An Upper Limit of AC Huffman Code Length in JPEG Compression

Details An Upper Limit of AC Huffman Code Length in JPEG Compression An Upper Limit of AC Huffman Code Length in JPEG Compression

2009-01-19

arxiv.org/abs/0901.2954v1

Computer Science

Information Theory

US patent application 11/947936

Scientific paper

A strategy for computing upper code-length limits of AC Huffman codes for an 8x8 block in JPEG Baseline coding is developed. The method is based on a geometric interpretation of the DCT, and the calculated limits are as close as 14% to the maximum code-lengths. The proposed strategy can be adapted to other transform coding methods, e.g., MPEG 2 and 4 video compressions, to calculate close upper code length limits for the respective processing blocks.

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