Patent ID: 6289133
Filing Date: 2001-09-11
Classification: G06T

Abstract:
An image processing apparatus for generating un-sharp signals from input image data representing an input image, comprising:setting means for setting an amount of blur;reduction ratio determining means for determining a reduction ratio for reducing an input image based on the amount of blur, wherein the reduction ratio is an integer which is not greater than the amount of blur, and by which the amount of blur is divisible;amount of blur determining means for determining an amount of blur to be applied to a reduced input image based on the amount of blur set by said setting means and the reduction ratio;reducing means for reducing the input image based on the reduction ratio in order to produce a reduced input image;blurring means for performing blurring processing to the reduced input image, using the amount of blur determined by said amount of blur determining means;enlarging means for performing enlarging processing to the reduced input image having been processed in said blurring processing and outputting the un-sharp signals, wherein the un-sharp signals have a pixel density or a number of pixels which is equal to that of the input image; andimage processing means for performing image processing to the input image using the un-sharp signals.