METHOD FOR IMAGE-SCALING USING VARIABLE FILTER-WINDOW AND CALCULATING A SIZE OF FILTER-WINDOW FOR IMAGE-SCALING

摘要

PURPOSE: An image scaling method using a variable filter window and a method for calculating the size of a filter window of image scaling are provided to variably control the size of a filter window. CONSTITUTION: The pixel value of a conversion pixel is calculated using a filter window of virtual size on an original pixel(S110). The size of the filter window is calculated using constraint condition which is drawn from the relation of the pixel value of the original pixel and the pixel value of the conversion pixel(S120,S130). The pixel value of the conversion pixel is calculated by using the calculated filter window(S200). A conversion image is produced by using the pixel value of the calculated conversion pixel(S300).