Support color images
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trstephen commented
Put the watermark in the chrominance instead of the luminance. We can jam more 💩 in there without hurting the PSNR. We could also be sneaky and have the code in Cb and the correction in Cr (instead of top left / bottom right as suggested in #3 )
houtan1 commented
This is a very intriguing concept, having the code in Cb and the correction in Cr. If we do choose to go down this road, we'd need to first have a DCT proof of concept with color images (vs the B/W we've worked with so far) and secondly decide if binary offsets (as in #3 ) is the better path to achieving our goal (the balance between error resilience and and low impact on quality)