发明名称 |
Moving Picture Decoding Method and Moving Picture Encoding Method |
摘要 |
High-quality video is provided using a small amount of coded bits. The moving picture decoding method performs inter-frame prediction processing. With the aforementioned inter-frame prediction processing, blocks with similar motion vectors from among the motion vectors in multiple blocks that have already been decoded are combined and a combined area is computed. A predicted vector for a target block to be decoded is computed using the motion vector of the aforementioned combined area, and a motion vector for the aforementioned target block is computed based on the aforementioned predicted vector and a difference vector which is included in a coded stream that is input. A predicted image is generated using the aforementioned motion vector, and a difference image which is included in the aforementioned coded stream and the aforementioned predicted image are added to generate a decoded image. |
申请公布号 |
US2017099497(A1) |
申请公布日期 |
2017.04.06 |
申请号 |
US201615383421 |
申请日期 |
2016.12.19 |
申请人 |
Hitachi Maxell, Ltd. |
发明人 |
TAKAHASHI Masashi;YAMAGUCHI Muneaki;ITO Hiroaki;FUJITA Takehiro |
分类号 |
H04N19/52;H04N19/13;H04N19/124;H04N19/159;H04N19/61 |
主分类号 |
H04N19/52 |
代理机构 |
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代理人 |
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主权项 |
1. A moving picture decoding method comprising:
a first step to receive encoded information of a target block to be decoded by an inter prediction process, the encoded information being encoded without a frequency transform process; a second step to decode prediction difference data of the target block from the encoded information without the frequency transform process; a third step to determine by which prediction mode the target block is encoded; a fourth step to generate a prediction image by the prediction mode determined by the third step, wherein if the target block is encoded by an intra prediction mode, a prediction image is generated by the intra prediction mode, and wherein if the target block is encoded by a motion-vector combined area mode, the prediction image is generated by using a motion vector determined so as to be in common with a motion vector of an adjacent block adjacent to the target block without adding a difference vector, based on a status of motion vectors of a plurality of adjacent blocks adjacent to the target block; and a fifth step to generate a decoded image of the target block based on the prediction image generated in the fourth step and the prediction difference data decoded in the second step. |
地址 |
Osaka JP |