公开(公告)号：EP1672929A3

公开(公告)日：2012-01-25

申请号：EP05025155.2

申请日：2005-11-17

申请人： Microsoft Corporation

发明人： Tu, Chengjie ,  Malvar, Henrique, Sarmento ,  Srinivasan, Sridhar

IPC分类号： H04N7/26 ,  H04N7/30 ,  H04N7/50 ,  G06F17/14 ,  G10L19/14 ,  G10L19/00 ,  G10L19/02

CPC分类号： G10L19/0017 ,  G06F17/147 ,  G10L19/0212 ,  H04N19/119 ,  H04N19/122 ,  H04N19/60 ,  H04N19/61 ,  H04N19/63 ,  H04N19/80 ,  H04N19/86

摘要： An efficient lapped transform is realized using pre- and post-filters (or reversible overlap operators) that are structured of unit determinant component matrices. The pre-and post-filters are realized as a succession of planar rotational transforms and unit determinant planar scaling transforms. The planar scaling transforms can be implemented using planar shears or lifting steps. Further, the planar rotations and planar shears have an implementation as reversible/lossless operations, giving as a result, a reversible overlap operator.

公开(公告)号：EP1672929A2

公开(公告)日：2006-06-21

申请号：EP05025155.2

申请日：2005-11-17

申请人： Microsoft Corporation

发明人： Tu, Chengjie ,  Malvar, Henrique, Sarmento ,  Srinivasan, Sridhar

IPC分类号： H04N7/26

CPC分类号： G10L19/0017 ,  G06F17/147 ,  G10L19/0212 ,  H04N19/119 ,  H04N19/122 ,  H04N19/60 ,  H04N19/61 ,  H04N19/63 ,  H04N19/80 ,  H04N19/86

摘要： An efficient lapped transform is realized using pre- and post-filters (or reversible overlap operators) that are structured of unit determinant component matrices. The pre-and post-filters are realized as a succession of planar rotational transforms and unit determinant planar scaling transforms. The planar scaling transforms can be implemented using planar shears or lifting steps. Further, the planar rotations and planar shears have an implementation as reversible/lossless operations, giving as a result, a reversible overlap operator.

摘要翻译： 使用由单位行列式组件矩阵构成的前置和后置滤波器（或可逆重叠运算符）来实现有效的重叠变换。 前置滤波器和后置滤波器被实现为一系列平面旋转变换和单位行列式平面缩放变换。 平面缩放变换可以使用平面剪切机或提升步骤来实现。 此外，平面旋转和平面剪切具有作为可逆/无损操作的实现，从而给出可逆重叠操作器。