发明名称 IMAGE CODER
摘要 <p>PURPOSE: To obtain a quantization width to obtain a desired code quantity at a high speed by selecting a quantization width estimate section based on a difference between an object code quantity and a code quantity obtained by a variable length coding section and data stored in a coding result storage section or the like. CONSTITUTION: An estimate system selection section 60 gives coding result data 180 to a coding result storage section 70. The content of the data 180 consists of a set of a used quantization width and a resulting total code quantity. The data are included in control data 170 and sent from a control section 50 to a selection section 60. The selection section 60 selects a best estimate system while reading data stored in a storage section 70 at need. Furthermore, the selection section 60 sends an execution instruction or required data to a 1st quantization width estimate section 80 or a 2nd quantization width estimate section 90 executing the selected estimate system as control data 200 or 220. Quantization data used for quantization processing are sent from the estimate section 80 or 90 to a quantization section 20 as quantization width data 210 or 230.</p>
申请公布号 JPH08102943(A) 申请公布日期 1996.04.16
申请号 JP19940237708 申请日期 1994.09.30
申请人 FUJI XEROX CO LTD 发明人 YOKOSE TARO;ANDO AKIHIRO;KIMURA SHUNICHI;KUNITAKE SETSU;KOSHI YUTAKA;UESAWA ISAO
分类号 G06T9/00;H03M7/30;H03M7/36;H03M7/40;H04N1/41;H04N19/126;H04N19/134;H04N19/146;H04N19/189;H04N19/196;H04N19/423;H04N19/60;H04N19/625;H04N19/85;H04N19/91;(IPC1-7):H04N7/30 主分类号 G06T9/00
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