查询词典 edge detection

The higher demands are made on the intrusion detection technology with the increasingly noticeable problem of the network security, but the existing intrusion detection has some limitations facing with the fast change of attack technology. Then on the basis of analyzing some representative IDS the shortcomings existing in traditional IDS are presented, such as being lack of distribute distributivity,flexibility,interoperablility.

网络安全问题的日益突出对入侵检测技术提出了更高的要求，然而现有入侵检测技术面对攻击技术的飞速变化仍然存在一定缺陷，入侵检测系统在很多地方还有待改进，如分布式、灵活性、效率等方面，需要探索新的技术来提高入侵检测系统的整体性能。

A magnified image of the detection double slit is formed on a bi-cell detector,and the light intensities through the detection double slit are detected by the bi-cell detector.In this way,the position of the measured object can be obtained by detecting the light intensities on two separated parts of the bi-cell detector.

探测双缝放大成像在双像限探测器上，投影狭缝像透过探测双缝的光强分别被双像限探测器的两个像限所接收，通过检测双像限探测器两个像限上的光强获得被测物体的位置。

To meet the needs of detection of space faint objects for a telescope with large aperture and short focal,a binding drawtube telescope scheme to detect space object is presented to overcome the shortcomings that focal length grows and field of view shrinks with the increasing of aperture size in traditional telescope for space detection.The software methods are used to stack collected images to restrain background random noises and to improve image Signal to Noise Ratio and the detecting ability of the whole system.

为了满足空间暗弱目标探测对大口径、短焦距望远镜系统的要求，克服普通望远镜随着口径的增加焦距变长、视场变小的不足，提出了将多镜筒捆绑在一起对同一空域进行观测，通过软件的方式对采集的图像进行叠加来抑制背景随机噪声、提高图像的信噪比和系统的整体探测能力的设想。

We can make use of chip to analysis virus gene group; construct mutation detection technique of heredity diseases and become normal detection technique of many heredity diseases; supervise the changes of cell gene expression, research pathogenic theory of virus; differentiate bacteria gene types and identify bacteria strains, provide base data for screening and supervise drug-fast gene.

利用基因芯片可加速对病毒基因组的功能分析；可建立遗传病的突变检测技术，并成为对多种遗传病的常规诊断技术；可用来监测宿主细胞基因表达的改变，研究病毒的致病机理；基因芯片还可用来对细菌基因的分型和菌种鉴定，为筛选和监测细菌的抗药性基因提供基础数据。

We can make use of chip to analysis virus gene group; construct mutation detection technique of heredity diseases and become normal detection technique of many heredity diseases; supervise the changes of cell gene expression,research pathogenic theory of virus; differentiate bacteria gene types and identify bacteria strains,provide base data for screening and supervise drug-fast gene.

目前我国在出入境检验检疫中，已开始在基因芯片技术检测传染病病原方面开展了研究工作，国家质检总局动植物检疫所研制出了检测SARS病毒的全基因芯片，极大的促进了出入境检验检疫检测技术的发展，但目前国内外尚未见到有关新城疫病毒基因芯片的报道。

Methods:a solid-phase extraction and gas chromatography-mass spectrometry procedure for the simultaneous detection of tramadol and its main metabolite in urine has been developed.results:the linearity of the tramadol solution from 0.1 g/ml to 100 μg/ml is fine ,and correlation coefficient is 0.9957.the average recovery was 99.21%,and the relative sandard deviation was 2.83%.conclusion:it is a rapid,simple,accurate and sensitive method.it is also an effective method for rapid detection whether there is tramadol in urine of druggy.

采用c18固相萃取法对尿中曲马多原体及其主要代谢物进行提取，利用gc-ms对其进行检测。结果：线性范围为0.1~100μg/ml（r=0.9957，n=6），平均回收率为99.21%，相对标准偏差为2.83%，最低测量限为 0.1 g/ml 。结论：本实验研究建立了尿中曲马多及其代谢物的快速、简便、准确、灵敏的检测方法，可作为快速检测吸毒人员尿中是否含有曲马多的一种有效的方法。

The research work of this paper includes the following several respects mainly: 1, Introduce the method of dubiety excluding to the traditional face detection algorithm based on the model of faces' color, which have improved the accuracy rate of face detection greatly through this method.

提出了一种基于局部几何特征的人脸特征提取算法，根据人脸器官的位置及色彩特征，改进了普通算法在阴影较大的情况下识别率急剧下降的问题。

The harm of worms' outbreak becomes greater and greater. Such make worm detection and defense technology face an increasingly tough challenge. Attack Signature Automatically Generation technology is one of the key technologies, this paper focuses on the ASAG technology for research, its main jobs include: 1）Analyzed the research status of ASAG technology from the overall, described its design goals and evaluation criteria, and the current approaches' limitations is given. 2） After deeply researching and analyzing a various of ASAG systems, a basic framework for the network ASAG system is presented, and the detailed analysis of the main function of the components in the framework is also presented. 3）An attack capture model based on distributed honey-pots system is presented. This mode integrates the anomaly detection which based on the mode of dubiety score in the honey-pots, can do a second filter for the samples in honey-pots, and improve the purity of the samples captured. 4） A simple noise-resilience ASAG algorithm is presented, which used the behavioral characteristics of the worm outbreak to generate efficient signatures of samples in the suspicious dataset, which contains large amounts of noisy data, under the complex environment.

攻击特征自动提取技术是网络蠕虫防御技术的关键技术，本文围绕攻击特征自动提取技术开展研究工作，其主要工作包括： 1）对攻击特征自动提取技术的研究现状进行了综述，介绍其设计目标与评价标准，并指出了现有方法存在的局限性； 2）在深入研究与分析各种攻击特征提取系统的基础上，提出基于网络的攻击特征自动提取系统的基本框架，并详细分析框架中各部件的主要功能； 3）提出了基于分布式蜜罐系统的攻击样本捕获模型，该模型在分布式蜜罐系统的基础上，结合基于可疑度模型的异常检测，对蜜罐中的样本进行二次过滤，较好地提高了捕获样本的纯净度； 4）提出一种简单抗噪的攻击特征自动提取算法，该算法利用蠕虫爆发时的行为特征，在复杂环境下含有大量噪声数据的可疑样本训练集中提取有效的特征，降低对样本纯净度的依赖。

To create a dynamic update mechanism, its technical core of which is "change detection", while the current home and abroad for change detection has been a lot of research, but most of the elements is part of a small number of tests, from the utility still a very long distance.

要建立动态更新机制，其技术核心是"变化检测"，虽然当前国内外对于变化检测已有大量的研究，但多数是对部分要素的少量试验，距实用尚有很长的距离。

DEM Edit is the key process of the DEM data produce. Based on the analysis of the DEM data Error, this paper using the lowpass filtering method to eliminate the Random Error of DEM data, using the partial slope information detection and whole trend surface detection to detect DEM Gross Error.

DEM编辑是DEM数据生产的重要环节，本文在分析DEM数据误差的基础上，采用低通滤波的方法降低随机误差的影响，利用局部坡度信息和整体趋势面方法，实现DEM粗差的自动检测。

Finally it offers the analysis of the fault-tolerance system as well as its test verification.

这样，运行于空间环境中的系统的设计目标就是在保证系统实时性

However, it is still difficult to find out the real reason of the increase of the keratinized gingiva during the orthodontic extrusion whether it is due to the proliferation of the gingival tissue or to its elastic nature, that is because the proliferation of the fibroblasts as well as the connective tissue changes in volume and the intra-fibers spaces were all immeasurable in most of the studies.

然而，仍然难以找到真正的原因增加的角化牙龈在正畸挤压它是否是由于扩散的牙龈组织或其弹性性质，这是因为增殖的成纤维细胞以及作为结缔组织的变化量和内部纤维空格都是不可估量的，大多数的研究。