发明名称 |
CODING AND DECODING METHOD FOR IMAGES OR VIDEOS |
摘要 |
A coding and decoding method for images or videos is provided by embodiments of the present invention to improve coding and decoding efficiency. The method includes: establishing a visual dictionary, wherein, the visual dictionary includes one or more visual words; extracting features from a specific object in an image; determining whether there is a visual word in the visual dictionary matching the specific object by using a feature matching method; obtaining the index of the visual word matched and a geometric relationship between the specific object and the visual word matched, wherein, the geometric relationship is represented by a project parameter; entropy coding the index of the visual word matched and the project parameter instead of entropy coding the specific object. |
申请公布号 |
US2015131921(A1) |
申请公布日期 |
2015.05.14 |
申请号 |
US201414534780 |
申请日期 |
2014.11.06 |
申请人 |
Peking University |
发明人 |
Huang Tiejun;Gao Wen;Ma Siwei |
分类号 |
H04N19/20;H04N19/44;H04N19/91 |
主分类号 |
H04N19/20 |
代理机构 |
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代理人 |
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主权项 |
1. A coding method for images or videos, comprising:
establishing a visual dictionary, wherein, the visual dictionary comprises one or more visual words; extracting features from a specific object in an image; determining whether there is a visual word in the visual dictionary matching the specific object by using a feature matching method; obtaining the index of the visual word matched and a geometric relationship between the specific object and the visual word matched; wherein, the geometric relationship is represented by a project parameter; entropy coding the index of the visual word matched and the project parameter instead of entropy coding the specific object. |
地址 |
Beijing CN |