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 |
US9560368(B2) |
申请公布日期 |
2017.01.31 |
申请号 |
US200913132426 |
申请日期 |
2009.11.27 |
申请人 |
Hitachi Maxell, Ltd. |
发明人 |
Takahashi Masashi;Yamaguchi Muneaki;Ito Hiroaki;Fujita Takehiro |
分类号 |
H04N7/26;H04N19/44;H04N19/52;H04N19/51 |
主分类号 |
H04N7/26 |
代理机构 |
Crowell & Moring LLP |
代理人 |
Crowell & Moring LLP |
主权项 |
1. A moving picture decoding method for using an inter prediction process, the method comprising:
a first step to receive encoded information of a target block to be decoded by the 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 whether the target block is encoded by a motion-vector combined area mode or not; a fourth step to determine a motion vector for the target block, wherein when the target block is encoded by the motion-vector combined area mode, the motion vector for the target block is 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; a fifth step to generate a prediction image for the target block by using the determined motion vector; and a sixth step to generate a decoded image of the target block based on the prediction image generated in the fifth step and the prediction difference data decoded in the second step. |
地址 |
Ibaraki-shi JP |