Patent ID: 8294791
Filing Date: 2012-10-23
Classification: H04N

Abstract:
1. An image correction apparatus for correcting an input image according to luminance, the image correction apparatus comprising: a setting unit configured to set a first number, and to set a second number corresponding to a remainder when a number of pixels of the input image in a direction is divided by the first number; a reduction unit configured to reduce the input image, for first areas corresponding to the first number of pixels, at a first reduction ratio corresponding to the first number, for second areas corresponding to the second number of pixels, at a second reduction ratio corresponding to the second number, to generate a reduced luminance image; an extraction unit configured to extract a low-frequency component image from the reduced luminance image; an enlargement unit configured to enlarge the extracted low-frequency component image, for each area, at an enlargement ratio corresponding to the area, to generate correction data according to a size of the input image; and a correction unit configured to correct the input image according to the correction data.