Patent ID: 6385344
Filing Date: 2002-05-07
Classification: H04N

Abstract:
An image processing apparatus comprising:a means for judging a degree of likelihood of being a half tone image pixel or a character image pixel of a target pixel in an original and for outputting a judge degree in stepwise values; a gamma correction means having a plurality of density conversion curves showing relations between input density of image data and output density thereof for converting the image data by using one of the density conversion curves corresponding to the judgment result by the judging means; binary conversion means for photographic processing for carrying out binary conversion on a half tone image by using a predetermined method; said binary conversion means further comprises an image processor means for carrying out binary conversion processing on the half tone image by using one of at least two different kinds of image processing methods and outputting binary-converted image data; and a selector means selected by a user for selecting a binary-converted image data output by any one of said at least two kinds of image processing methods.