基于小波的曲线任意放大

Enlarge Curves Arbitrarily Based On Wavelet

文章利用小波多分辨理论,提出了任意比例放大曲线的方法。该算法简单,放大后的曲线失真小且比较光滑。同时,在理论上讨论了适于放大缩小曲线的小波基应具有的特征。理论和实验结果均说明双正交B样条小波和半正交B样条小波具有较好的几何特征,适于本文算法。

Based on wavelet multiresolution theory, an algorithm was put forward to enlarge curves arbitrarily and smoothly. This method calculates simply, after using appropriate wavelet function, the curve can be enlarged non-anamorphicly by this algorithm. This paper also discusses the characters of appropriate wavelet function for this algorithm. The theory and results both show that bi-orthogonal B-spline wavelets and semi-orthogonal B-spline wavelets have better geometrical characters and are appropriate to the algorithm.