Patent Document ID: 7526138
Application ID: 10826635
Patent Status: 1

Claim One:
1. A computer-implemented method of pixel-level image resampling, comprising: using a processor to perform the steps of: receiving an input image to be resampled; calculating second order moments for an input auto-correlation matrix and an input covariance vector from input pixel values in an input context for the input image to be resampled; transposing the input auto-correlation matrix and the input covariance vector using the second order moments and a transpose operator; substituting the transposed input auto-correlation matrix and the transposed input covariance vector for an unknown output auto-correlation matrix and an unknown output covariance vector for an output context; determining an optimum set of filter tap weights for minimizing prediction error for a resampled output image from the output auto-correlation matrix and the output covariance vector; and calculating output pixel values from the input pixel values and the optimum set of filter tap weights to produce the resampled output image.