Image processing method, image processing apparatus and recording medium

The image processing method as claimed in claim 2, wherein in said gradation processing method, one gradation process is performed for image data of a color component sensitive to a human being in said kinds of image data, and another gradation process different from said one gradation process is performed for image data of a color component less sensitive to a human being.

An image processing apparatus for obtaining an image by performing a gradation process for a plurality of kinds of image data, comprising:

• an image processing part performing the gradation process for each of said kinds of image data by selectively applying a gradation processing method from one of an error diffusion method and a blue noise mask method.

An image processing apparatus for obtaining an image by performing a gradation process for a plurality of kinds of image data, comprising:

• an image processing part performing one gradation process for image data of a color component sensitive to a human being in the kinds of the image data and another gradation process different from said gradation process for image data of a color component less sensitive to a human being.

A computer readable recording medium for storing a program, the program causing a computer to execute the steps of:

• performing one gradation process for image data of a color component sensitive to a human being in a plurality of kinds of image data;
• and
• performing another gradation process different from said one gradation process for image data of a color component less sensitive to a human being in the kinds of image data.