Patent ID: 6542642
Filing Date: 2003-04-01
Classification: G06T,H04N

Abstract:
An image processing apparatus comprising:a) absolute difference value calculating means for calculating an absolute difference value of each pixel between image data of first and second fields constituting a frame image; b) first comparison means for comparing the absolute difference value calculated by said absolute difference value calculating means with a first threshold value; c) calculation means for calculating a sum total of comparison results of said first comparison means; d) judging means for judging a field correlation of the image data between the first and second fields in accordance with the sum total calculated by said calculation means; and e) transforming means for orthogonally transforming the image data in accordance with an output of said judging means, wherein said transforming means is provided with a field transform mode for transforming in a unit of a field and a frame transform mode for transforming in a unit of a frame.