Image forming apparatus, image processing method, and recording medium

An image processing method for calibrating image correction conditions corresponding to each halftone process based on first and second halftone methods, said image processing method comprising the steps of:

• producing first image correction conditions corresponding to said first halftone method on the basis of pattern image signals which are obtained by reading a pattern image which is halftone-processed and output by said first halftone method;
• and
• producing second image correction conditions corresponding to said second halftone method from said first image correction conditions on the basis of the correlation between said first and second halftone methods.

A computer-readable recording medium for recording a program for executing an image processing method for calibrating image correction conditions corresponding to each halftone process based on first and second halftone methods, said program comprising:

• codes for producing first image correction conditions corresponding to said first halftone method on the basis of a pattern image signal obtained by reading a pattern image which is halftone-processed and output by said first halftone method;
• and
• codes for producing second image correction conditions corresponding to said second halftone method from said first image correction conditions on the basis of the correlation between said first and second halftone methods.