摘要
数字图象的线性变换在计算机视觉、图象处理、模式识别和计算机图形学等领域有着广泛的应用．在实数域中这种变换可以提供连续的一一映射．然而，由于图象象素是离散的，常常导致变换结果出现不如意的孔洞，破坏了变换后图象的质量，给进一步的处理和识别过程带来困难．本文提出了基于点辖域进行数字图象离散线性变换的一种新方法．该方法突破了现有算法只适用于平移、比例、旋转变换的局限，在更一般的意义下讨论了数字图象的离散线性变换．实验结果表明，本文的方法可以消除变换后图象的孔洞，结果更加真实、有效．
In this paper, a new method for discrete linear transformations of digital images is presented which is based upon the new concept of point-governed region. This method can break through the limitations of the methods now available which are suitable only for the transformations of translation, rotation, and scaling. The method can be used under general linear transformations while eliminating superfluous holes of the transformed images. Hence, the transformation results become more consistent and accurate. Experimental results show the efficiency of the method.
出处
《计算机学报》
EI
CSCD
北大核心
1996年第12期903-908,共6页
Chinese Journal of Computers
基金
国家自然科学基金
关键词
数字图象
离散线性变换
点辖域
图象处理
Digital images, discrete linear transformation, point-governed region.
