BLOCK VECTOR CODING FOR INTRA BLOCK COPYING

摘要

An example method for decoding video data includes receiving syntax elements (SEs) for a component of a block vector that represents a displacement between a current block of video data and a predictor block of video data; decoding the SEs to determine a value of the component by at least: decoding a first SE to determine whether or not an absolute value of the component (AbsValcomp) is greater than zero; where AbsValcomp is greater than zero, decoding a second SE to determine whether AbsValcomp is greater than a threshold based on an order of a set of codes; where AbsValcomp is greater than the threshold, decoding, using the set of codes, a third SE to determine AbsValcomp minus an offset based on the order of the set of codes; and where AbsValcomp is greater than zero, decoding a fourth SE to determine a sign of the value of the component.

主权项

1. A method for decoding video data, the method comprising:
receiving, in an encoded video bitstream and for a current block of video data, a residual block and a set of syntax elements for a component of a block vector that represents a displacement between the current block and a predictor block of video data in a picture in which the current block resides; decoding the set of syntax elements to determine a value of the component of the block vector by at least:
decoding a first syntax element of the set of syntax elements to determine whether or not an absolute value of the component of the block vector is greater than zero;based on the absolute value of the component of the block vector being greater than zero, decoding a second syntax element of the set of syntax elements to determine whether or not the absolute value of the component of the block vector is greater than a threshold that is based on an order of a set of codes;based on the absolute value of the component of the block vector being greater than the threshold, decoding, using the set of codes, a third syntax element of the set of syntax elements to determine the absolute value of the component of the block vector minus an offset that is based on the order of the set of codes; andbased on the absolute value of the component of the block vector being greater than zero, decoding a fourth syntax element of the set of syntax elements to determine whether the value of the component of the block vector is positive or negative; determining, based on the value of the component of the block vector, the predictor block of video data; and reconstructing the current block of video data based on the predictor block of video data and the residual block.