轮廓

Analyzing through the Maar transformation Image's character , a way of measuring margin of intricate object was to be brought forward by setting new estimation rule . As an essential and important type of volcanic activity on earth , phreato ma gmatic eruption is characterized by groundwater-related explosive eruption and subsequent base surge deposit and maar lakes .

通过对 Maar 变换后图像特征的深入分析，设置新的判断准则，提出了一种针对复杂物体边缘检测的算法流私，可以对具有&尖锐角&的物体轮廓进行快速准确地提取，同时利用矢量化方法消除毛刺，使跟踪获得的边界更符合物体的实际轮廓特征。

This project focuses on the stereovision measurement techniques of measuring geometric parameters on train wheel profile.

测量系统采用线激光投射到车轮踏面轮廓上，通过左、右CCD摄像机系统的拍摄和图象采集得到车轮轮廓的激光曲线图。

Compared with the two dimension FD, the methos are fast and simple,the experiment result shows it is feasible to classify manmade targets and natural objects by the FD of the rough profile of contour.

实验表明，水杯及车辆轮廓的分形维数较低，岩石则具有较高的分形维数，通过同二维结果的对比，从计算量和分形维数两方面证明用所提出的算法计算轮廓分形维数区别人工目标和自然物体是可行的。

Then the contour was smoothened and fitted by using adaptive cubic B-spline, which adjusts the distribution of control points adaptively according to the contour curvature.

然后用一种自适应3次B样条对获得的轮廓线进行修饰和平滑处理。该样条可根据轮廓线不同处的曲率变化情况，自适应地调整控制点的分布。

On the other hand, in the profile detecting area, various kinds of surface profilers and optical profilers have also been used widely.

在轮廓测量方面，各类表面台阶仪、光学轮廓仪也正广泛应用于生产和科研之中。

Considering this disadvantage of contourlet transform and its application in image fusion, a novel algorithm of image fusion was preposed based on Nonsubsampled Contourlet Transform.

针对轮廓波变换的这一不足，提出了一种基于非抽样轮廓波变换的图像融合算法。

Based on the separation technique of address and display, the subfields with higher weight value playing an important role in producing the dynamic false contour are divided into several subfields with lower weight value. The addressing method of accumulation lighting is adopted for the divided subfields. By comparing the gray statistic of input image with the preset gray level thresholds, the operating situation of the dismantled subfield is dynamically determined so as to reduce efficiently the false contour phenomenon without influencing the picture luminance.

该技术基于寻址与显示分离技术，将对产生动态假轮廓起重要作用的权值较大子场拆分为若干个权值较小的子场，并对拆分的子场使用累积发光的寻址方式，利用输入图像灰度统计与预置的灰度阈值比较，动态地确定拆分子场的使用情况，在不影响图像显示亮度的情况下有效地减小了动态假轮廓现象。

Gradually narrowing toward the tip, they are shaped somewhat like a vine leaf and are lightly feathered.

脑袋的轮廓与口吻的轮廓略微有点不平行，但是不很向下倾斜，造成&下斜脸&的倾向。

On applying the theory of differential geometry, the research shows the procedure for determining the required cutter path for cutting conical cam profile using a NC milling machine based on the analytical profile expression of conical cam with oscillation conical roller follower or with a translating conical roller follower established in 3D space. The analytical expression of cutter path is provided for a tapered endmill cutter, whose size may be identical to or smaller than that of the conical roller.

应用微分几何理论，以在3维空间所建立的圆锥滚子摆动从动件和直动从动件圆锥凸轮机构凸轮廓面的解析表达式为基础，对数控铣床加工圆锥凸轮廓面所需刀具轨迹方程的建立方法进行了研究，根据所采用的锥形刀尺寸等于或小于圆锥滚子尺寸的情况，推导出相应的刀具轨迹方程的解析表达式。

The measuring method of 1-D thread image is discussed based on that of 2-D image. The points on tooth contour gathered by edge detection are fitted to lines, and the tooth's size can be calculate from fitted contour.

在原有二维螺纹图像测量理论的基础上，本文对一维图像的测量方法进行了探讨，根据螺纹轮廓的信号直接采集型值点参与拟合计算，以拟合轮廓进行尺寸计算。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐