发明名称 |
Shading-compensation method and device in image processing |
摘要 |
In an image processing system in which shading-compensation for eliminating shading-distortion contained inevitably in image light directed to an image sensor via optical systems is carried out, at least two latch unit for temporarily storing comparative values obtained by scanning white and black image planes are disposed between memory means for the comparative values and a processing unit for compensating image signals obtained as a result of optically scanning a given objective image. Since the comparative value of the pixel subsequent to a pixel in process is rendered on standby in one of the latch units in preparation for the image processing for the subsequent pixel, the processing time can be remarkably increased consequently to speed up the image processing.
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申请公布号 |
US5260809(A) |
申请公布日期 |
1993.11.09 |
申请号 |
US19910647208 |
申请日期 |
1991.01.28 |
申请人 |
NIPPON SEIMITSU KOGYO KABUSHIKI KAISHA |
发明人 |
TACHIKAWA, KYOUJI |
分类号 |
H04N1/401;(IPC1-7):H04N1/40 |
主分类号 |
H04N1/401 |
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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