边缘检测

To a certain extent, it has overcome proportionality factor influence and the displacement difference of the Deng interrelatedness analysis method. The experiment proves that in the examination peripheral point's continuity, the complete aspect has certain improvement compared to the Deng interrelatedness model examination.

根据邓氏关联度分析方法建立的改进模型，结合仿射变换和最小二乘法直线拟合，一定程度上克服了邓氏关联度分析方法的比例因子影响和位移差，实验证明在检测边缘点的连续性、完整性方面比用邓氏关联度模型检测的边缘有一定的改进。

By Code extraction method is to investigate the edge of each image pixel in a neighborhood Gray-scale changes in the region, using the edge of the neighboring first-order or second-order directional derivative Changes of a few simple ways to detect the edge.

经 典的边缘提取方法是考察图像的每个像素在某个邻域内灰度的变化，利用边缘邻近一阶或二阶方向导数变化规律，用简单的方法检测边缘。

The method for the point sets selection of point Hough transform and the scan direction for image of searching the point sets were improved by using the geometrical characteristic of the concentric circles:The center of the concentric circles was obtained in the accumulative array firstly,radius was obtained by the mean of distance between the circle center and every edge points afterwards,both the circle center and the edge of the concentric circles were detected accordingly.

利用同心圆的几何特点对点Hough变换边缘点的点组选取方法和搜索点组的图像扫描方向进行了改进：首先由累加阵列确定同心圆的圆心，然后由圆心到各个有效边缘点距离的均值求出半径，从而检测出同心圆的圆心与边缘。

In order to reducing measured errors, it is needed that the measurement system must be positioned marginally in sub-pixel level. Traditional moment methods were scarcity. In this paper, we bring forward polynomial interpolation to realize position for the object.

为了减小测量的误差，需要对被检测物进行亚像素级别的边缘定位，传统的矩方法有很大的不足，本文提出多项式插值法实现对检测物的边缘定位。

According to the feature, the blurred edge of the target in the superposition region can be detected, and the target edge parallel to the motion blur direction is detected by a Canny operator.

基于该灰度变化特征检测运动模糊方向上的目标边缘，并利用Canny算子检测平行于模糊方向的边缘，两部分边缘进行求或运算并进行形态学处理，从而分割得到完整的目标模糊图像。

The measured object can be found within a few milliseconds in the raster-scan image. 4 . Two lines delay for the processed image is implemented using two 128×8 shift registers with the configurable logic block in FPGA. A new fully pipelined bit parallel hardware architecture for Sobel edge detection is implemented with FPGA. Furthermore, it takes no more than 2ms to complete the edge detection of an image with 128×128 pixels.

视觉检测信号的前端处理技术 1、系统地分析了视觉检测算法层次性特点和计算特点，提出了提高视觉检测信号处理速度的基本方案：采用前端处理系统，自动识别被测物体在获取图像中的位置，并将真正有用的被测物体的边缘坐标值，提供给计算机，作进一步的高精度处理； 2、系统研究了实时图像硬件处理的设计基本方法，提出了基于FPGA的视觉检测信号的低级处理算法硬件实现模块化模型； 3、提出了一种新的基于FPGA的模板匹配并行模块化结构，解决了二维图像处理高带宽要求，在几毫秒内就可以在按扫描顺序输入图像中找到检测目标物体的位置； 4、采用FPGA内部的可配置逻辑块实现了128×8移位寄存器的设计，解决了大容量移位寄存器与FPGA内部寄存器数量之间的矛盾，实现了两行图像的延迟。

Gaussian function through derivative edge detection in real terms is Steerable Wavelet image edge detection.

详细说明：通过高斯函数导数检测图像边缘，实质是方向可调小波变换检测图像边缘。

A new algorithm of low bit rate image compression was proposed. Firstly, the edge informations of the input image were detected with SUSAN operator, then the detected edge informations were en hanced with edge enhancement method. Finally, the enhanced edge informations were added to the decoded input image to form the final compressed image.

提出一种新的低比特率图像压缩算法，该算法首先利用SUSAN算子检测出输入图像的边缘信息，然后利用边缘增强方法对边缘信息进行增强，最后将增强后的边缘信息和解码后的输入图像相加形成最终的压缩图像。

This paper first introduces a system which can detect vehicle disobey the red light. then introduces a arithmetic with shadow elimination to solve the problem of violations detection of yellow line: by day,the quality of the image is good,this arthmetic uses a method which combine the line-frame detection and the HSV color information analysis.this method detect violations according as whether the line-frame of yellow is being destroyed. In order to solve the most important problem in apply instance—interference of shadow,we add HSV color information analysis in the area of yellow line which line-frame is being destroyed. If the shadows proportion is below the threshold,then we determine vehicle violative of yellow line; at night,the quality of the image is not good, we calculate the grey image of differences to detect violations.

本算法在白天图片质量较好时，采用结合HSV颜色空间分析线结构检测算法，该算法利用黄线区域的边缘结构特征作为依据检测是否存在车辆或阴影压黄线，针对实际应用中存在的最大问题即阴影的干扰，加入了HSV颜色空间分析来检测黄线边缘残缺区域，若该位置阴影比重低于一定比例，才认定为是车辆压黄线违章而不是阴影干扰；在夜晚图片质量下降的时候，采用灰度差值法。

Global measuring accuracy evaluation method for vision inspection system With a movable three coordinates measuring system made up of two high accuracy electron theodolites, a new Measuring accuracy field evaluation method for the large vision inspection system is presented in this dissertation. The proposed methods and theories are proved by a lot of experiments.

采用全流水线位并行技术设计了Sobel边缘提取算法的硬件结构，对128×128图像的边缘提取在2毫秒内即可完成；（5）视觉检测系统整体测量精度的检定方法提出了基于高精度电子经纬仪组成的移动三坐标测量系统来对大型视觉检测系统测量精度进行现场检定的新方法。

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。