公开(公告)号：EP0705040A3

公开(公告)日：1997-10-22

申请号：EP95306815.2

申请日：1995-09-27

申请人： SONY CORPORATION

发明人： Suzuki, Kazuhiro, c/o Int. Property Division ,  Mitsuhashi, Satoshi, c/o Int. Property Division ,  Ando, Yuji, c/o Int. Property Division

IPC分类号： H04N7/30

CPC分类号： H04N19/87 ,  H04N19/107 ,  H04N19/114 ,  H04N19/124 ,  H04N19/14 ,  H04N19/142 ,  H04N19/146 ,  H04N19/149 ,  H04N19/15 ,  H04N19/172 ,  H04N19/176 ,  H04N19/177 ,  H04N19/179 ,  H04N19/60 ,  H04N19/61

摘要： The apparatus for encoding a picture includes a picture data storage unit, a picture information evaluating unit, an inter-picture correlation detection unit, an orthogonal transform unit for orthogonally transforming the picture data for generating orthogonal transform coefficients, a quantization unit for quantizing the orthogonal transform coefficients produced by the orthogonal tranform unit at a pre-set quantization step, an adaptive compression method selection unit and a quantization step control unit. The information quantity is evaluated from stored picture data of plural pictures, and the inter-picture correlation is detected. A picture data compression method is adaptively selected based upon the evaluated value of the information quantity and the inter-picture correlation information. The basic quantization step is predicted from the evaluated value and a pre-set compressed data quantity obtained on compressing one-picture data by the selected compression method and the evaluated value.

摘要翻译： 一种用于对基本量化步长的预测对图像进行编码的方法和装置。 该装置包括图像信息评估单元，画面间相关检测单元，正交变换单元，用于在预设量化步长下量化正交变换系数的量化单元，自适应压缩方法选择单元和量化步长控制单元 。 从多个图像的存储图像数据评估信息量，并检测画面间相关性。 基于信息量和图像间相关信息的评估值自适应地选择图像数据压缩方法。 从评估值和通过所选压缩方法压缩单画面图像数据获得的预设压缩数据量和评估值来预测基本量化步长。

公开(公告)号：EP0705040B1

公开(公告)日：2002-03-20

申请号：EP95306815.2

申请日：1995-09-27

申请人： SONY CORPORATION

发明人： Suzuki, Kazuhiro, c/o Int. Property Division ,  Mitsuhashi, Satoshi, c/o Int. Property Division ,  Ando, Yuji, c/o Int. Property Division

IPC分类号： H04N7/30

CPC分类号： H04N19/87 ,  H04N19/107 ,  H04N19/114 ,  H04N19/124 ,  H04N19/14 ,  H04N19/142 ,  H04N19/146 ,  H04N19/149 ,  H04N19/15 ,  H04N19/172 ,  H04N19/176 ,  H04N19/177 ,  H04N19/179 ,  H04N19/60 ,  H04N19/61

公开(公告)号：EP0705040A2

公开(公告)日：1996-04-03

申请号：EP95306815.2

申请日：1995-09-27

申请人： SONY CORPORATION

发明人： Suzuki, Kazuhiro, c/o Int. Property Division ,  Mitsuhashi, Satoshi, c/o Int. Property Division ,  Ando, Yuji, c/o Int. Property Division

IPC分类号： H04N7/30

CPC分类号： H04N19/87 ,  H04N19/107 ,  H04N19/114 ,  H04N19/124 ,  H04N19/14 ,  H04N19/142 ,  H04N19/146 ,  H04N19/149 ,  H04N19/15 ,  H04N19/172 ,  H04N19/176 ,  H04N19/177 ,  H04N19/179 ,  H04N19/60 ,  H04N19/61

摘要： The apparatus for encoding a picture includes a picture data storage unit, a picture information evaluating unit, an inter-picture correlation detection unit, an orthogonal transform unit for orthogonally transforming the picture data for generating orthogonal transform coefficients, a quantization unit for quantizing the orthogonal transform coefficients produced by the orthogonal tranform unit at a pre-set quantization step, an adaptive compression method selection unit and a quantization step control unit. The information quantity is evaluated from stored picture data of plural pictures, and the inter-picture correlation is detected. A picture data compression method is adaptively selected based upon the evaluated value of the information quantity and the inter-picture correlation information. The basic quantization step is predicted from the evaluated value and a pre-set compressed data quantity obtained on compressing one-picture data by the selected compression method and the evaluated value.

摘要翻译： 用于编码图像的装置包括图像数据存储单元，图像信息评估单元，图像间相关检测单元，用于正交变换用于产生正交变换系数的图像数据的正交变换单元，用于量化正交变换系数的量化单元 由预定量化步骤由正交变换单元产生的变换系数，自适应压缩方法选择单元和量化步长控制单元。 从多个图像的存储图像数据评估信息量，并检测画面间相关性。 基于信息量和图像间相关信息的评估值自适应地选择图像数据压缩方法。 从评估值和通过所选择的压缩方法压缩单画面数据获得的预设压缩数据量和评估值来预测基本量化步长。