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Related: opencv/opencv#27490, opencv/opencv#27491, opencv/opencv#27206

This PR adds data for testing of chromatic aberration calibration and correction.

It includes a calibration pattern made from many black discs arranged in a rectangle which is printed out on A3 paper, and a photo is taken with a camera with an open aperture. On the camera, I disabled all kinds of existing chromatic aberration corrections and denoising. My camera can only save in .cr2 or .jpg, so I converted the image to png and downsized it.

Also, this PR includes the sample calibration data which the calibration procedure should output when using the supplied photo as input.

@MykhailoTrushch MykhailoTrushch marked this pull request as ready for review July 17, 2025 22:03
@asmorkalov asmorkalov changed the title WIP: Chromatic Aberration Correction Data Chromatic Aberration Correction Data Nov 24, 2025
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