An image pickup system has an image sensor including a plurality of photodetectors arranged in two dimensions and an optical system having a lens for forming an image on the image sensor so that the image sensor produces picture data. A vibrator is provided for vibrating the image on the image sensor so as to oscillate the picture data, and a scanner is provided to be operative in synchronism with the vibration of the image for changing the oscillated picture data to data for a fixed image. A memory is provided for storing the data for a fixed image and a majority logic circuit is provided for selecting the most reliable data from the data stored in the memory and for producing a picture data for the image on the image sensor.
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