non-XYB JPG:

cjpegli.exe .\in.png .\out.jpg --quality=90 --chroma_subsampling=444

 

I then noticed that opening the XYB JPG file in Paint.NET messes up colors, while the Windows Photos app seems to handle it well.

I don't know enough to tell what causes this. Color space? ICC? But if the Windows Photos app handles it, so should Paint.NET, ideally.

 

Sample files (in.png, out.jpg, out-xyb.jpg) can be downloaded here (around 20MB):

• https://mega.nz/file/asAhyRqS#4iIzU4OoKc3SFzRB4h5018NOYfS5LKYfT9rPdbSxfIM

Edited October 21, 2023 by olavrb

[olavrb]

I found here:

That you can do Image -> Apply Embedded Color Profile, which makes the image look correct.

 

So maybe not a bug/something that needs to be fixed after all.

 

Maybe one could prompt the user to load the image with the color profile if a color profile is detected?

[Rick Brewster]

On 10/21/2023 at 7:23 AM, olavrb said:

Maybe one could prompt the user to load the image with the color profile if a color profile is detected?

The color profile is always loaded and preserved. You can convert the image to sRGB via the profile by using Image->Apply just like you already found.

 

I'm planning color management support for a future release. No need to request anything, it's in the queue.

[Rick Brewster]

On 10/22/2023 at 9:17 AM, Rick Brewster said:

I'm planning color management support for a future release.

btw this future release is 5.1, and I'm hoping to push out a public alpha in the next few weeks, so be sure to try it out!