发明名称 |
Verfahren und Vorrichtung zur Ratenreduktion für Bildaufzeichnung |
摘要 |
PCT No. PCT/FR93/01076 Sec. 371 Date May 3, 1995 Sec. 102(e) Date May 3, 1995 PCT Filed Oct. 29, 1993 PCT Pub. No. WO94/10800 PCT Pub. Date May 11, 1994A method comprising breaking an image down into sub-bands, performing a pre-analysis of the image in image blocks, recursively and adaptively assigning the available bit-rate to each pixel in the sub-bands, selecting a quantizer determined by the source probability density and a calculation of the minimum quantizing error variance, and coding each pixel of each signal component in every sub-band according to the selected quantizer. The method is applicable to HDTV digital VCRs. |
申请公布号 |
DE69322879(T2) |
申请公布日期 |
1999.06.24 |
申请号 |
DE1993622879T |
申请日期 |
1993.10.29 |
申请人 |
THOMSON MULTIMEDIA, BOULOGNE, CEDEX, FR |
发明人 |
GUILLOTEL, PHILIPPE, THOMSON-CSF SCPI, F-92402 COURBEVOIE CEDEX, FR;TOURTIER, PHILIPPE, THOMSON-CSF SCPI, F-92402 COURBEVOIE CEDEX, FR |
分类号 |
H04N7/26;(IPC1-7):H04N7/24 |
主分类号 |
H04N7/26 |
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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