首先对遥感图像进行边缘检测以获取图像中每个像素的边缘梯度和方向信息；
The edge gradient and direction information are obtained by edge detection of remote sensing.
根据人脸图像的边缘梯度图提出了一种新的基于梯度向量流场的眼睛特征提取方法。
According to features of edge gradient maps of face images, a new eye feature extraction algorithm based on gradient vector flow field was proposed.
而在HSL颜色空间，构建了一类基于多结构元形态的边缘梯度…更多检测算法，提出了改进的多结构元彩色形态边缘检测算法，并作了信噪比比较分析。
The improved method of realizing edge detection is proposed based on multi-structuring elements color morphological, and comparative analysis of signal to noise ratio has been made.
因此，当一位科学家有兴趣研究生活在海平面下某一温度层边缘的微生物，这台水下自动探测机器人能够找到温度梯度的边界，并在那里找到最佳样本。
So if a scientist wanted to study the microorganisms living on each side of a temperature gradient, the AUV would find the boundary, follow it, and pick the best spot to take samples.
通过计算图像梯度信息，选取边缘区域像素作为控制点，既改善减影图像质量，又提高运算速度。
The quality of the subtraction image was improved and computation time was reduced by selecting edge pixels as triangular control points.
除了局部不对称特征，局部梯度特征也是图像边缘的一种重要特征。
The local gradient features are also one kind of the important features of image edges.
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。
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.
该算法将二值边缘图像的梯度映射和人的面部特征的潜在分布规律相结合。
This algorithm has combined the gradient mapping of binary edge image and the potential distribution of people's facial characteristics.
通过确定尺度相乘后的梯度图像，采用非最大值抑制方法得到边缘图像。
Using the non-maximal suppression method, the edge map is obtained by confirming the gradient map of the scale multiplication.
研究了垂直形变异常与地震的对应关系，地震发生在垂直形变隆起区的边缘形变高梯度带上。
And the corresponding relationship between crustal deformation and earthquake is researched, the earthquake oc curred in high gradient belt along the edge of vertical deformation upward district.
研究了多种目标提取的数学形态学算法，包括击中与击不中变换、边缘检测与形态学梯度等。
Various algorithms of mathematical morphology are researched, they include hit or miss Transformation, edge detection and morphological grads, etc.
利用梯度排序来保持图像内部的边缘，实验结果也表明改进后的修复结果要优于原算法。
Propose an improved algorithm, which uses the gradient-sorting estimation to preserve the edge, the results of experiments have shown the improved one i.
自动边界数据采集系统是用梯度边缘追踪法自动获取左室内膜边界的曲线点，使用三次曲线插值法及最小二乘法拟合整条左室边界曲线。
The system of automatic boundary data acquisition can obtain the curve data of the endocardium boundary of left ventricle with the tracing algorithm of the gradient image edge.
首先提出了一种基于标准差的梯度算子，将图像中潜在的边缘区域很好地区分出来；
Firstly, a gradient operator based on local standard deviation is performed and potential edge regions are well separated.
边缘检测处理部分采用了梯度处理法、锐化处理法、哈夫变换处理法，并对图像作轮廓跟踪处理。
Secondly, for the image edge detection, methods including the gradient method, the sharp-processing method, and the Hough transformation were used, and the contour tracing was also conducted.
而且矿区、矿化集中区还位于反映深部构造变异的局部重力异常区边缘、区域航磁走向中断区或梯度变化带附近。
Ore zones occur in the edge of local positive gravity anomaly, in the strike interrupted area or steep gradient area of regional aeromagnetic anomaly.
在灰值形态学梯度算法和多方位形态结构元素形态学理论分析基础上，提出了提取遥感图像边缘信息的新方法。
Based on morphology grads algorithms and multi-direction morphology structure element of mathematical morphology theory, this paper presents a new method for remote sensing image edge detection.
标准滤线栅便于形成在收集边缘提供高磁场和高梯度的要素，压降较低。
Standard grids have advantageously shaped elements to provide high magnetic field and gradient near collecting edges, while causing very low pressure drop.
通过基于梯度直方图来选取双阈值，最后进行基于双阈值的非极大值抑制，得到边缘检测的图像。
Based on the gradient histogram, the double thresholds can be found. At last, non-maximum suppression based on double thresholds is used to detect the edge.
基于空间域共轭梯度算法的盲目图像复原方法由于在复原过程中追求了充分平滑，使得复原图像中的边缘细节信息有所损失。
The restored image obtained by using the space domain conjugate gradient algorithm is too smooth and loses some information about the edge detail.
针对检测数字图像灰度梯度的最大值法，采用SOBEL边缘检测算子对数字图像进行边缘检测，并利用硬件(大规模可编程逻辑器件CPLD)实现了数字图像的边缘提取。
The article will contrapose maximum value method based on detecting image grey grad, and take example of SOBEL operator to realize digital image fringe picking up based on hardware (CPLD).
成矿的有利部位是剪切带的边缘及次级剪切带问的过渡地带，它们是剪切带内应力梯度变化大的地带。
The shear zone boder and the belt of the transition between the secondary shear zones where the stress gradient changed greatly are f.
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。
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.
本文的主要贡献如下：（1）提出了梯度和相位信息相结合的边缘特征检测模型—GP模型。
The main contributions of this thesis are as follows:(1) An edge feature detection model based on gradient and phase (GP model) is proposed.
外形平滑时而带有梯度，上下，左右面的边缘有一定弧形。
Smooth shape with a gradient from time to time, from top to bottom, left and right side edges have a certain arc.
针对这一问题，提出了一种基于形态学梯度的信号噪声分离算法，通过检测信号的边缘实现信号噪声分离。
To solve this problem, this paper proposed a signal noise separation algorithm based on morphological gradient to separate signals from background noise by detecting edges of signals.
最后利用形态梯度的算法探测出感兴趣区域的边缘。
At last, the edges of ROIs are detected by using morphological grads.
此外还介绍了边缘点的梯度方向约束，给出了基于以上约束条件的边缘线匹配算法。
In addition, gradient direction constraint of edge point was introduced. Matching algorithm based on aforementioned constraints was proposed.
边缘保持是保持边缘区域的梯度；
The edge preservation is to preserve the gradient of edge areas.
基于梯度的边缘检测算法，主要是针对阶跃形边缘的检测。
Gradient based edge detection methods are mainly focus on step edges.
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