边缘检测

And linking the principle of choosing computer visual inspection system hardware, the paper constructs hardware structure of visual inspection system, and develops measure software of thread geometry parameter and applies all above research results to quantificationally measure geometry parameters such as half angle of thread, coning and pitch of conical joint screw thread of graphite electrode, at last educes influencing expressions of the shelter of lead angle to half angle of thread change, it establishes theory base for error amendment.

论述了微小零件尺寸及形状误差的常用测量方法，提出了将视觉检测技术应用到微小零件尺寸及形状误差的测量中，构建了视觉检测系统的硬件结构，开发了相应的测量软件，应用第三章介绍的各种边缘检测方法对传动用滚子链链板进行了边缘检测对比实验，找出适合的边缘检测方法，并应用上述各章的研究结果对传动用滚子链链板节距以及圆形零件的圆度误差进行了测量。

This paper studies the causes of noise sensitivity and edge coarseness using usual edge detection presently.

针对目前常用的边缘检测方法对噪声比较敏感，测得的边缘比较粗糙等现象，在传统边缘检测方法的基础上提出了一种基于数据融合的边缘检测方法。

This is an untouched measuring way. The cameras are calibrated in the way of RAC two steps, first. With the polynomial interpolation, the pictures catched from the steel plate are treated to detect the edge in subpixel with a cross window arithmetic operators, which can fit non uniform illumination, keep the edge character and do filter in a better way. Three-dimensional scenery could be rebuilt from the two-dimensional pictures with the methods of least square fitting and contradictorily clairvoyance. Thus, the distance and its variance of two points in the given position of the plate can be achieved. It is expected that this study can provide a new and useful tool to the research on the theory of distortion of line heating.

这种非接触的测量方式，采用RAC两步法对摄像机进行标定，然后对采集到的钢板图像进行分析处理，通过多项式插值的方法，采用具有保持边缘特征和滤波功能，且能适应非均匀照明的十字窗图像边缘检测算子进行象素级边缘检测，再用最小二乘拟合法和逆透视法对二维图像进行三维重建，便可测出钢板上给定点的距离及其变化值，以期为水火弯板的变形机理研究提供一种新的检测手段。

To improve the segmentation effection and efficiency, we fulfill the following work:There is an obvious difference between General Fuzzy Operator and other edge detection which based on edge magnitude.

本文在提高图像分割质量和效率方面做了以下几个方面的工作：基于广义模糊算子法的图像边缘检测与其它基于边缘强度依靠导数的边缘检测法明显不同，具有计算量小，检测到的边缘精度高等特点，但是GFO算法中的关键参数需经验、人为确定，影响了该方法的检测效果，限制了其在实际中的推广应用。

For large amounts of images edge detection, this algorithm is simple but very effective. It can effectively eliminate noise and accurately detect the edge information, and it can also maintain good goal edge connectivity, which is a good method of edge detection.

从算法对大量图像边缘检测的结果看，这种算法虽然简单但效果很好，既能有效消除噪声影响，准确地检测边缘信息，又能较好地保持目标边缘的连通性，是边缘检测的一种很好的使用方法。

Based on the histogram multifractal spectrum estimation, a kernel density estimation of multifractal spectrum is suggested, and moreover a edge dection method by multifractal spectrum is present, simulation results show that image edges detecting through this method have good global and local character, and are more finner.

在多重分形频谱直方图估计方法的基础上，提出了一种基于核估计的多重分形频谱估计方法，同时提出了一种基于多重分形频谱分析的图象边缘检测方法，利用该方法所检测出的图象边缘具有良好的全局性和局部性，也就是说它能够检测出比较精细的图象边缘； 4。

The experiment results show that the edge detection algorithm has a good performance of noise reduction compared with traditional edge detectors, and the detected edge is smooth.

实验的结果表明，本文提出的形态学边缘检测算法，与传统的边缘检测算子相比，具有较好的抗噪性，并且检测出的边缘平滑性好，特征清晰。

The algorithm adopts classical bilinear interpolation algorithm in the area of image other than the edges;concurrently the stairway detection is further made according to the outcomes of Canny edge detection to sift out the horizontal and vertical edges which will not produce jaggies distortion;but in edge areas where severe jaggies distortion will occur when using classical algorithm,the stairway thinning-based interpolation algorithm is implemented.This interpolation algorithm keeps stairways from being enlarged when zooming out the image,hence the goal of reducing jaggies distortion is achieved.

该算法在图像的非边缘区域采用经典的双线性插值算法；同时根据Canny边缘检测的结果，进一步进行阶梯检测，滤除不会产生锯齿失真的竖直和水平边缘；而在使用经典算法会产生严重锯齿失真的边缘区域，运用基于阶梯细化的插值算法；该插值算法在放大图像的同时，抑制边缘中的阶梯被放大，从而达到减少锯齿失真的目的。

In order to get anti-noise and good localization image edges, a new fuzzy multi-scale edge detection algorithm is presented in this paper. Firstly, multiple edge images under different scales are acquired by the optimal linear filter for Demigny's criteria.

工业技术能源与动力工程模糊多尺度边缘检测方法的研究与应用硕士边缘检测；最优滤波器；平滑滤波器；模糊多尺度； edge detection；optimal filter；smooth filter；fuzzy multi-scale；为了获取抗噪性强、定位准确的边缘，本文提出了模糊多尺度边缘检测算法。

According to the meteyard of edge detection and consulting the design-aim of optimal edge-filter, this paper discussed the general rules of selecting the mother function of wavelet used in edge detection, then constructed a quadric B-spline wavelet and presented a method of adaptive thresholds edge detection for image based on wavelet transform.

根据边缘检测的评价标准，参照最佳边缘滤波器的设计要求，确定选择用于边缘检测的小波母函数的一般准则，并在此基础上构造出二次B样条小波，提出了基于小波变换的自适应阈值图像边缘检测的新方法。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。