| 发明名称 |
IMAGE DATA PROCESSING DEVICE, IMAGE DATA PROCESSING METHOD, AND PROGRAM |
| 摘要 |
<p>Compression of image data with little visual deterioration is realized. Nonlinear compression and DPCM compression are serially carried out. A compressor (41) using nonlinear compression receives image data (one pixel is composed of L-bits) on each color component and compresses the image to M bits (M<L) according to an adequate compression conversion table (TB1) set according to image information extracted from the original image data. The compressor (41) carries out compression conversion of a characteristic similar to the gamma curve characteristic used for the gamma correction carried out at succeeding stage. The nonlinear compressor (41) inputs the image data compression-converted into M bits into a DPCM compressor (42). The DPCM compressor (42) finally compresses the image data into N bits (for example, N=10) by using a quantization table (TB2). The compressed image data is stored in an image memory (7) through a packing section (43).</p> |
| 申请公布号 |
WO2006134723(A1) |
申请公布日期 |
2006.12.21 |
| 申请号 |
WO2006JP308494 |
申请日期 |
2006.04.18 |
| 申请人 |
SONY CORPORATION;FUKUDA, KYOKO;YONEDA, YUTAKA;FUKUNAGA, MASATSUGU |
发明人 |
FUKUDA, KYOKO;YONEDA, YUTAKA;FUKUNAGA, MASATSUGU |
| 分类号 |
H04N5/20;H04N1/407;H04N1/41;H04N5/243;H04N5/907;H04N5/91;H04N5/92;H04N19/00;H04N19/126;H04N19/136;H04N19/137;H04N19/14;H04N19/189;H04N19/196;H04N19/593;H04N19/85;H04N19/91 |
主分类号 |
H04N5/20 |
| 代理机构 |
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