IMAGE PROCESSING DEVICE, IMAGE FORMING APPARATUS, IMAGE READING DEVICE, IMAGE PROCESSING METHOD, IMAGE PROCESSING PROGRAM, AND COMPUTER READABLE RECORDING MEDIUM WITH IMAGE PROCESSING PROGRAM RECORDED THEREON

摘要

PPROBLEM TO BE SOLVED: To improve accuracy in region separation processing rather than that of a conventional image processing device by switching a first processing mode during which region separation processing is performed upon image data on which density correction processing has been performed, and a second processing mode during which region separation processing is performed upon image data on which density correction processing has not been performed. PSOLUTION: The image processing device 20 includes: a region separation processing section 5 for performing region separation processing upon image data corresponding to an image to be processed; first and second input gradation correction sections 4 and 6 for performing density correction processing upon the image data while referring to a conversion curve indicating a relationship between a density before correction and a density after correction; and a mode control section 12 for switching a first processing mode during which the region separation processing is performed upon image data on which the density correction processing has been performed, and a second processing mode during which the region separation processing is performed upon image data on which the density correction processing has not been performed. PCOPYRIGHT: (C)2007,JPO&INPIT