发明名称 |
Methods and devices for filtering and coding a digital signal |
摘要 |
To filter a digital signal, in which, for each sample of the signal, a plurality of context functions take account of a predetermined number of other samples of the signal: the value of a context function from the plurality of context functions for each sample to be filtered is calculated; the signal is divided into a set of sub-signals corresponding respectively to the different values of the context functions; and, for each sub-signal: an optimal filter is determined according to a first criterion that depends on the values of the sub-signal; and the optimal filter is associated with the context function corresponding to the sub-signal. Application to the coding of a digital signal representing an image.
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申请公布号 |
US8588539(B2) |
申请公布日期 |
2013.11.19 |
申请号 |
US20090389587 |
申请日期 |
2009.02.20 |
申请人 |
HENRY FELIX;COROUGE ISABELLE;CANON KABUSHIKI KAISHA |
发明人 |
HENRY FELIX;COROUGE ISABELLE |
分类号 |
G06K9/36;G06K9/40;G06K9/46 |
主分类号 |
G06K9/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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