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1.If a scalar field changes slowly, it resembles a constant, both in its fixed magnitude and in its lack of directionality; relativity theory predicts it will produce a gravitational repulsion.
如果纯量场变化缓慢，它就会有固定的大小，而且没有方向性，就像一个常数一样；相对论预测，这种情况会产生重力排斥效应。收藏指正
2.But multiwavelet theory comes out only recently, so the application area is less than scalar wavelet. Especially image edge detection bases on multiwavelet, which is not popular. It applies multiwavelet theory into image edge detection by dig character of multiwavelet coefficients, puts forward three methods of edge detection basing on multiwavelet constant threshold、adaptive threshold and biggest model value.
但是,由于多小波理论是最近几年才发展起来的,应用范围不及小波理论,特别是将多小波变换用于图像边缘检测还不多见,本文通过挖掘多小波系数的特征,将多小波这一理论应用于图像边缘的检测,提出了基于多小波变换的恒定阈值、自适应阈值和最大模值的三种边缘检测方法。收藏指正
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