Image processing apparatus and image processing method, image processing program

Abstract

A from the color mosaic image obtained using a single-plate image pickup device in generating a color image, while reducing the processing load, to produce high quality color images. A from the color mosaic image of a low frequency band GRL, GBL, RL, low frequency image generation unit 11 for generating a BL signal, the middle frequency band GrM, frequency image generation unit 12 in generating an GbM signal, seeking BL and the first low-frequency color difference signal generating means 14 for generating color difference UL and second color difference VL from each of RL by subtracting the average value of the GRL and GbL, BL, GrL, GbL, the sum of the RL by synthesizing the frequency luminance signal generating means 16, YL and YM in generating the middle frequency luminance signal YM by the sum of the low-frequency luminance signal generating means 15, GrM and GbM for generating a luminance signal YL, the luminance signal Y by using the luminance synthesizing unit 18, Y and UL and VL to be generated, and a color space conversion unit 19, such as to generate color information for each pixel. .FIELD 1