公开(公告)号：US5161001A

公开(公告)日：1992-11-03

申请号：US282451

申请日：1988-12-09

申请人： Daniele Pele ,  Bruno Choquet

发明人： Daniele Pele ,  Bruno Choquet

IPC分类号： H04N7/015 ,  H04N7/12

CPC分类号： H04N7/0152 ,  H04N7/125

摘要： Disclosed is a method to achieve a sub-sampling of pictures, making it possible to optimize the spatial and temporal definition of the compressed signal, so as to enable a most faithful possible reconstruction of the picture received with said compressed picture signal and, if necessary, with complementary assistance data. A field of speed vectors is defined for at least each picture to be sub-sampled, and said pictures to be sub-sampled are sub-sampled by eliminating certain picture points, the preserved picture points being chosen so as to avoid selecting a picture point which corresponds spatially to the approximate projection of a source point preserved during the sub-sampling of the preceding sub-sampling picture, said projection resulting from the application, to said source point, of the associated shift vector.

摘要翻译： 公开了一种实现图像的次采样的方法，使得可以优化压缩信号的空间和时间定义，以便能够对所述压缩图像信号所接收的图像进行最忠实的可能重建，并且如果需要 ，补充援助数据。 为至少每个要被子采样的图像定义速度矢量的场，并且通过消除某些图像点来对要被子采样的所述图像进行子采样，选择保留的图像点以避免选择图像点 其在空间上对应于在先前的子采样图像的子采样期间保留的源点的近似投影，所述投影从所述应用产生的相关移位向量的所述源点。

公开(公告)号：US4989087A

公开(公告)日：1991-01-29

申请号：US284390

申请日：1988-12-14

申请人： Daniele Pele ,  Bruno Choquet

发明人： Daniele Pele ,  Bruno Choquet

IPC分类号： H04N7/26 ,  G06T7/20 ,  H04N7/015

CPC分类号： H04N7/0157 ,  G06T7/2066

摘要： A method for the estimation of the motion of electronic picture points, in the plane of the picture, by means of fast, convergent and adaptive processing, notably in order to enable subsequent, efficient processing, by sub-sampling, of the picture sequence without harming the psycho-visual quality of the picture reconstructed from the sub-sampled picture. To each electronic picture point, there is assigned a displacement vector, computed according to a WALKER and RAO type of algorithmic process of prediction/correction, the predicted value of motion of the current point being the value of the original displacement vector associated with a point of origin of the preceding picture, so that said current point is the approximate projection of said point of origin along said original displacement vector.

摘要翻译： 一种用于通过快速，收敛和自适应处理在图像平面中估计电子图像点的运动的方法，特别是为了通过对图像序列进行子采​​样来实现后续的，有效的处理，而没有 损害从次采样图像重建的图像的心理视觉质量。 对于每个电子图像点，分配了根据预测/校正的算法过程的WALKER和RAO类型计算的位移矢量，当前点的运动的预测值是与点相关联的原始位移矢量的值 使得所述当前点是所述原始位移矢量的所述原点的近似投影。