Patent ID: 8180172
Filing Date: 2012-05-15
Classification: G06T

Abstract:
1. An image processing method for correcting an original image, the method comprising: performing a retinex processing on a luminance signal of each pixel in an original image that is indicative of a luminance component of an original color of each pixel, the retinex processing comprising: determining, for each pixel, a retinex-processed pixel value based on the luminance signal that has been subjected to the retinex processing and at least one signal other than the luminance signal that is indicative of a component other than the luminance component of the original color of the each pixel; obtaining, for each pixel value, the luminance signal and the at least one other signal based on an original pixel value indicative of the original color of the each pixel; generating a histogram by counting a rate of occurrence of the retinex-processed pixel values for each level over a predetermined first range of pixel values having a maximum value and a minimum value to which the retinex-processed pixel value is possibly assigned; and reassigning each pixel value based on the histogram, the reassigning step comprising: