查询词典 edge detection

Most traditional algorithms of image edge detection use gradient maximum or zero-crossing based on gray discontinuousness on edge. They are affected easily by noise.

传统的边缘检测算子大都基于边缘的灰度不连续性，利用梯度局部最大值或二阶导数过零点来检测边缘，容易受噪声干扰。

Blood speckle noise in the IVUS image would affect the validity of edge detection badly. A temporal/spatial filtering method was used to preprocess the IVUS image to restrain the noise. Then a method to automatically detect the intima and ectoblastic edge of IVUS image was presented. This method is based on the active contour model and the contrast properties of IVUS image, which makes use of the Hopfield NN and simulated annealing algorithm.

为解决血管内超声图像中严重的血液斑点噪声影响边缘提取方法的有效性问题，采用一种时/空滤波方法对IVUS图像进行降噪预处理，基于活动轮廓模型和IVUS图像的边缘对比度特征量，利用Hopfield神经网络并结合模拟退火算法自动提取IVUS图像的冠脉血管壁内、外膜边缘。

Because the proposed model has the property of multi-scale, the excellent anti-noise in the interior of the region, and the noise weakening faintish edge, the corresponding algorithm has good performance in image edge detection.

该模型具有多尺度、区域内部抗噪能力与尺度有关、噪声弱化弱边缘以及边缘具有隶属度、图像的边缘检测结果与尺度有关等特点，反映了边缘与纹理依尺度的关系。

The algorithm in this paper is based on territory value segmentation of the junction region. The algorithm makes use of edge detection to distill the region of the edge, and conducts domain segmentation, then comminutes the pixels of regional at the junction each region strictly, transfer the similar color to the same region.

本文提出了基于区域交界处的域值分割颜色迁移算法，利用边缘检测方法提取景物边缘交界处区域，进行域值分割，将区域交界处的像素严格分割到所属的区域中，使得属于同一区域的像素迁移同类颜色，最后将已迁移颜色的目标图像均值方差归一化。

In the paper, research begins with these two areas.the algorithm in this paper is based on territory value segmentation of the junction region. the algorithm makes use of edge detection to distill the region of the edge, and conducts domain segmentation, then comminutes the pixels of regional at the junction each region strictly, transfer the similar color to the same region.

本文提出了基于区域交界处的域值分割颜色迁移算法，利用边缘检测方法提取景物边缘交界处区域，进行域值分割，将区域交界处的像素严格分割到所属的区域中，使得属于同一区域的像素迁移同类颜色，最后将已迁移颜色的目标图像均值方差归一化。

After convolving the image model with the edge detection operators of second derivative model, a plane fitting in the least squares sense is used to detect the zero crossing points as edge points.

使用二阶导数型边缘检测算子对图象模型进行卷积后，用均方误差最小的准则对卷积后的图象进行平面拟合，并求出零交点作为图象的边缘点。

The experimental results show that this detection method can effectively filter the noise, remain the fundamental information of original particle images, and the edge image has smooth edge, continual skeleton and less breakpoint.

实验结果表明：这种检测方法能有效地滤除噪声，很好地保留原有图像的基本信息，提取的边缘较光滑，图像骨架也比较连续，断点少。

Each nose bar has at the lower end thereof a pressure edge located adjacent to the cutting edge of the knife for pressing against the log periphery adjacent to the knife cutting edge.

压尺的下端具有施压边缘，紧压在原木的周边上。

On the basis of OCM, segmentation based on curvature radium is presented in the paper, in which curvature radium is calculated using parametric-surface fitting, and detecting edge points is realized from orthogonal direction, which ensure the integrality of edge points. Since the data is organized by cross-line in OCM, a new arithmetic, Double-direction Angle Difference arithmetic, is brought forward, which can pick up edge points more quickly.

物体的表面一般由多个曲面相交组成，要建立完整的几何模型，需要对测量数据进行区域分割——区分不同曲面的数据，现有的区域分割大多是对单视图的图像式测量数据进行的，但完整的CAD模型需要联合多个视图产生，本文在上面提出的三维正交模型的基础上，提出了三种区域分割方法：第一种方法是基于曲率半径的数据分区方法，通过二次参数曲面拟合计算局部曲率半径，从正交的多个方向进行检测，保证了边点提取的完整性。

With JB serious portable edge bander, you can band any wood piece of straight or curve edge all by yourself with perfect final product. Edge banding on furniture manufacturing and house fitment become a simple and easy job!

我司的JB系列手提封边机设计精美、操作灵活，可一人独立完成各种形状工件的封边操作，封边效果完美，适用于板式家具制造业和家居装修工程的封边操作。

Now she was hungry and angry.She began to smoulder.

现在她又饿又气，她开始流露难以抑制的怒火。

You have placed our iniquities before You, Our secret sins in the light of Your presence.

诗90：8 你将我们的罪孽摆在你面前、将我们的隐恶摆在你面光之中。