边缘检测

Therefore, based on analysis the relation of edge density distribution and the ratio, an adaptive multiscale edge detection method is proposed.

基于这个比值与边缘密度分布关系，提出了基于区域能量的自适应多尺度边缘检测方法。

First, we smooth the tongue picture. We detect the tongue edge by wavelets and a method of which is based on color information differentiability.

首先，我们对舌象进行平滑去噪，再利用小波和基于彩色信息区分度的彩色边缘检测方法提取舌象边缘，获得舌面区域。

For the sake of predicting the detection effect of differential operator s,the frequency features of common operators are analyzed from the view point of frequency domain.

为了预测微分算子边缘提取能达到的效果，从频域角度出发，分析了边缘检测中常用微分算子的频谱特性。

According to the algorithm idea of edge detection of gray scale images,with the aid of differential operator and through convolution,two algorithmsof segmentingcolor images are put forward.

主要根据灰度图像的边缘检测算法思想，借助空域微分算子，通过卷积提出了基于边缘的两种彩色图像分割算法。

Edge is one of the most important features of image and image edge detection is the main aspects of image processing.

图像最基本的特征是边缘，图像的边缘检测是图像处理的主要内容之一。

Edge is the most basic feature of images, so edge detection is an important content of image processing.

边缘是图像最基本的特征，因而边缘检测是图像处理中的重要内容。

Then,according to the characteristics of LER measurement and characterization method,the influence factors of LER measurements using AFM,including the nonideal properties of the sizes and shapes of probe tips,the signal noises of AFM images,scan sampling intervals,the driving precision of piezoelectricity,cantilever oscillation and the free parameters of edge detection algorithm and so on,are analyzed theoretically and experimentally,and the methods for restraining and amending the measuring errors are respectively proposed.

然后，根据线边缘粗糙度测量与表征的特点，对各种影响因素，包括探针针尖尺寸与形状的非理想性、AFM扫描图像的噪声、扫描采样间隔、压电晶体驱动精度、悬臂梁振动以及线边缘检测算法中的自由参数等进行了理论和实验分析，并分别提出了抑制及修正的方法。

The grey scale of the pixels in image is expressed by quantum bit and the relation between two pixels is described by means of the superposition of two quantum bit in this paper.Based on this,the average of linear hermitian operator in this superposition can be used for judging the edge of image and a new method for edge detection of image is so created.The rationality of the method is interpreted by probability theory here.

利用量子比特表示图像像素的灰度，用双量子位叠加态来描述两像素之间的关联，通过线性厄米算符在该量子叠加态中的平均值来判断像素的边缘特征，由此建立了一种新的图像边缘检测方法，并从概率论的角度对该方法的合理性给予解释。

The edge detection function of the implicit geodesic active contour model was improved, and the weak edge detection was enhanced.

改进隐式测地活动轮廓模型中的边缘检测函数，增强了处理弱边缘的能力。

A optimum algorithm based on gradient sharpening about edge detection of image is proposed according to the shortcoming of the conventional algorithm unable to recognize the blurred edge,unclear character in the image of instrument on board.

针对机载仪表视频图像存在边缘模糊，字符不清，传统算法难于识别的缺点，提出了一种基于梯度锐化的图像边缘检测的优化算法。

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。