Patent ID: 8416861
Filing Date: 2013-04-09
Classification: H04N

Abstract:
1. An apparatus, comprising, at least a processor, a memory operationally associated with said processor and having computer coded instructions therein, said instructions when executed by the processor causing the apparatus to: operate as an image filter, wherein at least one integer coefficient of said image filter is restricted, at least one of a convolution sum and multiple partial convolution sums of said image filter being determined based at least in part on said at least one integer coefficient, said at least one of a convolution sum and multiple partial convolution sums having a binary representation with a fixed maximum number of bits, and said at least one integer coefficient having a binary representation with a number of bits defined by a precision index; generate an output of said adaptive image filter based at least in part on said at least one of a convolution sum and multiple partial convolution sums; right shift said multiple partial convolution sums; compute a sum of said right shifted multiple partial convolution sums and a negative number; and right shift said computed sum of said right shifted multiple partial convolution sums and said negative number.