发明名称 |
Quantizing image data in image compression. |
摘要 |
<p>A video image encoder estimates a quantization noise curve which will result from quantizing a coefficient data block and uses the estimated quantization noise curve and a specified minimum noise value to select the quantization step size actually used to quantize the coefficient data block. The quantization step size is also selected as a function of transmission buffer occupancy so as to limit the amount of encoded data to a predetermined rate. <IMAGE></p> |
申请公布号 |
EP0680221(A2) |
申请公布日期 |
1995.11.02 |
申请号 |
EP19950302153 |
申请日期 |
1995.03.30 |
申请人 |
SONY CORPORATION |
发明人 |
OHTSUKI, TOMOYUKI, C/O INTELL.PROP.DIV.SONY CORP. |
分类号 |
G06T9/00;H04N7/26;H04N7/30;H04N7/50;(IPC1-7):H04N7/50 |
主分类号 |
G06T9/00 |
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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