Patent Document ID: 20140177712
Application ID: 14140183
Patent Status: 0

Claim One:
1. A method of adaptively compensating for a local illumination mismatch in inter-frame prediction during encoding and decoding of a multiview video sequence, the method being performed by a computer system, and comprising: obtaining a value of a pixel of a current encoded block included in an encoded frame, and a value of a pixel of a reference block included in a reference frame; obtaining values of pixels restored by encoding and then decoding, from a vicinity of the current encoded block, and from a vicinity of the reference block; excluding from consideration a pixel included in the vicinity of the current encoded block and a pixel included in the vicinity of the reference block, the pixels being estimated to be unreliable for computation of a correction parameter used to correct a change in illumination by at least one preset criterion; determining a numerical ratio between pixels of the reference block, a numerical ratio between reliable pixels located in the vicinity of the current encoded block, and a numerical ratio between reliable pixels located in the vicinity of the reference block; computing the correction parameter, based on the determined numerical ratios considering an initial value; and estimating a change in values of pixels of the reference block, wherein, when the change is estimated to be essential, the values of the pixels of the reference block are corrected using the computed correction parameter.