查询词典 edge detection

A method based on linear singularity analysis of image is presented. The improved method, called Directional Beamlet Transform is better than traditional Beamlet transform about directional information of image and has the ability of representing linear-singularity of image. According to the analysis of linear singularity, edge detection is transferred to detecting singularity point in the coefficient matrix of DBT.

针对基于图像像素点分析的边缘提取方法存在无法同时满足高抑噪性、连续性、定位性等问题，本文提出了方向Beamle 变换方法，在定义图像线奇异性的理论基础上，利用DBT 对图像进行线奇异性分析，依据Beamlet 变换具有的线段提取能力，将图像边缘检测问题转化为方向Beamlet 变换系数矩阵中奇异点的检测问题，以降低噪声点对边缘检测结果的影响。

Watershed algorithm has a strong edge detection capacity of the weak is on the brin...

分水岭算法具有很强的边缘检测能力，对微弱的边缘也有较好的效果。

And a screwy algorithm based on digital image from mono-view is presented. This algorithm needs the four-region sign with the screwy boundary labeled on the surface of columniform targets. Then the length of the intersecting lines of the object's axis and the screwy boundary are gained by means of digital image processing, such as gray histogram balancing, Susan edge detection and Hough transform. Finally, the object's rolling angle is accurately gotten in shooting range.

该方法通过在圆柱形目标表面涂上边界为螺旋线的四区域标志，综合运用直方图均衡化、Susan边缘检测以及Hough变换等数字图像处理技术，从光测图像中得到各个时刻目标中轴线与螺旋线的相交线段的长度，由此可高精度测出空间目标的滚转角，从而有效地解决了靶场试验中空间目标滚转角的测量难题。

In this Paper, we not only try many traditional edge detection methods but also apply Snake model which combinate priori knowledge to this dissertation.

在本课题中尝试各种传统的边缘检测的方法。并研究如何将结合高层知识的Snake模型应用到该课题中。

According to the characteristics of cophasal axes, it is easy and effective to use the edge detection method to extract cophasal axes.

根据地震剖面上同相轴具有的性质，采用图像边缘检测方法提取同相轴简单且有效。

In order to extract cophasal axes more continuous and immune to noise, a novel approach is developed based on edge detection.

实验结果表明应用该方法可以提取连续、准确的同相轴。

Hence,the paper combined the PCNN and mathematical morphology to carry out the edge detection for images containing noises,since the PCNN is advantageous in image segmentation and the mathematic morphology has the dilative and erosive effects on images.

考虑到PCNN在图像分割中的天然优势和数学形态学对图像的膨胀腐蚀作用，采用PCNN和数学形态学相结合的方法对含有噪声图像进行边缘检测。

The experiments results show that the method is robust enough to cluster ambiguous elements,not need to be intervened in segment process and has better flexibleness,which is superior to the threshold segment method and the edge detection method.

实验结果表明方法对中间类灰度等级聚类具有很好的鲁棒性，分割过程不需要人工干预，并且具有较强的灵活性，优于阈值分割和边缘检测的图像分割方法。

In the thinning of the target image, an edge detection method based on four structure elements template and a morphological sequential homotypic skeleton a...

该算法采用并行的处理方式，在提高图像处理质量的同时，提高了骨架抽取的速度；对于细化后的骨架，采用了动态变步长保精度跟踪矢量化方法。

According to the extraction of cells figures, based on the edge detection the paper extracts 9 measurement parameters such as centroid, area, area rate of karyon and cytoplasm, optic density, cells and karyon shape factor according to the morphological knowledge and the medical knowledge of pathology expert.

在细胞特征提取方面，在边缘检测的基础上依据形态学知识和病理学专家的医学知识提取了诸如周长、面积、核质比、光密度、细胞及细胞核形状因子等9个度量参数。

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。