发明名称 |
Bildkomprimierung und -dekomprimierung mittels orthogonaler Musterfunktionen |
摘要 |
<p>A multiplication means (51) memorizes a series of optical density figures representing a series of orthogonal function patterns and performs optical multiplications upon an original picture in comparison with each of the orthogonal function patterns. A summation means (52) determines the expansion coefficients of the orthogonal functions for the whole original picture from the operation results obtained by the multiplication means (51). A quantizing and encoding means (53) quantizes and encodes the orthogonal function expanding coefficients obtained by the summation means (52) for compressing the data. The encoded data is transmitted to a picture restoring section which has the same optical system as the picture compressing section. This enables the system to conduct two-way picture encoding and restoring. <IMAGE></p> |
申请公布号 |
DE69325619(D1) |
申请公布日期 |
1999.08.19 |
申请号 |
DE1993625619 |
申请日期 |
1993.05.18 |
申请人 |
SHARP K.K. |
发明人 |
NAKAJIMA, TAKAYUKI;CHIBA, SHIGERU;SATO, SHUN-ICHI;SUWA, AKIO |
分类号 |
G02F3/00;G02B27/46;G06E1/02;G06T9/00;H03M1/00;H04N1/41;H04N7/14;H04N19/42;H04N19/436;H04N19/60;H04N19/625;H04N19/85;H04N19/86;H04N19/91;H04N21/647;(IPC1-7):H04N7/30;G02F1/00;G06E1/00;G06E1/04 |
主分类号 |
G02F3/00 |
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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