Patent ID: 7583420
Filing Date: 2009-09-01
Classification: H04N

Abstract:
1. An image processing method of generating a printer model used to convert device-dependent data into device-independent data, on the basis of colorimetric results of color patches output from an output device, and generating a conversion table used to convert the device-independent data into the device-dependent data, on the basis of the printer model, comprising the steps of: obtaining tone characteristics of the output device based on the density of a single color patch which is estimated using a device-independent colorimetric value corresponding to the single color patch in a CMYK-device-independent colorimetric value table obtained from the colorimetric results, and calculating a conversion condition used to convert the tone characteristics into linear characteristics; and generating the printer model used for generating the conversion table, on the basis of a CMYK value obtained by converting the tone characteristics into the linear characteristics and on the basis of the CMYK-device-independent colorimetric value table obtained from the colorimetric results used for obtaining the tone characteristics.