Simplified advanced residual prediction for 3d-hevc

A method of coding video data, the method comprising:

• determining a current block of a first view is coded using an advanced residual prediction (ARP) mode, wherein the current block is bi-directionally predicted;
• for a luma block of the current block, performing ARP for a first prediction direction to determine a first predictive block of the luma block;
• for the luma block of the current block, performing ARP for a second prediction direction to determine a second predictive block of the luma block;
• for a chroma block of the current block, performing ARP for only one of the first prediction direction or the second prediction direction to determine a first predictive block of the chroma block.

A computer-readable storage medium having stored thereon instructions that when executed cause one or more processors to:

• determine that a current block of a first view is coded using an advanced residual prediction (ARP) mode, wherein the current block is bi-directionally predicted;
• determine a first disparity motion vector and a second disparity motion vector for the current block;
• locate, with the first disparity motion vector, a first corresponding block for the current block in a second view;
• locate, with the second disparity motion vector, a second corresponding block of the current block in a third view;
• determine a motion vector from motion information of at least one of the first corresponding block of the current block and the second corresponding block of the current block;
• using the motion vector, identify a reference block of the current block in the first view, a reference block of the first corresponding block in the second view, and a reference block of the second corresponding block in the third view;
• generate a first predictive block based on the first corresponding block, the reference block of the current block, and the reference block of the first corresponding block;
• generate a second predictive block based on the second corresponding block, the reference block of the current block, and the reference block of the second corresponding block.

A device for coding video data, the device comprising:

• a memory configured to store video data;
• and
• one or more processors configured to:
• determine that a current block of a first view is coded using an advanced residual prediction (ARP) mode, wherein the current block is bi-directionally predicted;
• determine a first disparity motion vector and a second disparity motion vector for the current block;
• locate, with the first disparity motion vector, a first corresponding block for the current block in a second view;
• locate, with the second disparity motion vector, a second corresponding block of the current block in a third view;
• determine a motion vector from motion information of at least one of the first corresponding block of the current block and the second corresponding block of the current block;
• using the motion vector, identify a reference block of the current block in the first view, a reference block of the first corresponding block in the second view, and a reference block of the second corresponding block in the third view;
• generate a first predictive block based on the first corresponding block, the reference block of the current block, and the reference block of the first corresponding block;
• and
• generate a second predictive block based on the second corresponding block, the reference block of the current block, and the reference block of the second corresponding block.

A device for coding video data, the device comprising:

• a memory configured to store video data;
• and
• one or more processors configured to:
• determine a current block of a first view is coded using an advanced residual prediction (ARP) mode, wherein the current block is bi-directionally predicted;
• for a luma block of the current block, performing ARP for a first prediction direction to determine a first predictive block of the luma block;
• for the luma block of the current block, perform ARP for a second prediction direction to determine a second predictive block of the luma block;
• and
• for a chroma block of the current block, performing ARP for only one of the first prediction direction or the second prediction direction to determine a first predictive block of the chroma block.

A device for coding video data, the device comprising:

• a memory configured to store video data;
• and
• one or more processors configured to:
• determine a current block of a first view is coded using an advanced residual prediction (ARP) mode;
• for a luma block of the current block, performing ARP to determine a predictive block of the luma block;
• and
• for a chroma block of the current block, determining whether to perform ARP for the chroma block based on a size of the chroma block.

An apparatus for coding video data, the apparatus comprising:

• means for determining that a current block of a first view is coded using an advanced residual prediction (ARP) mode, wherein the current block is bi-directionally predicted;
• means for determining a first disparity motion vector and a second disparity motion vector for the current block;
• means for locating, with the first disparity motion vector, a first corresponding block for the current block in a second view;
• means for locating, with the second disparity motion vector, a second corresponding block of the current block in a third view;
• means for determining a motion vector from motion information of at least one of the first corresponding block of the current block and the second corresponding block of the current block;
• means for identifying, using the motion vector, a reference block of the current block in the first view, a reference block of the first corresponding block in the second view, and a reference block of the second corresponding block in the third view;
• means for generating a first predictive block based on the first corresponding block, the reference block of the current block, and the reference block of the first corresponding block;
• means for generating a second predictive block based on the second corresponding block, the reference block of the current block, and the reference block of the second corresponding block.