But tensor product wavelets has a number of drawbacks .
张量积小波有其自身的缺点。
When a puff of wind ruffles the surface , wavelets disturb the surface and the reflections disappear .
一阵风掠过水面，微波打乱了水面，倒影也不见了。
Small trees in leaf begin to sway ; crested wavelets form on inland waters .
有叶的小树摇摆，内陆的水面有微波。
In essence , we need a way to change scale at various points , and scale is at the heart of wavelets .
本质上，我们需要一种能在不同点上改变尺度的方法，而尺度就是小波的核心。
Feng xiangchu , male , born in 1962 , professor , ph.d. supervisor . His main research interests include image processing , the theory of pdes and its application , wavelets and its applications .
