Fortune Telling Collection - Ziwei fortune-telling - Is LZ77 and LZW coding the same thing?
Is LZ77 and LZW coding the same thing?
No, but they are related.
The algorithm published by Ziff and Lempel in 1977 was later called LZ77 algorithm.
In 1978, they published a sequel called LZ78 Compression Algorithm.
1984, Welch studied the variant of LZ78 algorithm. Because it was developed by W after Z and L, it was called LZW algorithm.
LZW applied for a patent, but the patent expired in 2003.
Almost all compression algorithms are developed by LZ77.
The so-called LZ77 coding and LZW coding are new codes produced by compressing the original character sequence with their own compression algorithms.
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