Why do I see lines or a grid-like pattern on my colour corrected image?

[SamimAB]

I have used this example (https://github.com/colour-science/colour-checker-detection/blob/master/colour_checker_detection/examples/examples_detection.ipynb) to color correct the above image. But I get these lines after applying color correction, if u zoom these are red , green, blue line. And they rotate if I rotate the original image before processing. I am very new to this any help is appreciated.

[SamimAB]

So I found the issue I was loading in RGBA image but the color matrices for swatches RGB , converting the image from RGBA to RGB solved it.

[KelSolaar]

Yes, as pointed out on Stack Overflow you can also do that: colour.io.read_image(path)[..., 0:3]