Patent ID: 8330838
Filing Date: 2012-12-11
Classification: H04N

Abstract:
1. A shading correcting device comprising: a correction-coefficient output unit that outputs a correction coefficient for performing a color shading correction on an image signal, which is set on a predetermined position on an image area displayed on a screen and corresponds to each position, as a color shading correction coefficient for each position; and a correction-coefficient interpolation unit that calculates a color shading correction coefficient used for the color shading correction at a position of a pixel at which the color shading correction coefficient is not set among pixels in the image signal by an interpolation process using the color shading correction coefficient from the correction-coefficient output unit, wherein the color shading correction coefficient output from the correction-coefficient output unit is a color shading correction coefficient that is for a first color as a target for the color shading correction and a ratio between a coloration state of the first color and a coloration state of a second color, which is adjacent to a pixel of the first color, as a non-target for the color shading correction, when an image signal of the first color is output, the correction-coefficient interpolation unit outputs the image signal of the first color by performing the color shading correction on the image signal of the first color based on the color shading correction coefficient calculated by the interpolation process and a pixel value of the second color, and when an image signal for the second color is output, the correction-coefficient output unit outputs the image signal of the second color without performing the color shading correction on the second color.