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Algorithms and Data Structures lecture 8 Loss data compression, cont d

2. Dictionary compression: LZ77 and LZ78 families. LZ77 idea: some sequences from the ?past" appear again, thus can be encoded succinctly. (Sequence) match encoding: pair (offset, length). Offset ? how far in the past (how many bytes back).. ...Harry Potter got a pl|otter.. . encoded text text to encode.

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Algorithms and Data Structures lecture 8 Loss data compression, cont d

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    1. Algorithms and Data Structures lecture 8 Loss data compression, cont’d

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