Patent ID: 6317523
Filing Date: 2001-11-13
Classification: G06T

Abstract:
An image data adjusting method for increasing the number of pixels of input image data by a given magnification in a given direction to obtain output image data, the method comprising:setting a tetragonal lattice including the pixels of the input image data at a corresponding position in an image represented by the output image data;calculating first-degree-interpolating pixel values of output pixels included in the tetragonal lattice based on pixel values of part of the input pixels which are stored in buffer memories, wherein the tetragonal lattice is formed by four input pixels of the input image data, and a corresponding neighborhood area is written in the output image data, the output pixel values being derived from pixel values of the four input pixels using the first-degree-interpolating calculation;using two line buffers to alternately receive and store new one-line input image data;setting the capacity of each line buffer to be greater than the width of the input image by one pixel; andstoring a dummy dot in each line buffer.