Patent ID: 8660174
Filing Date: 2014-02-25
Classification: H04N

Abstract:
1. A method for adaptive offset processing of reconstructed, deblocked reconstructed, or deblocked-and-loop-filtered reconstructed video data, the method comprising: receiving the reconstructed, deblocked reconstructed, or deblocked-and-loop-filtered reconstructed video data; selecting a region for the reconstructed, deblocked reconstructed, or deblocked-and-loop-filtered reconstructed video data; determining a class for each of pixels in the region of the reconstructed, deblocked reconstructed, or deblocked-and-loop-filtered reconstructed video data based on characteristic measurement of said each of the pixels; determining intensity offset for the class according to the pixels in the region of the reconstructed, deblocked reconstructed, or deblocked-and-loop-filtered reconstructed video data and respective pixels in a respective region of associated original video data; and compensating intensities of the pixels in the region of the reconstructed, deblocked reconstructed, or deblocked-and-loop-filtered reconstructed video data based on the intensity offset for the class; wherein said determining a class for each of pixels in the region comprises dividing pixel intensity into N bands between a minimum value and a maximum value, wherein N is an integer; and wherein the minimum value is provided to a decoder so that the decoder can recover the minimum value.