| 摘要 |
In a solid-state image pickup device using a CCD solid-state image pickup device, a vertical smear is reduced so as not to be influenced by a dark current such as a white blemish of the CCD solid-state image pickup device. A dark current variation in the vertical direction of a display screen of signals which are read out before effective pixels of a photosensitive surface of the solid-state image pickup device and obtained from a vertical light-shielded image is corrected. A vertical smear correction signal is calculated from each vertical pixel signal of the vertical light-shielded image and subtracted from image signals which are outputted from the effective pixels of the photosensitive surface. A represent-value signal is calculated from the signals outputted from the solid-state image pickup device and subtracted from the image signals outputted from the effective pixels of the photosensitive surface.
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