Patent AU-2015215982-B2 (AU)
Title: Predictive encoding method, predictive encoding device, and predictive encoding program of motion vector, and, predictive decoding method, predictive decoding device, and predictive decoding program of motion vector
Inventor: FUJIBAYASHI AKIRA
IPC: H04N19/52
Filed: 2015-08-24
Granted: 2016-05-05
Abstract: PREDICTIVE ENCODING METHOD, PREDICTIVE ENCODING DEVICE, AND PREDICTIVE ENCODING PROGRAM OF MOTION VECTOR, AND, PREDICTIVE DECODING METHOD, PREDICTIVE DECODING DEVICE, AND PREDICTIVE DECODING PROGRAM OF MOTION A method for predictively encoding a motion vector used in motion compensated prediction of a video sequence consisting of a temporal sequence of frame pictures is disclosed. The method comprises a step of determining a motion vector of a target partition in a frame picture of an 0 encoding target in the video sequence; a step of determining a first motion vector predictor candidate that satisfies a predetermined criterion used in determination of motion vector predictor candidates. The first motion vector predictor candidate is determined from a motion vector or motion vectors of one or more partitions belonging to a left-neighboring region located on the left side of the target partition. The method also comprises a step of determining a 5 second motion vector predictor candidate that satisfies a predetermined criterion used for determination of motion vector predictor candidates, the second motion vector predictor candidate determined from a motion vector or motion vectors of one or more partitions belonging to an above-neighboring region located above the target partition; a step of selecting an optimum motion vector predictor and outputting motion vector predictor indication information o to specify the selected optimum motion vector predictor.. The optimum motion vector predictor is selected based on comparison between one or more motion vector predictor candidates including the first motion vector predictor candidate and the second motion vector predictor candidate, and the motion vector of the target partition. The method further comprises a step of encoding the motion vector predictor indication information, wherein a predicted signal of the 25 target partition is generated by referring to a reference frame with a frame number specified by a reference picture list identification and a reference picture identification, wherein the step of determining the first motion vector predictor candidate comprises determining the first motion vector predictor candidate from motion vectors of partitions in the left-neighboring region having a reference picture list identification and a reference picture identification coincident with the 30 reference picture list identification and the reference picture identification for the target partition, and wherein the step of determining the second motion vector predictor candidate comprises determining the second motion vector predictor candidate from motion vectors of partitions in the above-neighboring region having a reference picture list identification and a reference picture identification coincident with the reference picture list identification and the reference 35 picture identification for the target partition. 10368106_1