INTER FRAME CANDIDATE SELECTION FOR A VIDEO ENCODER

摘要

Inter frame candidate selection may include identifying a current block from a current input frame from an input video stream, and generating an encoded block by encoding the current block, wherein encoding the current block includes determining an inter-coding candidate motion vector. Determining the inter-coding candidate motion vector may include identifying a plurality of motion vectors, wherein the plurality of motion vectors includes a context motion vector identified from a block neighboring the current block in the current input frame, a zero valued motion vector, and an estimated motion vector based on the current block and a reference frame, determining a plurality of cost values by determining a cost value for each respective motion vector from the plurality of motion vectors, and identifying a motion vector from the plurality of motion vectors having a minimal cost value as the inter-coding candidate motion vector.

主权项

1. A method, comprising:
identifying a current block from a current input frame from an input video stream; generating, by a processor in response to instructions stored on a non-transitory computer readable medium, an encoded block by encoding the current block, wherein encoding the current block includes determining an inter-coding candidate motion vector, wherein determining the inter-coding candidate motion vector includes:
identifying a plurality of motion vectors, wherein the plurality of motion vectors includes a context motion vector identified from a block neighboring the current block in the current input frame, a zero valued motion vector, and an estimated motion vector based on the current block and a reference frame,determining a plurality of cost values by determining a cost value for each respective motion vector from the plurality of motion vectors, wherein determining the cost value for a motion vector from the plurality of motion vectors includes:
determining a distortion measurement for encoding the current block using the motion vector;determining an estimated encoding cost for encoding the current block using the motion vector;identifying a weighting value; anddetermining the cost value as a sum of the distortion measurement and a product of the weighting value and the estimated encoding cost, andidentifying a motion vector from the plurality of motion vectors having a minimal cost value as the inter-coding candidate motion vector; including the encoded block in an output bitstream; and storing or transmitting the output bitstream.