Taking a SEM image of the machined surface as an example, its edge can be extracted by using the local maximum of wavelet s coefficients, and thus the characteristics of a machined surface can be achieved.
图像边缘是图像的重要特征 ,提出了一种基于小波变换的图像多尺度边缘检测算法 ,并以机加工表面SEM图像为对象 ,利用小波系数局部极大(值)提取其边缘 ,实现机加工表面纹理特征提取。
The sharp variation of gray levels of an image, measured at different scales, can be detected from the local maxima of its wavelet transform.
在不同尺度下图像突变点可以通过它的小波变换局部极大(值)来检测。
By handling the wavelet transform coefficient modulus in the domain of wavelet transform, and determining the local maxima of the wavelet transform coefficient modulus, it provides information of the image boundaries features.
基于信号与噪声在不同尺度下小波变换系数模不同的变化特征，提出了一种边缘检测方法，该方法通过对图像的小波变换域中由噪声引起的小波变换系数模进行处理，再利用小波变换系数模局部极大(值)来提取图像的边缘特征，实验结果说明这种特征提取方法可以有效地降低噪声，同时又较准确地提取出图像的边缘。
Relationship between local recurrence and distant metastases in human breast cancer;
乳腺癌局部复发与远处转移关系的回顾性分析
Lipid emulsion:a new remedy for cardiac toxicity induced by local anesthetics;
脂肪乳剂——局部麻醉药心脏毒性反应救治的新发现
Application of local anaesthesia in tension-free inguinal hernia repair;
局部麻醉在腹股沟疝无张力修补术中的应用
The importance of pedestrian street in urban partial renewal;
步行街在城市局部更新中的重要作用
Discussion of processing methods in borer-probe trough checking and partial basement problems;
关于钎探验槽和地基局部问题处理方法的探讨
A Kind of Fractals Based on Part of Real Number;
一类基于实数局部的分形
Analysis of the Effectiveness of Regional Infusion Combinated Hypotonic Intraperitoneal Chemohyperthermia for Prevention of Recurrence and Metastasis After Radical Recection of Gastric Carcinoma;
局部灌注结合腹腔低渗热化疗预防胃癌复发和转移的疗效分析
3-D Echocardiographic Evaluation of LV Regional Function in Patients with Myocardial Infarction;
三维超声心动图评价心肌梗死患者左室局部心功能
CT perfusion imaging and stages of regional cerebral hypoperfusion in pre-infarction period;
脑梗死前期脑局部低灌注的CT灌注成像表现及分期
Three-dimensional finite element analysis of stress distribution on the edentulous mucosa of separate removable partial denture and traditional removable partial denture;
分割式及普通可摘局部义齿缺牙区黏膜的三维有限元分析
Three-dimensional finite element analysis of SD attachment retained distal-extension removable partial denture;
SD附着体固位远中游离端可摘局部义齿三维有限元应力分析
Experience in removable partial splint dentures for elderly patients;
老年人夹板式可摘局部义齿设计体会