Patent ID: 8891633
Filing Date: 2014-11-18
Classification: H04N

Abstract:
1. A method of multi-level motion estimation for block-based video coding, the method comprising: constructing a reduced resolution image by: performing a reduced resolution search for blocks 64×64; performing refinement by neighboring blocks; providing a motion assignment for 16×16 blocks using neighboring blocks; performing a refinement search for 16×16 blocks; providing an error distribution analysis information for split-merge prediction and non-square block selection; performing a sub-pixel refinement; splitting 16×16 blocks into 8×8 blocks; merging four 16×16 blocks into one 32×32 partition; merging four 32×32 blocks into one 64×64 partition; and selecting a best non-square prediction using an error distribution field; wherein the reduced resolution image is calculated as a weighted sum of pixels in the original picture, as follows: where: