Firstly, an improved Canny edge detection algorithm is represented to obtain thin and robust edges. Secondly, based on detected edge gradient of image, an iterative chain code tracing method with parallel hierarchy is introduced for line segment detection.
在立体图像的特征提取中，本文提出了一种改进型Canny边缘检测算法实现图像精细边缘的检测，然后基于图像边缘梯度信息，采用分层并行迭代链码跟踪方法实现直线段的提取。
参考来源 - 主动立体视觉关键技术及其应用研究·2,447,543篇论文数据，部分数据来源于NoteExpress
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.
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