Re: Free-/Open-Source-licensed JPG, JPG-XL, PNG, TIFF, PDF, PostScript files for print filter and OCR CI testing

On 2/17/25 22:22, Michael Sweet wrote:
> Till,
> 
>> On Feb 17, 2025, at 1:30 PM, Till Kamppeter <[email protected]> wrote:
>>> ...
>>> to the IEEE-ISTO and the Printer Working Group, a program of the IEEE-ISTO.
>>
>> Is this a well-known free software/document license? And if yes, which one?
> 
> I don't think it is a well-known "license", however the terms match the Creative Commons Attribution-NoDerivatives 4.0 International (CC BY-ND 4.0) license.
> 

OK, thanks. Should be good enough for sample content, but I will also ask my 
colleagues.

>> ...
>> As JPEX-XL is a format which I am newly adding to the filters, how and where could I obtain free sample images for that format?
> 
> I suspect you'll need to generate them.  I think ImageMagick supports conversion to the format, so that might be a way towards that goal.  The libjxl project also includes a cjxl utility that can convert PNG files to JXL, and libjxl also provides a Gimp plugin...
> 

OK, so we will take some high-color-depth PNG or so to turn it into JXL ...

Thank you very much.

    Till