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sweyns

What does N represent here in the basis formula?

sushain

$N$ is the length/height of the block. So, for the Y' channel, $N=8$ and for the Cb and Cr channels, it's $16$.

cat

Should DCT be the abbreviation of "discrete cosine transform"?

cmate

this video helped me understand the concept better https://www.youtube.com/watch?v=Q2aEzeMDHMA

ehsan

I've read that the Wavelet transform is used in JPEG2000, how does that relate to the DCT method here?