Patent ID: 7817853
Filing Date: 2010-10-19
Classification: G06T,H04N

Abstract:
1. An image converting apparatus comprising: a parameter setting unit which sets parameters for converting chromaticity coordinate values of each pixel of an input image into conversion chromaticity coordinate values; a chromaticity coordinate converting unit which obtains conversion chromaticity coordinate values by converting each of said pixels on the basis of the parameters set by said parameter setting unit; a color region obtaining unit which normalizes the conversion chromaticity coordinate values and obtains a color region including 2-dimensional conversion chromaticity coordinate values of the normalized conversion chromaticity coordinate values by projecting each of said normalized conversion chromaticity coordinate values onto a unit plane so that an additive color mixture can be performed; a barycenter calculation processing unit which calculates a barycenter of said color region with respect to the parameters and obtains parameter values at the time when each coordinate of the calculated barycenter differs from a value of ⅓ by less than a predetermined threshold; and an image converting unit which converts said input image on the basis of the obtained parameter values.