Method of inter-view residual prediction with reduced complexity in three-dimensional video coding

An apparatus of residual prediction in a three-dimensional (3D) or multi-view coding system, the apparatus comprising one or more electronic circuits configured to:

• receive input data associated with a current block of a current picture in a current dependent view;
• when a residual prediction mode is enabled and the current block is coded using uni-prediction,
• generate a residual signal for the current block based on only list 0 reference data or list 1 reference data;
• and
• generate a residual predictor using only the list 0 reference data or the list 1 reference data according to a first residual generation process;
• and
• when the residual prediction mode is enabled and the current block is coded using bi-prediction,
• generate the residual signal for the current block based on both the list 0 reference data and list 1 reference data;
• and
• generate the residual predictor from a list 0 residual predictor and a list 1 residual predictor, wherein the list 0 residual predictor is generated using the list 0 reference data of the current block according to a second residual generation process, and the list 1 residual predictor is generated using the list 1 reference data of the current block according to a third residual generation process;
• encode or decode of the current block by applying the residual prediction to the residual signal of the current block using the residual predictor;
• and
• wherein the first residual generation process, the second residual generation process and the third residual generation process all include at least one of same data clipping process and same reference picture selection process.

A method of residual prediction in a three-dimensional (3D) or multi-view coding system, the method comprising:

• receiving input data associated with a current block of a current picture in a current dependent view;
• when a residual prediction mode is enabled and the current block is coded using uni-prediction,
• generating a residual signal for the current block based on only list 0 reference data or list 1 reference data;
• and
• generating a residual predictor using only the list 0 reference data or the list 1 reference data;
• and
• when the residual prediction mode is enabled and the current block is coded using bi-prediction,
• generating the residual signal for the current block based on both the list 0 reference data and list 1 reference data;
• and
• generating the residual predictor from a list 0 residual predictor and a list 1 residual predictor, wherein the list 0 residual predictor is generated using the list 0 reference data of the current block, and the list 1 residual predictor is generated using the list 1 reference data of the current block;
• encoding or decoding of the current block by applying the residual prediction to the residual signal of the current block using the residual predictor;
• and
• wherein an identical motion checking process is disabled for the current block when the residual prediction mode is enabled, and the identical motion checking process is performed only for blocks with the residual prediction mode disabled.