摘要
主要介绍对边界像素进行约束来恢复画面中块的方法。这种方法基本假设前提是如果对块中丢失和它的边界像素进行DCT变换,含高频成分系数归化为零,这样就可以得到一系列线性方程,通过对这些方程求解就可以求出丢失的像素的近似值。这种方法只需对八个边界像素进行运算。
An efficient method is presented to restore a block in an image, using a reduced set of border pixels. The basic assumption is that, if the set of pixels consisting of the missing block and its boder pixels is transformed by the DCT, the high frequency coefficients obtained can be set to zero. A systen of linear equation results, whose solution yields approximations for the values of the lost pixels. In this interpolation scheme, only eight border pixels are used in the compulation of any missing pixel.
出处
《微机发展》
2003年第4期56-58,共3页
Microcomputer Development
