4 ms·
JPEG compression has multiple steps, only one of which is inherently lossy (quantization of DCT coefficients). The last step is Huffman coding of the coefficien
by pornel 4y ago
JPEG compression has multiple steps, only one of which is inherently lossy (quantization of DCT coefficients). The last step is Huffman coding of the coefficients, and this data can be losslessly rearranged and recompressed.