Method and apparatus of disparity vector derivation for three-dimensional and multi-view video coding

An apparatus for motion vector prediction using a derived disparity vector (DV) determined directly from an associated depth block, the apparatus comprising:

• one or more electronic circuits configured to:
• receive input data associated with a current texture block of a current texture picture in a current dependent view;
• receive a depth block associated with the current texture block;
• determine a current derived DV for the current texture block directly from the depth block without checking for availability of motion information from neighboring blocks of the current texture block;
• in response to current motion information corresponding to inter-view prediction having the current DV pointing to an inter-view reference picture, encoding the current DV using the current derived DV as a motion vector predictor (MVP);
• in response to the current motion information corresponding to temporal prediction having a current motion vector (MV) pointing to a temporal reference picture, performing the steps of:
• locating a corresponding texture block in a reference view according to the current derived DV and a position of the current texture block;
• and
• encoding the current MV using a derived MV of the corresponding texture block in the reference review as the MVP.

A non-transitory computer readable medium storing program instructions causing a processing circuit to perform motion vector prediction using a derived disparity vector (DV) determined directly from an associated depth block,

• the processing circuit being configured by the computer readable medium to perform the steps of:
• receiving input data associated with current motion information of a current texture block of a current texture picture in a current dependent view;
• receiving a depth block associated with the current texture block;
• determining a derived DV for the current texture block directly from the depth block without checking for availability of motion information from neighboring blocks of the current texture block;
• in response to the current motion information corresponding to inter-view prediction having a current DV pointing to an inter-view reference picture,
• encoding the current DV using the derived DV as a MVP (motion vector predictor);
• and
• in response to the current motion information to temporal prediction having a current motion vector (MV) pointing to a temporal reference picture,
• encoding the current MV using a derived MV of a corresponding texture block in a reference view as the MVP,
• wherein the corresponding texture block in the reference view is located according to the derive DV and position of the current texture block.