Complexity reduction of overlapped block motion compensation

A method of processing video data, comprising:

• identifying a first motion vector and a second motion vector, the first motion vector associated with a first video block and referring to a reference picture, the second motion vector associated with a second video block neighboring the first video block;
• determining that the second motion vector refers to the same reference picture as the first motion vector and that the first video block and the second video block are predicted using a same directional prediction mode;
• deciding, based on a difference between the first motion vector and the second motion vector, whether to perform overlapped block motion compensation (OBMC) based on the second video block for the first video block;
• and
• processing the first video block in accordance with the deciding, wherein on a condition that the difference indicates that the first motion vector is substantially different from the second motion vector, OBMC based on the second video block is performed for the first video block, and on a condition that the difference indicates that the first motion vector is not substantially different from the second motion vector, OBMC based on the second video block is skipped for the first video block.

A coding device, comprising:

• a processor configured to:
• identify a first motion vector and a second motion vector, the first motion vector associated with a first video block and referring to a reference picture, the second motion vector associated with a second video block neighboring the first video block;
• determine that the second motion vector refers to the same reference picture as the first motion vector and that the first video block and the second video block are predicted using a same directional prediction mode;
• decide, based on a difference between the first motion vector and the second motion vector, whether to perform overlapped block motion compensation (OBMC) based on the second video block for the first video block;
• and
• process the first video block in accordance with the deciding, wherein on a condition that the difference indicates that the first motion vector is substantially different from the second motion vector, OBMC based on the second video block is performed for the first video block, and on a condition that the difference indicates that the first motion vector is not substantially different from the second motion vector, OBMC based on the second video block is skipped for the first video block.