Using the 2D discrete Fourier transform to fix rainbows in manga on color eInk (opens in new tab)

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2 pointsseam_carver1mo ago2 comments

2 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.

Klaster_11mo ago

I love how blur and rainbow fix are basically different masks over FFT space. Such a miniscule difference but such a large impact.

j / k navigate · click thread line to collapse

2 comments

seam_carverOP1mo ago

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.

Klaster_11mo ago

I love how blur and rainbow fix are basically different masks over FFT space. Such a miniscule difference but such a large impact.

j / k navigate · click thread line to collapse