发明名称 |
Image coding apparatus and method, and program and recording medium |
摘要 |
An bit-plane coding pass generator is provided in which for SP-pass processing quantization coefficient of each code block divided into bit planes, "significant (S)" or "non-significant (N)" data in a predetermined area and those around the area and compared with an S/N matching pattern. The S/N matching pattern has been set when a jump can be made from an arbitrary sample point to a next sample point to be processed by SP pass. The jump is made to the next sample point to be processed by SP pass according to a jump address value obtained from a pattern coincident with a current S/N matching pattern. Thus, by reducing the time for the significant propagation (SP) pass defined in JPEG-2000, a code block can be coded at a higher speed by three coding passes.
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申请公布号 |
US7224846(B2) |
申请公布日期 |
2007.05.29 |
申请号 |
US20030625520 |
申请日期 |
2003.07.24 |
申请人 |
SONY CORPORATION |
发明人 |
FUJISHIRO SHIGEO;KITAMURA TAKUYA |
分类号 |
G06K9/36;H04N7/30;H03M7/30;H03M7/40;H04N1/41;H05K3/30;H05K3/32;H05K3/36 |
主分类号 |
G06K9/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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