查询词典 edge detection

Edge detection is one of the important roles in the digital image processing, the Prewitt operator, LOG operator and Canny operator are adopted in the classical edge detection operator arithmetic in space domain.

边缘检测是数字图像处理的一个重要内容，讨论了经典的边缘检测算子算法，该算法更多地采用Prewitt算子、LOG算子、Canny算子等在空域中进行。

In order to improve the convergence rate of genetic algorithms based on edge detection,a novel edge detection method based on a good point set genetic algorithm was proposed.

为了提高遗传算法应用于边缘检测的收敛速度，提出了一种基于佳点集遗传算法的边缘检测方法。

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。

For getting the major characteristic edges without confusions by undesired structures like muscle edges, we integrate a star-like edge detection filter named "Asterisk Filter" with the Canny Edge Detection in the image preprocessing. In addition, we also propose a new contour tracking method named "One-Pixel Rolling Ball Contour Tracking" for getting the boundary information in a binary image which is a link-list data structure. Instead of using a regression curvature estimator, PCA is used for better curvature estimation from a discrete bony contour.

为了从影像上取得骨头特徵边缘，将不重要的肌肉视为杂讯滤除，我们引用一种星形滤波器－Asterisk Filter，搭配Canny边缘检测法，做为这类影像的前处理；另外，为了将骨头的边缘精确地追踪出来，我们提出滚球边界追踪法，来对二值化影像进行边缘追踪，藉此获得边缘的串列资料结构；我们采用以主成分分析(Principle Component Analysis，简称PCA)取代原本以回归方法来计算的曲率，以取得更佳的曲率估测值，其可提高计算之参数的准确性。

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。

In order to meet the market for a variety of Chinese character processing needs, drawing the profile of font,in the Windows system, the edge recognition technology was researched. The pixels marginal detection from eight directions was introduced, BMP graphics was presented based on the eightmegapixel point the direction of the edge detection algorithm. The information of key data points was extracted.The XY motion simulation platform based on the straightline interpolation through point by point comparison was developed, the simulation of font path and engraving process was achieved.

为了满足市场上对各种汉字加工的需要，在Windows系统下，通过对汉字边缘识别技术的研究分析，提出了基于BMP图形像素点的八方向边缘检测算法，成功地识别和提取了不同参数的字体外形轮廓信息，并采用逐点比较直线插补算法，提取了关键数据点的信息，最后开发了XY运动仿真平台控制软件，实现了字体运动轨迹的仿真及实际雕刻加工。

A novel method for image edge detection is presented based on information measurement and Support Vector Machine, which is called ISEDM (Information measure and support vector machine edge detection method).

将信息测度和支持向量机结合在一起，提出了一种新的图像边缘检测方法（information measure and support vector machine edge detection method， ISEDM）。

At the second place, feasibility of edge detection based on orthogonal wavelet is discussed in the article. Its theoretical key of edge detection based on orthogonal wavelet that approximate symmetrical or antisymmetrical orthogonal real wavelet can be constructed though Haar wavelet is the only symmetrical or antisymmetrical orthogonal real wavelet.

随后本文讨论了正交小波基用于边缘检测的可行性：虽然除了Haar小波外再也找不到对称或反对称的正交实小波，但是可以构造出近似对称或反对称的正交实小波，这就是正交小波用于边缘检测的理论关键。

The proposed method applies color- pair zone detection, color-pair edge detection, chrominance maximum statistic and intensive small edge enhancement to input images, and the results are integrated by fuzzy set operators so that the license plates could be extracted accurately.

该方法用图像颜色对区域检测、颜色对边缘检测、色度峰值统计及密集小边缘增强，使用模糊集算子综合它们的结果，精确提取出车牌。

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。

Liapunov—Schmidt method is one of the most important method in the bifurcation theory.

Liapunov—Schmidt方法是分叉理论的最重要方法之一。

Be courteous -- even when people are most discourteous to you .

要有礼貌──即使当別人对你最不礼貌的时候。