Patent ID: 9215440
Filing Date: 2015-12-15
Classification: H04N

Abstract:
1. A computer-implemented method to non-linearly warp an input image from a source aspect ratio to a target aspect ratio, the computer-implemented method comprising: receiving an input image associated with a source space having the source aspect ratio, the input image comprising a plurality of source pixels; applying an adaptive transformation to a source pixel within the plurality of source pixels and by operation of one or more computer processors, the adaptive transformation mapping the source pixel to a target space associated with an output image comprising a plurality of target pixels, the target space having the target aspect ratio, which is different from the source aspect ratio, wherein applying the adaptive transformation comprises determining filter parameters based on trading off blurring and aliasing, including calculating one or more determinants based on one or more matrices associated with each source pixel, where the one or more matrices include at least one of a Jacobian matrix and a covariance matrix; determining a target pixel, of the plurality of target pixels, that is affected by the source pixel based on the adaptive transformation; and writing the transformed source pixel into a location in the output image associated with the target pixel, wherein the output image is generated based on the input image and to the exclusion of any other input image.