Patent ID: 7593588
Filing Date: 2009-09-22
Classification: G06T,H04N

Abstract:
1. An image processing device, comprising: recursive filtering means for smoothing an input image, the recursive filtering means including: edge setting means for setting at least one edge having a predetermined angle from a scanning line direction of the input image; and control means for smoothing the input image to be smoothed in correspondence with the edge set by the edge setting means, the control means including means for calculating a difference value between the input image, inputted frame-by-frame, and a second input image at corresponding address one line before, means for multiplying the difference value by a coefficient corresponding to the difference value, means for shifting the second input image at the corresponding address one line before, in correspondence with the edge set by the edge setting means, and means for adding the difference value, which is multiplied by the corresponding coefficient, to the second input image, which is shifted by the means for shifting, and outputting a result of the addition as an unsharpened image; low-frequency component compression means for setting an amount of compression of low-frequency components of the input image according to an output of the recursive filtering means; arithmetic means for compressing the low-frequency components of the input image by subtracting the unsharpened image from the input image inputted frame-by-frame and using the amount of compression set by the low-frequency component compression means; and means for outputting the resulting image, whose low-frequency components are compressed, to a monitor.