发明名称 Shading correction device
摘要 A device for carrying out the shading correction of an image signal is provided. The present device includes an image sensor capable of scanning a reference density reflecting plate over a predetermined number of times along different scanning lines and averaging means for taking an average among the repeated scannings thereby forming an error-free reference data to be later used in the operation of shading correction.
申请公布号 US4523229(A) 申请公布日期 1985.06.11
申请号 US19820388679 申请日期 1982.06.15
申请人 RICOH COMPANY, LTD. 发明人 KANMOTO, YOSHIAKI
分类号 G03G15/04;G03G15/043;G03G15/047;G06T1/00;H04N1/401;(IPC1-7):H04N1/38 主分类号 G03G15/04
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