Patent ID: 8130286
Filing Date: 2012-03-06
Classification: H04N

Abstract:
1. A luminance signal generation apparatus that generates a luminance signal for each pixel from an image signal read from an image sensor that includes a primary color Bayer pattern type of color filter array, the luminance signal generation apparatus comprising: a first signal generating unit configured to generate a first signal from a first image signal that was generated by limiting a spatial frequency bandwidth of the image signal; a second signal generating unit configured to generate a second signal from a second image signal that was generated by limiting the spatial frequency bandwidth of the image signal to a lower bandwidth than the first image signal; a computing unit configured to compute, from the image signal read from the image sensor, a color intensity measure for a pixel of interest, the measure indicating an intensity of a predetermined color of the pixel of interest; and a first adding unit configured to generate an output luminance signal for the pixel of interest using a third signal that was generated by adding the first signal and the second signal such that, based on the color intensity measure, the second signal is weighted more as the intensity of the predetermined color of the pixel of interest increases.