Patent ID: 7508550
Filing Date: 2009-03-24
Classification: H04N

Abstract:
1. A look-up table creating apparatus comprising: representative luminance value calculation means for calculating a plurality of representative luminance values spaced apart from one another in a particular image included in an image represented by fed image data; corrected luminance value setting/calculation means for setting or calculating a plurality of corrected luminance values respectively corresponding to the plurality of representative luminance values that are calculated by the representative luminance value calculation means; interpolation means for calculating, on the basis of respective correspondences between the plurality of representative luminance values that are calculated by the representative luminance value calculation means and the plurality of corrected luminance values that are set or calculated by the corrected luminance value setting/calculation means, each of corrected luminance values corresponding to luminance values other than the plurality of representative luminance values by such interpolation that in a case where respective correspondences between the representative luminance values and the luminance values other than the representative luminance values and the corrected luminance values corresponding to the luminance values are expressed by a curve, the curve is smooth; and look-up table creation means for creating a look-up table on the basis of the plurality of corrected luminance values respectively corresponding to the plurality of representative luminance values that are set or calculated by the corrected luminance value setting/calculation means and the corrected luminance values respectively corresponding to the luminance values other than the plurality of representative luminance values that are calculated by the interpolation means.