SIGNALING OF DEBLOCKING FILTER PARAMETERS IN VIDEO CODING

摘要

This disclosure describes techniques for signaling deblocking filter parameters for a current slice of video data with reduced bitstream overhead. Deblocking filter parameters may be coded in one or more of a picture layer parameter set and a slice header. The techniques reduce a number of bits used to signal the deblocking filter parameters by coding a first syntax element that indicates whether deblocking filter parameters are present in both the picture layer parameter set and the slice header, and only coding a second syntax element in the slice header when both sets of deblocking filter parameters are present. Coding the second syntax element is eliminated when deblocking filter parameters are present in only one of the picture layer parameter set or the slice header. The second syntax element indicates which set of deblocking filter parameters to use to define a deblocking filter applied to a current slice.

主权项

1. A method of decoding video data, the method comprising:
decoding a first syntax element defined to indicate whether deblocking filter parameters are present in both a picture layer parameter set and a slice header; when the first syntax element indicates that deblocking filter parameters are present in both the picture layer parameter set and the slice header, decoding a second syntax element in the slice header defined to indicate whether to use a first set of deblocking filter parameters included in the picture layer parameter set or a second set of deblocking filter parameters included in the slice header to define a deblocking filter applied to a current video slice; when the first syntax element indicates that deblocking filter parameters are not present in both the picture layer parameter set and the slice header, determining that the second syntax element is not present in the slice header to be decoded; decoding a video block of the current video slice; and applying the defined deblocking filter to the video block of the current video slice.