Image processing device, image processing method, and computer program product

摘要

An image processing device includes: an automatic color determining module that determines whether an image read from an original is a color image or a monochrome image according to a color determination result obtained by a color determining module; a color determination difference detecting module that detects a difference between a color determination result obtained by the color determining module with respect to a test pattern output on a recording medium and a color determination result obtained by the color determining module with respect to the test pattern output on a standard recording medium; and an automatic color selection condition adjusting module that adjusts a white pixel determination threshold and a black pixel determination threshold used for determination by the automatic color determining module according to a color determination difference detection result obtained by the color determination difference detecting module.

主权项

1. An image processing device comprising:
an original reading module that reads an image from an original; a color determining module that performs division determination into color regions including at least black and white for each pixel on the image read from the original by the original reading module; an automatic color determining module that determines whether the image read from the original by the original reading module is a color image or a monochrome image according to a color determination result obtained by the color determining module; a test pattern output module that outputs a test pattern including at least an edge portion of a black region on a recording medium; a color determination difference detecting module that detects a difference between a color determination result obtained by the color determining module with respect to the test pattern output on the recording medium by the test pattern output module and a color determination result obtained by the color determining module with respect to the test pattern output on a standard recording medium set as a standard in advance; and an automatic color selection condition adjusting module that adjusts a white pixel determination threshold and a black pixel determination threshold used for determination by the automatic color determining module according to a color determination difference detection result obtained by the color determination difference detecting module.