Patent ID: 8659795

Claim:
An image processing apparatus for performing color tone conversion on a predetermined original image data using a predetermined color tone conversion parameter which is adjusted such that color tones of an output result obtained by outputting the original image data after being performed with the color tone conversion parameter by a target image output unit reproduces color tones of a reference output result, comprising: a converting degree parameter obtaining unit that obtains a converting degree parameter expressing a degree to be changed by the color tone conversion for each of a predetermined range of the original image data based on at least one of the original image data, reference image data obtained from the reference output result and target image data obtained from a target output result which is obtained by outputting the original image data by the target image output apparatus; a weighted value determination unit that determines weighted values for each of the predetermined range such that the lower the degree to be changed by the color tone conversion is, the smaller the value becomes, based on the converting degree parameter obtained by the converting degree parameter obtaining unit; and a converted image data generating unit that generates weight-applied converted original image data obtained by performing the color tone conversion by the color tone conversion parameter while applying the weighted values, on the original image data for each of the predetermined range.