Color image pickup apparatus having random color coding array
A color image pickup device including: a pixel group placed in an array of a plurality of pixels of photoelectric conversion elements; and a color coding array corresponding to the pixel group, the color coding array arranged in a randomized array, or arranged in a randomized array satisfying predetermined array restricting conditions, or arranged in a randomized array satisfying predetermined color distributing conditions. Thereby an object image can be picked up in accordance with a randomized color coding array having no regularity, making it possible without using an optical low-pass filter to achieve a color image pickup device and color image pickup apparatus using the color image pickup device capable of keeping color moire from occurring even of an object having a cyclic luminance change.
1. A single sensor color image pickup apparatus for picking up a color image, comprising:
a color image pickup device having a pixel group placed in an array of a plurality of pixels of photoelectric conversion elements and a color coding array corresponding to the pixel group, arranged in a randomized array and satisfying predetermined minimum color density conditions set for pixel number ratios between respective colors of color coding;
the color coding array arranged in the randomized array directly picks up the color image;
storage means for storing array data concerning the color coding array and pixel defect data of the color image pickup device; and
color separation means for generating color signals in accordance with the color coding array data stored in the storage means, wherein said color separation means performing a predetermined pixel defect correction in the color signal generating process based on the pixel defect data stored in said storage means.
2. The single sensor color image pickup apparatus according to claim 1 , wherein said color coding array comprises a color filter.
3. The single sensor color image pickup apparatus according to claim 1 , wherein the predetermined pixel defect correction processing by said color separation means comprises processing where an output signal of a fault pixel is supplemented by using an output signal of the pixel nearest to the fault pixel among the pixels of the same color as the color of signal to be supplemented for the fault pixel.
4. The single sensor color image pickup apparatus according to claim 3 , wherein said storage means comprises EEPROM.
5. The single sensor color image pickup apparatus according to claim 1 , wherein said storage means comprises EEPROM.