Patent ID: 6788342
Filing Date: 2004-09-07
Classification: H04N

Abstract:
A color video camera to obtain color images, comprising:a spectral optical system which decomposes the incident ray into N (wherein N is an integer greater than or equal to two) kinds of light; N pieces of image sensors composed of photoelectric transducers arranged on a two-dimensional plane being optically staggered to each other; first low-pass filters wherein N kinds of signals generated by adjusting the gain of the outputs of the image sensors are supplied as the input to obtain N kinds of outputs from the 1st through Nth; means for calculating a first signal wherein the output signal of the Kth (1&lE;K&lE;N) pixel of interest plus a constant value is multiplied by the ratio of the first low-pass filter output of the synthesized signal of the pixels of the respective kinds of pixels at the coordinates of the pixel of interest plus the constant value to the Kth first low-pass filter output at the coordinates of the pixel of interest plus the constant value, and the constant value is subtracted from the result of the multiplication and division, thereby to obtain the first signal; a band-pass filter wherein the calculated first signal is supplied as the input to obtain a second signal for aperture correction; a second low-pass filter wherein the synthesized signal of N kinds of signals generated by adjusting the gain of the image sensor outputs is supplied as the input to obtain a third signal; and means for obtaining a luminance signal component by synthesizing the second signal and the third signal.