| 摘要 |
Abstract METHOD, APPARATUS AND SYSTEM FOR ENCODING AND DECODING THE SIGNIFICANCE MAP FOR RESIDUAL COEFFICIENTS OF A TRANSFORM UNIT Disclosed are methods of encoding and decoding a significance map to and from a 5 bitstream. Decoding comprises identifying a scan pattern by which the bitstream can be decoded. A set index value is decoded from the bitstream that specifies a set of flags according to the scan pattern that contains a last significant coefficient flag of the significance map, and individual significance flags are decoded and the decoded values written into the significance map according to the scan pattern and including an entirety of 10 the specified set of flags. Encoding a significance map includes identifying a scan pattern by which the significance map can be scanned to form a list of significant coefficient flags. Subject to the identified scan pattern, encoding identifies a group of significant coefficient flags including a last significant coefficient flag and referencing the identified group with a scan index value. The significance map is then scanned in accordance with the scan 15 pattern up to and including an entirety of the identified group and the scanned flag values then encoded. 5676365_1 P009023_specijodge cv " cu :t0! 5 CO, r 00 co C > m N .C U)E U)f c CI LoLn0 PfCUf7 fin -t-n |
