发明名称 |
IMAGE SIGNAL CODING METHOD AND DECODING MEHOD, INFORMATION SOURCE CODING METHOD AND DECODING MEHOD, DEVICES FOR THEM, THEIR PROGRAMS, AND MEMORY MEDIUM WITH RECORDED PROGRAM |
摘要 |
<p>An information source encoding method for encoding a Gaussian integer signal includes the steps of: inputting a signal value sequence of a Gaussian integer signal as an encoding target; transforming signal values included in the input signal value sequence into integer pairs, each having two integers, arranged in the input order; regarding each of the integer pairs as a lattice point on two-dimensional coordinates, and obtaining integer values greater than or equal to zero by performing a two-dimensional-to-one-dimensional mapping in which the shorter the distance from each lattice point to the origin, the smaller the value assigned to the lattice point by the mapping; and encoding the integer values using codes which are used for encoding an information source that follows an exponential distribution.</p> |
申请公布号 |
EP2083560(A1) |
申请公布日期 |
2009.07.29 |
申请号 |
EP20070831450 |
申请日期 |
2007.11.08 |
申请人 |
NIPPON TELEGRAPH & TELEPHONE CORPORATION |
发明人 |
TAKAMURA, SEISHI |
分类号 |
H04N1/41;G06T9/00;H03M7/40;H03M7/42;H03M7/46;H04N19/00 |
主分类号 |
H04N1/41 |
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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