Method of Sub-Prediction Unit Prediction in 3D Video Coding

A method for three-dimensional or multi-view video encoding or decoding, the method comprising:

• receiving input data associated with a current texture PU (prediction unit) in a dependent view;
• if sub-PUs from splitting the current texture PU are not smaller than a minimum PU split size or the current texture PU does not belong to a restricted partition group:
• splitting the current texture PU into said sub-PUs;
• locating depth sub-blocks or texture sub-blocks in a reference view corresponding to the current texture PU using first derived DVs (disparity vectors);
• and
• generating temporal prediction for the current texture PU using motion information of the texture sub-blocks in the reference view or generating inter-view prediction based on warped texture samples in the reference view using the depth sub-blocks for a three-dimensional coding tool;
• and
• if the sub-PUs from splitting the current texture PU are smaller than the minimum PU split size or the current texture PU belongs to the restricted partition group:
• locating a depth block or a texture block in the reference view corresponding to the current texture PU using a second derived DV;
• and
• generating the temporal prediction for the current texture PU using the motion information of the texture block in the reference view or generating the inter-view prediction based on the warped texture samples in the reference view using the depth block;
• and
• encoding or decoding the current texture PU using the temporal prediction or the inter-view prediction.

An apparatus for three-dimensional or multi-view video coding system, the apparatus comprising one or more electronic circuits configured to:

• receive input data associated with a current texture PU (prediction unit) in a dependent view;
• split the current texture PU into sub-PUs;
• locate depth sub-blocks or texture sub-blocks in a reference view corresponding to the current texture PU using derived DVs (disparity vectors);
• and
• generate temporal prediction for the current texture PU using motion information of the texture sub-blocks in the reference view or generating inter-view prediction based on warped texture samples in the reference view using the depth sub-blocks for a three-dimensional coding tool;
• and
• when the temporal prediction or the inter-view prediction generated is bi-prediction:
• encode or decode the current texture PU using only the temporal prediction or the inter-view prediction in List0.

An apparatus for three-dimensional or multi-view video coding system, the apparatus comprising one or more electronic circuits configured to:

• receive input data associated with a current texture PU (prediction unit) in a dependent view;
• if sub-PUs from splitting the current texture PU are not smaller than a minimum PU split size or the current texture PU does not belong to a restricted partition group:
• split the current texture PU into said sub-PUs;
• locateg depth sub-blocks or texture sub-blocks in a reference view corresponding to the current texture PU using first derived DVs (disparity vectors);
• and
• generate temporal prediction for the current texture PU using motion information of the texture sub-blocks in the reference view or generating inter-view prediction based on warped texture samples in the reference view using the depth sub-blocks for a three-dimensional coding tool;
• and
• if the sub-PUs from splitting the current texture PU are smaller than the minimum PU split size or the current texture PU belongs to the restricted partition group:
• locate a depth block or a texture block in the reference view corresponding to the current texture PU using a second derived DV;
• and
• generate the temporal prediction for the current texture PU using the motion information of the texture block in the reference view or generating the inter-view prediction based on the warped texture samples in the reference view using the depth block;
• and
• encode or decode the current texture PU using the temporal prediction or the inter-view prediction.