边缘检测

Then gray matching are done with the conjugate points,and the points which can not match well are found.

以此为基础选择精检测窗口，进行边缘提取和跟踪，并进行链码匹配，最终确定发生变化的区域。

Keywords: Multiscales analysis,Marr edge detection operator,Wavelet decomposition,Edge detection,Degree of the details selection

小波分解的级数控制观察距离"调焦"，改变 Marr算子中的标准差σ、可实现在同一分辨率级上所要求检测边缘的细节程度。

Based on the differential operator method of detecting almost all more sensitive to noise and can not guarantee that they will get straight edge, can not be used for target identification and analysis.

基于微分算子检测的方法几乎都对噪声较为敏感且不能保证得到连续的边缘，无法用于辨识和分析目标。

Image processing procedures of Matlab scripts, including corner detection, edge connectivity, high-pass filter, Low-pass filter, and so on.

图象处理的matlab程序集，包括角点检测，边缘连接，高通滤波器，低通滤波器等等。

The edge detection of SAR is very important for image analysis and recognition.

在对SAR图像的分析和识别中，边缘的检测信息十分重要。

A 40Hz event related potentialdetecting system is introduced here. The system employs the elliptic—type filters which have excellent edge features to extract signals of narrow band frequency . It exploits the correlation—threshold method proposed by us to cancel the musc1e artifacts.

详细介绍了我们建立的一套 40 Hz ERP(4 0 Hz事件相关电位)信号检测系统，该系统使用边缘特性最好的椭圆窄带滤波器提取窄带信号，采用我们提出的相关域值法很好地剔除了肌电干扰，并在微机上实现了实验自动化和结果自动统计。

At the same time, an experiential edge detection algorithm is proposed in order to alleviate background disturbance.

同时，为了减轻背景干扰，提出了一种经验有效边缘的检测方法。

And after eliminating fleck yawp, the seismic phase axis is clearer.

并经过消除检测结果中的斑点边缘后，使同相轴显示更加清晰。

The edge information of face region can be extracted with Robert operator after positioning the face area, then, detecting the circle with the geometry property of circle in the located eye area.

在初步定位人脸区域后，采用Robert算子进行边缘提取，然后应用圆的几何性质在人眼大致区域内检测圆，进而定位眼睛中心。

The edge information of face region can be extracted with Robert operator after positioning the face area, then, detecting the circle with the geometry property of circle in the located eye area. After that the centers of eyes can be located accurately.

在初步定位人脸区域后，采用Robert算子进行边缘提取，然后应用圆的几何性质在人眼大致区域内检测圆，进而定位眼睛中心。

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。