Most methods of locating the ROI of palmprint now are based on edge detecting.
现在的掌纹roi定位方法都是以边缘提取为基础的。
The dissertation has introduced the traditional edge detecting and linking methods.
本文介绍了常用的边缘检测方法和传统的边缘连接策略。
In this paper, an effective edge detecting method based on Mathematical-morphology is proposed.
提出了一种基于数学形态学的边缘提取方法。
Using improved sub-pixel edge detecting algorithm based on the expectation of first-order derivatives, we can fast and precisely detect the edge position.
应用改进后的基于一阶微分期望值的亚像素边缘检测算法，可以快速、精确地检测到边缘的位置。
So the paper definitely has some reference value not only for the image inspecting ways of slide wear but also for the design and realization of edge detecting and location algorithm.
本文对滑板磨耗图像检测的方法以及边缘检测及定位算法的设计和实现都具有一定的参考价值。
After orange image edge detecting and segmenting, the size, shape and surface damage extent of orange can be acquired according to orange image character.
将柑桔图像进行分割和边缘检测之后，基于图像特征我们可以计算柑桔大小、形状和表面损伤程度等情况。
As to software design, we adopt Hough transform theory to calculate the coordinate of the ball's center in order to work out the velocity, by the way of edge detecting of the sphere.
软件设计部分旨在通过边缘检测以提取球体边界，再利用霍夫变换求得球心坐标位置从而获取球体的位置信息进而计算出速度大小。
Based on the discussion of the theory of wavelet transform of images, a practical multi scale edge detecting method is put forward and the ways to suppress noise interference are discussed.
在对图像的小波变换原理讨论的基础上，提出了一种较为实用的图像多尺度边缘检测方法，同时对如何抑制噪声的干扰进行了讨论。
First, do median filter to image in order to wipe off noise, then make use of Gauss-Laplace operator to pick up edge. The result showed the kind of edge detecting method has good performance.
首先对图像进行中值滤波去除噪声，然后用高斯—拉普拉斯算子提取边缘，这种边缘检测方法的效果很好。
An edge detecting method for digital image is proposed using direction information of the gradient to thin off the differential image and defining a measuring function to link the edge points.
本文提出了一种利用梯度的方向信息，对微分图象进行细化，并确定一测量函数进行边缘点连接，以实现图象边缘检测的方法。
The image processing algorithm of slide abrasion detection is designed in this paper. It includes image preprocessing, edge detecting and linking, contact wire and slide edge location and etc.
本文设计了滑板磨耗图像检测算法，主要包括图像预处理，边缘检测和连接，导线及滑板边缘定位等。
Based on different properties of the coefficient modulus of the signal in different scale wavelet transform, conjunction the best estimate of gradient algorithm an edge detecting method is proposed.
基于信号在不同尺度下小波变换系数模不同的变化特征，结合最优梯度估计算法提出了一种边缘检测方法。
Edge detecting is an indispensable step of computer vision. It is a important procedure of image preprocessing technology.
边缘检测是机器视觉中必不可少的环节，是一种重要的图像预处理技术。
Edge detecting an image significantly reduces the amount of data and filters out useless information, while preserving the important structural properties in an image.
边缘提取可以明显的减少数据量，并且可以滤去一些没用的信息。同时，它也保留了图像重要的结构性质。
Because of intricate backgrounds of human organs, edge-detecting algorithms are liable to be invalid under noise.
由于人体器官所处的背景较为复杂，边缘检测算法容易受到噪声的干扰而效果不佳。
The theoretical and experimental results show that the new method has a fairly good property in both noise-restrain and edge-detecting.
理论分析与实验结果表明这种方法具有较强的噪声抑制能力和边缘提取能力。
Moreover, the edge-detecting method of image processing is used in detecting water level of boiler drums.
并结合图像处理技术，开发了针对不同水位计图像处理的算法，实现了水位计的清晰显示。
Moreover, the edge-detecting method of image processing is used in detecting water level of boiler drums.
并结合图像处理技术，开发了针对不同水位计图像处理的算法，实现了水位计的清晰显示。
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