METHOD AND DEVICE FOR DETERMINING PARAMETERS FOR ENCODING OR DECODING OF AN IMAGE OF A VIDEO SEQUENCE

摘要

A method of and a device for determining encoding parameters for encoding, into a bitstream, a portion of an image of a video sequence, the image portion being encoded by motion compensation with respect to at least one reference image portion, the encoding parameters for encoding the image portion including a coding mode and a motion information predictor, wherein the coding mode is selected from among at least a first coding mode and a second coding mode and wherein the motion information predictor is selected from a set of motion information predictors which is the same for at least the first and the second coding modes, the selection of the coding mode and the motion information predictor involving comparing costs of encoding the image portion using the motion information predictors of the set in the two coding modes, the method comprising or the device comprising means for: omitting, for at least one said motion information predictor of the set, computing of such a cost for at least one of said first and second coding modes. Consequently encoding time and complexity may be reduced and encoding performance may be improved.

主权项

1. A method of determining encoding parameters for encoding, into a bitstream, a portion of an image of a video sequence, the image portion being encoded by motion compensation with respect to at least one reference image portion, the encoding parameters for encoding the image portion including a coding mode and a motion information predictor, wherein the coding mode is selected from among at least a first coding mode and a second coding mode and wherein the motion information predictor is selected from a set of motion information predictors which is the same for at least the first and the second coding modes, the selection of the coding mode and the motion information predictor involving comparing costs of encoding the image portion using the motion information predictors of the set in the two coding modes, the method comprising:
omitting, for at least one said motion information predictor of the set, computing of such a cost for at least one of said first and second coding modes.