Patent 8659795 was granted and assigned to RICOH COMPANY,LTD. on February, 2014 by the United States Patent and Trademark Office.
An image processing apparatus for performing color tone conversion on a predetermined original image data using a predetermined color tone conversion parameter, includes 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 weighted values, which is determined such that the lower the degree to be changed by the color tone conversion is, the smaller the value becomes, on the original image data for each of a predetermined range.