Improved method for decompressing jpeg files using a...

Details Improved method for decompressing jpeg files using a... Improved method for decompressing jpeg files using a...

H - Electricity

04

N

H04N 7/50 (2006.01) G06T 9/00 (2006.01) H03M 7/30 (2006.01) H04N 7/26 (2006.01) H04N 7/30 (2006.01)

Patent

CA 2327063

A method for decompressing digital image data to improve the speed of decompression is disclosed. More specifically, the present invention improves image decompression time by operating upon a subset of the original data and by performing a modified discrete cosine transform on a subset of the originally provided data. The subset is determined by examining the compressed data and looking for a particular pattern of zero values and/or an "end of block" statement.

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