Patent ID: 6549682
Filing Date: 2003-04-15
Classification: G06F,G06T,G09G

Abstract:
An image data processing apparatus for converting a first image of M1Ã—N1 pixel data into a second image of M2Ã—N2 pixel data, comprising:a first storage means for storing the input pixel data of said first image; a second storage means for storing tables of area ratio pattern coefficients for plural calculation expressions; a select means for selecting a calculation expression corresponding to an area ratio pattern determined by the shared area ratio between a subject pixel of said second image and the pixels of said first image overlapping said subject pixel when said first and second images are made equal in size and superimposed; and a calculator means for calculating the pixel data of said second image by the use of the pixel data of said first image, the selected calculation expression, and the area ratio pattern coefficients corresponding to the selected calculation expression.