发明名称 |
Reduction of noise generated by a digital picture coder/decoder which operates in blocks |
摘要 |
<p>A picture signal processing method and apparatus in which the block distortion or the mosquito noise generated on picture compression/expansion using block encoding or the like is removed and picture quality correction such as contour enhancement is carried out effectively. Compression-encoded picture signals are expanded and decoded by a MPEG decoder 106 and the decoded picture signals are sent to a noise reducing circuit 107. The noise reducing circuit 107 reduces the noise by block distortion reduction or by field recursive type noise reduction. The resulting noise-reduced or noise-freed picture signals are sent to a picture quality correction circuit 108, which then performs picture quality correction, such as contour enhancement. <IMAGE></p> |
申请公布号 |
EP0859518(B1) |
申请公布日期 |
2004.05.12 |
申请号 |
EP19980300812 |
申请日期 |
1998.02.04 |
申请人 |
SONY CORPORATION |
发明人 |
KOBAYASHI, HIROSHI;FUKUDA, KYOKO |
分类号 |
H04N5/208;G06T5/00;H03M7/30;H04N5/21;H04N5/93;H04N9/64;H04N19/124;H04N19/136;H04N19/14;H04N19/167;H04N19/176;H04N19/196;H04N19/423;H04N19/587;H04N19/59;H04N19/60;H04N19/625;H04N19/80;H04N19/85;H04N19/86;(IPC1-7):H04N7/30 |
主分类号 |
H04N5/208 |
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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