View source for US Patent Application 18346704. IMAGE ENCODING AND DECODING METHOD USING BIDIRECTIONAL PREDICTION, AND IMAGE ENCODING AND DECODING APPARATUS simplified abstract

=IMAGE ENCODING AND DECODING METHOD USING BIDIRECTIONAL PREDICTION, AND IMAGE ENCODING AND DECODING APPARATUS=


==Organization Name==

[[Samsung Electronics Co., Ltd.]]


==Inventor(s)==

[[Seungsoo Jeong of Suwon-si (KR)]]


[[Gahyun Ryu of Suwon-si (KR)]]


[[Minsoo Park of Suwon-si (KR)]]


[[Minwoo Park of Suwon-si (KR)]]


[[Kiho Choi of Suwon-si (KR)]]


[[Narae Choi of Suwon-si (KR)]]


[[Woongil Choi of Suwon-si (KR)]]


[[Anish Tamse of Suwon-si (KR)]]


[[Yinji Piao of Suwon-si (KR)]]


==IMAGE ENCODING AND DECODING METHOD USING BIDIRECTIONAL PREDICTION, AND IMAGE ENCODING AND DECODING APPARATUS - A simplified explanation of the abstract==


This abstract first appeared for US patent application 18346704 titled 'IMAGE ENCODING AND DECODING METHOD USING BIDIRECTIONAL PREDICTION, AND IMAGE ENCODING AND DECODING APPARATUS

==Simplified Explanation==

The patent application describes an image decoding method that involves bi-directional prediction of a current block using two reference blocks.
* The method obtains a first reference block and a second reference block for the prediction.
* Weight information for combining the reference blocks is obtained from a bitstream.
* Entropy decoding is performed on the weight information to obtain a weight index.
* The first reference block is combined with the second reference block based on a candidate value indicated by the weight index.
* The current block is reconstructed based on the result of the combining.
* The weight index is entropy-decoded using a context model for the first binary value, and a bypass method for the remaining binary value.


==Original Abstract Submitted==

Disclosed is an image decoding method according to an embodiment, the image decoding method including: obtaining a first reference block and a second reference block, for bi-directional prediction of a current block; obtaining, from a bitstream, weight information for combining the first reference block with the second reference block; performing entropy decoding on the weight information to obtain a weight index; combining the first reference block with the second reference block according to a candidate value indicated by the weight index among candidate values included in a weight candidate group; and reconstructing the current block based on a result of the combining, wherein a first binary value corresponding to the weight index is entropy-decoded based on a context model, and the remaining binary value corresponding to the weight index is entropy-decoded by a bypass method.