发明名称 |
Method and apparatus for linearly filtering two-dimensional signals |
摘要 |
A method of linearly filtering spatially two-dimensional signals. The signal to be filtered is applied to an electronic imaging system. For providing a scanning movement, the signal is deflected in the electronic imaging system and swept over at least one mask in which a desired corrective filter function is established in the form of a specific transmission characteristic. The light passed by the mask is detected by means of at least one photodetector placed behind the mask. The output signal of the photodetector is a representation of the filtered two-dimensional signal as a function of the time.
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申请公布号 |
US4097898(A) |
申请公布日期 |
1978.06.27 |
申请号 |
US19760755790 |
申请日期 |
1976.12.30 |
申请人 |
N. V. OPTISCHE INDUSTRIE "DE OUDE DELFT"NL197601087600155 |
发明人 |
GELUK, RONALD JAN |
分类号 |
H04N5/68;G02B6/04;G02B26/10;G02B27/46;G02B27/58;G06E3/00;G06K9/74;H04N5/72;(IPC1-7):H04N5/21 |
主分类号 |
H04N5/68 |
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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