边缘检测

So we can use some theories of edge detection and corresponding detection methods to realize detection of geological abnormity body.

因此，可以利用某些边缘检测理论及其相应的检测方法实现地质异常体的检测。

According the feature of gray absolute correlation degree, an edge detection method based on ray absolute correlation degree and standard deviation of Image sub-block is given, and the threshold is adaptive in the method.

针对灰色绝对关联度计算模型的特点，提出一种基于灰色绝对关联度和图像子块标准差的边缘检测算法，实现遥感图像边缘灰提取过程中阈值的自适应调整。

The program can be completed on the edge of an image detected by the edge of the image, follow-up to deal with.

详细说明：该程序可以完成对一幅图像的边缘检测，得到图像的边缘，进行后续处理。

Next, edge detection using differential operator, edge thinning and connecting are introduced. Model and methods of image segmentation are discussed subsequently.

本文针对图像的灰度和边缘等特征，研究了微分算子边缘检测方法以及边缘细化和连接的算法，给出了图像分割的模型和灰度阈值的简单分割及自动分割方法。

Experimental results demonstrate that the proposed scheme is superior to the scheme based on wavelet modulus maxima by approximating better the edges of images.

实验结果表明，与基于小波模极大值的图像边缘检测方法相比，该文算法有较低的计算复杂度，所提取的边缘更加逼近图像真实边缘。

Firstly,an edge detection method based on Facet model is used to extract the sub-pixel edges.Secondly,the method of minimizing distance search is studied to separate and sort the edge of the measured object.

首先采用基于Facet模型的边缘检测算法提取亚像素边缘，然后通过最小距离搜索法分离出待测目标的边缘点并排序，最后利用离散化的格林公式计算面积。

In this method,edges are preserved and interpolations are performed within each subregion to avoid smear across edges.

笔者提出了一种新的结合边缘检测的空域内插办法，能在保留边缘的情况下根据边缘对图像的划分对图像进行分区内插。

Phase unwrapping algorithm based on edge detection is suitable to well separated fringes, the unwrapped phase can be rewrapped to the original phase map, which shows the result is correct.

4对于低噪声情况下或滤波后的干涉条纹图，在基于边缘检测的相位解缠过程中，利用Snake模型可以高效准确的实现边缘点的连接，所连接的边缘线与干涉条纹很好的吻合，可将连线的精度控制在三个像元。

When detecting the edge, an auto-choose threshold algorithm is given to reduce the salt-and-pepper or pulse wrong edges. After analyzing the special noise factor in pin's image, this paper improves the edge detection elements. That's putting forward a way which is named"the method of de-noise based on linear weighted operator template"to reduce the zonal or cluster noise. And test show that the algorithms detect image's edge rightly.

针对钻针图像的特点，在边缘检测中提出了自动选择阈值的算法；之后针对钻针图像中的特殊噪声形式，对边缘检测算法进行了原理上的改进，通过对图像的灰度分布的数学模型的建立，提出了使用加权直线模板去噪法进行块状噪声的去除；通过上述算法的应用，良好地改善了图像处理的质量。

To locate the barcode, getting the edge of barcode and locate the L, we use the Gauss Laplace operator. This method first smoothing the noise and then getting the edge, and we can get more accurate Border information.

为了定位条码、获得条码的边缘及定位条码的L型，本文使用了高斯拉普拉斯算子进行边缘检测，首先平滑掉噪声，再进行边沿检测，这样找到的边界信息更准确。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。