| 摘要 |
PROBLEM TO BE SOLVED: To perform high-speed lossy/lossless compression. SOLUTION: In an integrated circuit (IC) incorporating a printer compression/decompression function, during encoding, pixel data are input from a band buffer through a pixel data I/F 2801 to a wavelet transform block 2803, and converted to reversible wavelet, and highest importance data of a transform coefficient are applied to a context model 2805 for encoding. Lowest importance data of the transform coefficient are stored through a coefficient data I/F 2804 into the band buffer, then read out, given to the context model 2805, and encoded. COPYRIGHT: (C)2008,JPO&INPIT |
