边缘检测

Looking for a band, generally with a dedicated gradienter, gradienter must be in good working condition, or is unable to detect the machine's rotafiong, gradienter should regularly sent to the Centre for metrology and calibration.

找程量时，凡是都用兼用的程量仪，程量仪务必处于精良的处事状况，否则无法检测机械的程量量，因此程量仪答按期送到计量边缘校准。

The experimental results showed that the segmentation and the edge detecting effects of the BP network method were satisfying. Easy to design was the hest advantage of such method.

以超声CT检测图像和起导师信号作用的二值图像为训练样本，采用BP算法进行训练，对实测图像分割后得到了目标边缘清晰的较好分割效果。

This paper proves that Ordered Statistic with Greatest Option CFAR and Ordered Statistic with Smallest Option CFAR are also of CFAR under homeomorphic independent K-distributed clutter background when the shape parameter is known. The performance of two detectors is analyzed against uniform clutter background, clutter edges and multiple target environments.

摘要该文证明了形状因子已知条件下OSGO-CFAR和OSSO-CFAR检测器在均匀统计独立的K分布杂波背景下具有恒虚警性能，分析了两种检测器在均匀杂波背景、杂波边缘和存在强干扰目标情况下的检测性能。

Secondly, facial region＇ s horizontal gray-level projection is used to estimate the horizontal position of eyes.

在肤色分割的基础上，利用水平灰度投影估计人眼水平住王，然后结合候选脸区的边缘图像，给出人眼的确定位王，并输出人脸检测结果。

Secondly,facial region's horizontal gray-level projection is used to estimate the horizontal position of eyes.Finally,the edge features are checked to give the proper position of eyes.

在肤色分割的基础上，利用水平灰度投影估计人眼水平位置，然后结合候选脸区的边缘图像，给出人眼的确定位置，并输出人脸检测结果。

Simulation results indicated that the adaptive median filtering effectively removes noise, and maintain the details of welded seam and defection edge; the variance ratio of interclass and intraclass segmentation could accurately distinguished between the welded seam metal and the base metal together with mathematical morphology method; high frequency enhancement extrudes the welded seam center, consequently defects would be detected.

仿真结果表明自适应中值滤波能够有效去除噪声，并保持焊缝和缺陷的边缘细节；类间、类内方差比分割方法与数学形态学方法并用，能准确的将图像分割为焊缝与母材区域；高频加强变换能够使焊缝中心部位突显出来，从而实现缺陷的检测。

A fast line segment detection method is proposed based on edge linking.

提出了一种基于图像边缘连接的线段检测方法。

This thesis chooses B spline wavelet that adapts to the analysis of power system signal, and uses the wavelet transformer to analyze the magnetizing inrush current and inner fault current.

而小波变换具有多尺度分析和良好时频域局部化分析特性，适合提取信号边缘和峰值突变的特征，能够很好的检测信号奇异性。

Using the estimation of marginal and joint statistical distribution of Contourlet coefficients via the method of maximum likelihood estimator, multiplicative watermarking and blind detection framework is presented in the Wavelet transformation domain and the Contourlet transformation domain.

采用极大似然估计的方法对Wavelet变换和Contourlet变换系数的边缘分布和联合分布进行拟合，提出了一种Wavelet变换域和Contourlet变换域乘嵌入水印及盲检测框架。

Presents a preceding vehicle detection algorithm based on multiple scale edge and local ent ropy.

提出一种基于多尺度边缘和局部熵原理的前方车辆的检测算法。

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。