Patent ID: 8422829

Claim:
An interpolation method, suitable for calculating an interpolation value of an interpolation point between two points of an image, the interpolation method performed by a processor of an image processing device comprising: calculating a difference between pixel values of a first point and a second point of the image by the processor; determining a mixing weight of a first function and a second function according to an absolute value of the difference by the processor; mixing a first function and a second function according to the mixing weight to obtain a transformation function ƒ(x) by the processor; substituting a distance d between the interpolation point and the first point into the transformation function ƒ(x) to obtain an interpolation coefficient ƒ(d) of the interpolation point by the processor; and calculating the interpolation value of the interpolation point between the first point and the second point by using the interpolation coefficient ƒ(d) and the pixel values of the first point and the second point by the processor.