Patent ID: 6744921
Filing Date: 2004-06-01
Classification: H04N

Abstract:
An image processing apparatus comprising:input means for inputting image data representing an image; first determining means for determining whether or not a pixel of interest is a part of a character or a halftone area by detecting, based on the input image data, an amount of change in densities between the pixel of interest and neighboring pixels of the pixel of interest; second determining means for determining, based on the input image data, whether or not the pixel of interest is a part of a screened dot area; detecting means for detecting a thickness of a character or a line in the image for each pixel that is part of the character or the line, based on the determination results provided by said first and second determining means; and controlling means for controlling black-character processing of the image in units of a pixel, based on the detected thickness provided by said detecting means in units of a pixel.