To compare with well-known edge detectors, this approach not only detects real boundary of image, but also effectively suppresses the false edge of image. This new approach receives a good effect.
通过与经典的边缘算子相比较，该方法不仅能很好地检测出图像的真实边缘，而且有效地抑制了虚假边缘的产生，取得了良好的效果。
In this third part, we will try to get a better understanding of the leading edge high lift devices, boundary layer control and stall.
在这第三部分，我们将设法得到更好地了解该领域的领先优势，高扬程设备，边界层控制和摊档。
The main results in this paper as follows: First, a prototype of a shape-based image database retrieval system is completed, it can receive the query mode both by giving an example image and by sketching the desired object on the screen, Second, five shape-based image retrieval methods are realized; Third, an algorithm based on triangulation for shape-based image retrieval is brought forward. In this algorithm, firstly, the edge of the original image is followed and the candidate corners in the original image are detected. Then the counterpoints of the candidate corners in the result of edge follow are found, and the boundary corners whose counterpoints have been found are queued in the order of their counterpoints in edge follow. After these steps, the boundary corners are triangulated and triangles are obtained which can show the true shape of the original image. Finally, shape feature is obtained by calculating the angle histogram of the triangles.
同时本文中主要完成了以下三方面的工作：完成了一个基于形状特征的图象检索的原型系统，可实现例子图象或徒手绘草图两种查询方式；实现了五种利用形状特征进行图象检索的具体方法，并对其进行了分析比较；并且在继承将三角剖分引入形状检索的思想基础上提出了利用三角剖分进行形状检索的一种新算法：先对原图象进行边界跟踪和角点检测；然后寻找初始角点在边界跟踪中的对应点，并对找到对应点的角点按其对应点在边界跟踪中的顺序进行排序；再对排序后的角点进行德洛内三角剖分，得到能表示目标真实形状的三角形序列；最后计算三角形序列的角度直方图作为形状特征，并进行相似性匹配。
In Jurassic, the western, eastern and northern boundary of the basin had changed in varying degrees, except the south- Qinling orogenic belt rising in Indo-Chinese epoch, which is an always limited boundary. The western of the basin is limited by west-edge thrust nappe belt which formed in early and mid Jurassic.
侏罗纪时，除了盆地的南界为印支期隆起的秦岭造山带外——该造山带一直是一个限定性的边界，其他西部、东部和北部边界都有不同程度变化。
The vortex simulated in this article include the shedding vortex induced by the vane trailing edge boundary layer, the endwall vortex generated by the endwall boundary layer interaction, the passage vortex generated by the rotor rotation, and the leakage vortex generated by the tip clearance flow.
涡轮级内的涡运动包括：导向器叶片尾缘附而层引起的脱落涡；转子通道内转子的旋转运动产生的通道涡；根脚区两个端壁附面层干涉，形成的根脚涡；存在叶尖漏流时，出现的漏流涡。
When injected into the melt, the leading edge of the water forms a solid boundary or highly viscous membrane.
当注入到熔融塑料里，水流的前沿形成一个实实在在的边界或高粘度的膜。
The outer edge of the B ring which forms the inner boundary of the Cassini division is maintained by a gravitational resonance with Mimas. Near the outer edge of the A ring are the Encke Gap (325 kilometers, or 202 miles wide) and the barely visible Keeler Gap (35 kilometers, or 22 miles wide).
形成卡西尼环缝内缘的B环外侧的形状由其与土卫一的引力共振保持。A环外侧是恩克缝（宽325公里，202英里）和勉强能看到的科勒缝（宽35公里，22英里）。
These lists are conceptually the same as those found in other boundary representations such as half-edge, radial edge and partial entity and like these other representations each topological entity is itself a node in the cycles to which it belongs so the memory requirements for storing adjacency information remains minimal.
这些链表和其他的边表示结构的存储是类似的，比如半边，射线边，pe或其他的表示，每个拓扑元素自己在环中都是一个节点，这样就可以得到一个最小的内存需求。最后由 kidux 编辑于 2007年 4月 5日 23：34 星期四，总共编辑了 2 次
A method dealing with the edge restraint condition of the least square method is presented the boundary condition of the surface is corrected, the ground effect that surface acts on the flying vehicle in low Mach number is simulated.
用最小一乘法对N-S方程进行了MUSCI有限体积法的粘性求解，提出了带约束边界条件的最小二乘法的处理办法，修正了下垫面的数值边界条件，模拟了下垫面在低马赫数情况下对飞行器的地面效应作用。
The main results are:(1) infrared photographs provided the distributions of surface temperatures of leaves and the temperatures near the edge of the leaves were lower than that in the middle of the leaves, which agreed with the work of Gates (1976), but the distribution of surface temperature were highly irregular; (2) boundary layer resistance and effective wind speed were calculated from surface temperature, and the horizontal distributions of r〓 and u〓 at different heights within the maize canopy were highly uneven; (3) the effective wind speed over maize leaves calculated from analysis of infrared photographs have been found to vary closely with wind speed measured with anemometer, which shows that the values of boundary layer resistance and effective wind speed deduced from infrared photographs are valid; (4) Average effective wind speeds near the edges of leaves agree well with the wind speeds measured by micrometeorological method; (4) wavelet spectra of wind speeds obtained by using different methods provided pictorial information to support the results of the infrared thermometric measurements.
玉米冠层内设三个高度，每高度各取一张叶片拍摄玉米叶片热像照片，利用改进的Gates边界层阻力公式和能量平衡方程计算玉米叶片表面有效风速和边界层阻力。主要结果有：1，玉米叶片的热像照片所反映的叶片表面温度的平面分布显示，总体上叶片边缘温度较叶片中部温度要低，但表面温度分布极不规则；2，利用热像照片所提供的表面温度分布计算了玉米冠层内不同高度处叶片表面有效风速和边界层阻力的平面分布，它们与T〓的分布具有相似的不规则性；3，从叶片表面温度推算的各层叶片表面边界层以外的平均有效风速与微气象观测的实际风速非常接近，表明通过热像照片推算边界层阻力的方法是可行的；4，相关分析表明各层叶片边缘的平均有效风速与实测风速相关性最好；5，小波分析的结果也表明有效风速与实测风速的小波变换谱是完全一致的，更进一步支持了利用红外观测的表面温度推算边界层阻力方法的可行行。
Some improvement is done on the LOG algorithm to accurately acquire the edge image of blood vessel; a boundary chain code method is also adopted to structure the segmented image.
研究显示，对较严重病变的目测估计要比实际狭窄高出30%，Aschermann等[2]的研究也显示，目测法存在术前高估和术后低估的现象，这对支架直径的选择和
On the other hand, the mirror's ink attracted of moisture in the air, the business card printing and membership card after the mirror effect is not good, to do this, in business card printing and membership card making, mirror ink poured into the screen must be mensurated business card printing and membership card production, in order to complete a smooth business card printing and membership card production, that is, the edge business card printing and membership card production boundary check work piece rate, will give business card printing and membership card making impact effects, such as the heightof, qpart, ink stencil slagging on tours.
另一方面，镜面油墨易吸收空气中的水分，制卡和会员卡制作后得到的镜面效果不好，为此，在制卡和会员卡制作时，镜面油墨倒入网版后必须连续快速制卡和会员卡制作，才能完成顺利制卡和会员卡制作，即是边制卡和会员卡制作边检查工件这种速度，都会给制卡和会员卡制作效果带来影响，例如堵网，油墨印不下去，在网版上结渣团等。
Several edge detection operator of comparison, the paper for the boundary detection algorithm to do useful research.
详细说明：几种边缘检测算子的比较，该论文对于做边界检测的算法研究很有帮助。
The application of the method uses the object's boundary, so the edge detection and segmentation were studied.
应用该方法需要获得目标的有效边界，文中对常用的图像边界提取算法进行了分析。
In image processing, method as follows will be introduced in this paper: a method combining image threshold iterative segmentation with threshold interpolation, edge detection operator Sobel and LoG, edge linking method using delation operator based on mathematical morphology, using boundary tracking and projection method in edge distill process. Through this method, measurement of wheelset will be met precision demand.
本文阐明了图像的分通道自动采集过程，以及对采集到的原始图像进行预处理过程，达到图像去噪声的目标，本课题采用了阈值分割中迭代阈值和阈值插值相结合的方法，Sobel算子、LoG算子边缘检测算法，基于数学形态学的膨胀运算子进行边缘断点连接以及目标提取中的投影法和边缘跟踪方法，使得提取轮对图像边缘达到测量精度的要求。
The theoretical analysis of the diffraction of Fresnel straight-edge is presented in this paper by the boundary wave approach.
本文运用边界波理论对菲涅耳直边衍射问题进行了研究。分别对E偏振和H偏振情况下相应的场分布用边界波理论进行了理论分析和计算，并将它们与严格的电磁理论作了比较。
Caused by machinery, General wrinkles easily excluded, but due to the paper itself factors, such as when the paper moisture content is too large, too small or uneven, creating a tight boundary, such as Lotus Leaf edge, self-crimping paper's and extracranium process is not plain-paper phase refers to certain water content of the paper at a certain temperature and humidity in the shape of the rendered when the wrinkles in, it's not too easy to solve.
由机械引起的皱褶，凡是便当摈斥，但因纸弛自身成分，如当纸弛含水度过不小、过小或不服均时，变成不松外、荷叶外、笔屈等瘪突不服的纸相（纸相是指必定含水度的纸弛在必定的温度和湿度时所表现的轮廓）引起的皱褶，不即不太便当处置了。
This paper studies deeply the boundary theory of wavelet analysis, the theory of cardinal interpolatory wavelet, some applied models of wavelet analysis related to surveying and mapping, the application of wavelet analysis in terms of texture analysis and classification, the edge detection and image reducing. It has gotten a series of important result both in theory and applied field.
本文对小波分析的边界理论和周期基数插值理论、小波分析若干与测绘相关的应用模型、小波分析在影像分析中的纹理分析分类和边缘检测及影像缩小等方面的应用进行了深入研究，取得了一系列重要的理论和应用方面的成果。
All k's we get in this simulation are smaller than that of bulk Si measured in experiment because the mean free path of phonon is limited by the boundaries at the edge of heat source and sink. Specially, I am grateful to my senior, Tai-Ming Chang for his programs－the subprogram which calculate the force between atoms, the subprogram of Verlet list + Cell link method, the subprogram of computing temperature of slices of the simulation cell, and the method of how to set the initial position of atoms at lattice sites of the periodic boundary condition. Those programs and the method make the research in this thesis completed successfully.
在此要特别感谢张泰鸣学长提供本论文程式的主要部份－计算原子间作用力的副程式、Verlet list + Cell link 法副程式、计算薄层温度副程式以及在周期性边界条件下，如何排列晶格原子初始位置的方法，使本论文的研究得以顺利完成。
Complex variable method is introduced to solve the two basic models: the edge and polygon under arbitrary boundary forces.
文中引入复变函数方法以解决尖劈受任意作用力的情形及任意多边形受任意作用力情形。