Patent ID: 9609171
Date: 2017-03-28
CPC Classifications: G03G,G06K,H04N

Claim:
1. An image processing device, comprising: a first gradation processor to apply first pseudo halftone processing to image data; an edge detector to detect an edge portion of the image data to output a detection result; a correction value calculator to calculate an edge correction amount and convert the image data to corrected image data based on the edge correction amount; a second gradation processor to apply, to the corrected image data, second pseudo halftone processing for edge processing; an output selector to adopt a processing result at the first gradation processor to a non-edge portion of the image data, and a processing result at the second gradation processor to an edge portion of the image data, based on the detection result at the edge detector; and a converter to apply luminance conversion processing to the image data in accordance with attribute information of the image data, and output the processed image data to the edge detector and the correction value calculator.