Patent ID: 6424742
Filing Date: 2002-07-23
Classification: G06K,G06T

Abstract:
An image processing apparatus comprising:first discrimination means for discriminating an original image into one of plural types of fields in response to a first image signal obtained at a first density of the original image; characteristic value calculating means for calculating a characteristic change value in density, an average density and chroma of the original image in response to a second image signal of the original image obtained at a second density which is higher than the first density; second discrimination means for selecting one of plural threshold values according to the type of field discriminated by the first discrimination means, and comparing the characteristic change value calculated by the characteristic value calculating means with the selected threshold value, so as to output a result of second discrimination; and image processing means for processing predetermined image processes corresponding to the result of second discrimination of the image field performed by the second discrimination means, on the second image signal.