发明名称 |
METHOD AND DEVICE FOR ARITHMETIC CODING OF VIDEO, AND METHOD AND DEVICE FOR ARITHMETIC DECODING OF VIDEO |
摘要 |
Methods and apparatuses for arithmetic encoding/decoding of video data. The arithmetic decoding method includes arithmetically decoding prefix bit strings representing a two-dimensional location of a last significant coefficient in a block sequentially by using a context model, arithmetically decoding suffix bit strings in a bypass mode, and performing inverse binarization on the arithmetically decoded prefix bit strings and suffix bit strings to acquire the location of the last significant coefficient in the block. |
申请公布号 |
US2015181255(A1) |
申请公布日期 |
2015.06.25 |
申请号 |
US201514636571 |
申请日期 |
2015.03.03 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
KIM Il-koo;PARK Jeong-hoon |
分类号 |
H04N19/91;H04N19/61;H04N19/13 |
主分类号 |
H04N19/91 |
代理机构 |
|
代理人 |
|
主权项 |
1. An apparatus for decoding a video, the apparatus comprising:
a syntax element decoder configured to obtain an x coordinate prefix bitstring of a last significant coefficient in a transformation block by performing context-based-arithmetic decoding on a bitstream, obtain a y coordinate prefix bitstring of the last significant coefficient by performing context-based-arithmetic decoding on the bitstream, obtain an x coordinate suffix bitstring of the last significant coefficient by performing bypass mode decoding on the bitstream, obtain a y coordinate suffix bitstring of the last significant coefficient by performing bypass mode decoding on the bitstream, obtain an inverse-binarized x coordinate prefix and an inverse-binarized y coordinate prefix by performing inverse binarization according to a first binarization method on the x coordinate prefix bitstring and the y coordinate prefix bitstring; obtain an inverse-binarized x coordinate suffix and an inverse-binarized y coordinate suffix by performing inverse binarization according to a second binarization method on the x coordinate suffix bitstring and the y coordinate suffix bitstring; reconstruct an x coordinate of the last significant coefficient based on the inverse-binarized x coordinate prefix and the inverse-binarized x coordinate suffix, and reconstruct a y coordinate of the last significant coefficient based on the inverse-binarized y coordinate prefix and the inverse-binarized y coordinate suffix, wherein, after the x coordinate prefix bitstring and the y coordinate prefix bitstring are obtained via the context-based-arithmetic decoding, the x coordinate suffix bitstring and the y coordinate suffix bitstring are obtained via the bypass mode decoding. |
地址 |
Suwon-si KR |