Patent ID: 8761536
Filing Date: 2014-06-24
Classification: G06T

Abstract:
1. An image processing apparatus, comprising: a thinning processing unit which performs thinning processing on image data; a smoothing processing unit which performs smoothing processing on the image data; an edge direction determination unit which determines an edge direction with respect to each pixel of the image data; a blending processing unit which decides a pixel value of a target pixel of when the smoothing processing and the thinning processing are realized at the same time depending on a combination of whether the thinning processing is performed or not and whether the smoothing processing is performed or not on the target pixel by using pixel values of the target pixel and a surrounding pixel of the target pixel, change amounts in pixel value due to the smoothing processing, change amounts in pixel value due to the thinning processing, and the edge direction which is determined with respect to the target pixel; and a thinning adjustment unit which determines whether a thinned pixel becomes isolated by change amounts in pixel value due to the thinning processing of the target pixel and the surrounding pixel, the thinning adjustment unit resetting the change amount in pixel value due to the thinning processing of the thinned pixel among the target pixel and the surrounding pixel adjacent to the target pixel in the edge direction or in an opposite-edge direction to a value of zero if the thinned pixel is determined to be isolated and wherein the blending processing unit uses the reset change amount in pixel value due to the thinning processing to decide the pixel value of the target pixel.