What are the differences between Huffman coding and LZW coding? Specifically address the type of redundancy addressed by each method.
What are the differences between Huffman coding and LZW coding? Specifically address the type of redundancy addressed by each method.
Huffman Coding:
Huffman encoding is an algorithm that encodes data in a lossless manner. The method behind its scheme involves the sorting of numerical values according to their frequency from a collection.
The least frequent numbers are slowly discarded from the Huffman tree, which in each new "branch" removes the two lowest frequencies from the sorted list. The sum is then placed above the two removed lower frequency values, and replaces them in the new sorted list.
New branches are either made to the right, for higher values, or left, for the lower values. Upon depletion of the sorted list and completion of the tree, the final value is zero if the tree ends on a left number or if it ends on the right.
This is a method to reduce complex code to simpler sequences and is popular in encoding videos.
Huffman Coding is actively used to eliminate redundancies in coding. In this variable length is provided to the code. While smaller codes are assigned to frequently used symbols, larger codes are assigned to less frequently used symbols.
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