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US 10,218,993 B2Granted
Video encoding method, video decoding method and apparatus using same
AssigneeLG Electronics Inc.
InventorsHendry Hendry, Byeongmoon Jeon, Jungsun Kim, Sangoh Jeong
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Abstract
A video encoding method includes a step of encoding substreams which are rows of largest coding units (LCUs) in parallel with each other, and a step of transmitting a bit stream including the encoded substreams, where the number of the substreams may be the same as the number of entry points.
Claims14
A video decoding apparatus, comprising:
- a decoder configured to receive a bitstream including information on a slice header and information on substreams for a current slice segment, to obtain entry point information for the substreams from the slice header, and to decode the substreams based on the entry point information to reconstruct a picture;
- a memory configured to store the reconstructed picture,
- wherein the decoder comprises:
- an entropy decoding module configured to derive prediction information and residual information on a block of a current substream;
- a prediction module configured to derive prediction samples on the block based on the prediction information;
- an inverse transform module configured to derive residual samples on the block, wherein the residual samples are derived based on the residual information;
- a reconstructed block generating unit configured to generate reconstructed samples to generate the reconstructed picture based on the prediction samples and the residual samples,
- wherein the picture includes multiple largest coding units (LCUs),
- wherein a number of the substreams is equal to a number of LCU rows in the current slice segment in the picture,
- wherein the entry point information includes number information indicating a number of entry point offsets, and
- wherein the number of the substreams is derived based on the number information in the slice header.
8 more elements
A video encoding apparatus, comprising:
- an encoder configured to encode substreams for a current slice segment in a picture, and to generate a bitstream including information on a slice header and information on substreams for the current slice segment, wherein the slice header includes entry point information for the sub streams,
- wherein the picture includes multiple largest coding units (LCUs),
- wherein a number of the substreams is equal to a number of LCU rows in the current slice segment in the picture,
- wherein the entry point information includes number information indicating a number of entry point offsets, and
- wherein the number of the substreams is derived based on the number information in the slice header.
2 more elements
A non-transitory decoder-readable storage medium storing a bitstream comprising a decoder executable program, the decoder executable program, when executed, causing a decoder to perform the following steps:
- obtaining entry point information for substreams from a slice header, wherein the bitstream including information on the slice header and information on the substreams for a current slice segment,
- decoding the substreams based on the entry point information to reconstruct a picture;
- wherein decoding the substreams includes:
- deriving prediction information and residual information on a block of a current substream;
- deriving prediction samples on the block based on the prediction information;
- deriving residual samples on the block, wherein the residual samples are derived based on the residual information;
- generating reconstructed samples to generate the reconstructed picture based on the prediction samples and the residual samples,
- wherein the picture includes multiple largest coding units (LCUs),
- wherein a number of the substreams is equal to a number of LCU rows in the current slice segment in the picture,
- wherein the entry point information includes number information indicating a number of entry point offsets, and
- wherein the number of the substreams is derived based on the number information in the slice header.
8 more elements
Dependencies are inferred from the claim text.