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

[Michael Sweet <msweet@msweet.org>]

Till,

> On Feb 17, 2025, at 1:30 PM, Till Kamppeter <till.kamppeter@gmail.com> 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.

> ...
>> The libcups project includes the ipptransform tool, which can generate PDF, PWG Raster, Apple Raster, and PCL content at different resolutions from PNG, JPEG, PDF, and text input, and I can certainly revive that sample file script.
> 
> Could you please do so?

OK, I'll set something up as a starting point...

> ...
> 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...

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Michael Sweet