Method and apparatus for bi-prediction of illumination compensation

An apparatus for predictive coding in three-dimensional (3D) and multi-view coding systems, the apparatus comprising one or more electronic circuits, wherein said one or more electronic circuits are configured to:

• receive input data associated with a current texture block in a dependent view;
• when illumination compensation is enabled and uni-prediction is selected for the current texture block,
• generate a single reference block in reference list_0 or reference list_1 by invoking a selected reconstruction process for the current texture block, wherein the selected reconstruction process generates the single reference block based on a single temporal reference block when Inter prediction is used for the current texture block, and based on a single inter-view reference block when inter-view prediction is used for the current texture block;
• and
• generate a single illumination compensated reference block by applying a selected illumination compensation process to the single reference block, wherein the single illumination compensated reference block is used as a final reference block;
• when the illumination compensation is enabled and bi-prediction is selected for the current texture block,
• generate a first reference block in the reference list_0 by invoking the selected reconstruction process for the current texture block;
• generate a second reference block in the reference list_1 by invoking the selected reconstruction process for the current texture block;
• generate a first illumination compensated reference block by applying the selected illumination compensation process to the first reference block;
• generate a second illumination compensated reference block by applying the selected illumination compensation process to the second reference block;
• and
• derive the final reference block from an average of the first illumination compensated reference block and the second illumination compensated reference block;
• and
• encode or decode the current texture block using the final reference block as a predictor, wherein a unified clipping process is applied for uni-prediction and bi-prediction.