Patent ID: 8849051
Filing Date: 2014-09-30
Classification: H04N

Abstract:
1. A method of decoding Huffman codes in a Joint Photographic Experts Group (JPEG) image file, comprising: obtaining a bitstream sample from a bitstream associated with said JPEG image file; comparing said bitstream sample against a threshold value in a base table, to obtain a Huffman group number; retrieving information, from said base table, associated with a Huffman group, using said Huffman group number; extracting a current Huffman symbol from said bitstream, using said Huffman group information; and obtaining a symbol value from a secondary table, using said current Huffman symbol and said Huffman group information, wherein said base table comprises a plurality of information associated with a plurality of Huffman groups, and said secondary table comprises a plurality of symbol values; and said base table and said secondary table are generated from Huffman table information included in said JPEG image file.