Patent Document ID: 20070206025
Application ID: 10575529
Patent Status: 0

Claim One:
1. An image processor for use in drawing an image to a memory having a two-dimensional matrix of pixel drawing regions, each of the pixel drawing regions representing a single pixel in the image, said image processor comprising: a plurality of relative orientation detection filters each representing a distinguishing feature of a relative orientation of an edge segment to be drawn to the memory; drawing means for drawing the image to the memory or a buffer having the same structure as the memory; detection means for detecting a connected sequence of pixel drawing regions making up an edge in the image drawn by said drawing means, and detecting the relative orientation of the connected sequence of pixel drawing regions by means of selecting out one relative orientation detection filter representing the distinguishing feature that is closest to the distinguishing feature of the connected sequence of pixel drawing regions in question; and smoothing means for smoothing a pixel value of each pixel in the connected sequence of pixel drawing regions on the edge using smoothing coefficients, the smoothing coefficients being either computed depending on the relative orientation detected by said detection means or obtained from outside.