3 ms·
Huffman coding is not used directly by PNG. PNG instead uses the regular DEFLATE algorithm from Zip (and Gzip), which uses Huffman coding as its last stage, to
by user-the-name 6y ago
Huffman coding is not used directly by PNG. PNG instead uses the regular DEFLATE algorithm from Zip (and Gzip), which uses Huffman coding as its last stage, to output the symbols created by its LZ77-based compression algorithm.