【摘要】 从算子理论的角度阐明了对于一给定信号可用框架的有限子族按任意精度逼近；提出了基于非正交函数系的图象自适应表示算法．该算法可有效地表示新信号的局部特征及能量分布．作者以Ｇａｕｓｉａｎ基函数为例对二维图象进行了实验．更多还原

【Abstract】 We expounded that one given signal can be approximated in arbitrary accuracy by a finite sub family of a frame.And suggested an adaptive algorithm of representation for images based on nonorthogonal basis functions.The algorithm may efficiently represent the local features and the energy distribution.更多还原