Patent ID: 7412092

Claim:
An image processing apparatus for generating a color image on the basis of a mosaic image captured by a single-plate color imaging device, each pixel of which has a plurality of color components, the single-plate color imaging device incorporating a color filter in which first color components are arranged every other line horizontally and vertically and second color components are arranged every other line horizontally and vertically and are arranged in horizontal and vertical lines differing from those of said first color components, said image processing apparatus comprising: change intensity computation means for computing a change intensity in the horizontal direction and a change intensity in the vertical direction in a pixel of interest on the basis of the pixel of interest of said mosaic image and pixels that are vertically and horizontally adjacent to said pixel of interest; first estimation value computation means for computing a first estimation value pixel of interest of said first color components on the basis of said pixel of interest and pixels that are vertically adjacent to said pixel of interest and for computing a second estimation value in said pixel of interest of said second color components on the basis of said pixel of interest and pixels that are horizontally adjacent to said pixel interest; and second estimation value computation means for computing a third estimation value in said pixel of interest of third color components composed of said first color components and said second color components on the basis of said change intensity in the vertical direction, said change intensity in the horizontal direction, said first estimation value, and said second estimation value.