例句與造句

1. First we introduce theory and merits of graphic wavelet transform , then mallat algorithm , multi - scale characteristic , quadratic b - alpine wavelet and the coefficients of this filters , and etc . later we calculate the gradient matrix based on the result of wavelet transform , thin the contour and get spatical information
   先介紹圖像小波分解方法的原理、 mallat快速算法、多尺度特性、 3階b -樣條小波基函數(shù)的選取及其濾波器系數(shù)的推導(dǎo)等，然后根據(jù)小波變換結(jié)果計算梯度矢量矩陣，進(jìn)行非極大值抑制和雙閾值化，提取目標(biāo)輪廓。
2. It's difficult to find gradient matrix in a sentence. 用gradient matrix造句挺難的