Show HN: Discrete Fourier Transform on color eInk manga fixes rainbows [video]

by seam_carveron 2/9/2026, 4:05 PMwith 0 comments

An interesting application of the 2D DFT to manga on color eink Kaleido 3 with math theory explained! Kobo Colour images. Most of the slides are based on the DFT chapter in Digital Image Processing: A Practical Approach by Nick Efford. I learned DFT to understand this algorithm.

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