Patent ID: 9177357
Filing Date: 2015-11-03
Classification: G06T

Abstract:
1. A method for creating a coefficient table storing interpolation coefficients to be used in an image scaling process of converting input image data to U/D times (U and D are natural numbers) as output image data, the method comprising the steps of: (a) designing a filter having a transfer function for simultaneously performing conversions into U times and 1/D times; (b) converting interpolation coefficients defined by an impulse response of said filter into integers to calculate integer-converted interpolation coefficients; and (c) sorting said integer-converted interpolation coefficients in a sequence to be used in said process of converting input image data to U/D times and storing said integer-converted interpolation coefficients in said coefficient table, wherein said step (b) includes the steps of: said step (c) includes the steps of: