Contraposed those characteristics of leather , after studying all kinds of algorithms of image segmentation , this dissertation chooses the techniques of thresholding methods of parallel region segmentation and edge tracing methods of serial edge segmentation to detect the contour of the leather image . then by using polygonal approximation method , we can convert the contour ' s form from image into graphics . it will make following arrangement works more convenient 本论文针对皮革图象的上述特点，在对各种图象分割算法进行研究后，选用了并行区域分割中的阈值化技术及串行边界分割中的轮廓跟踪技术，将皮革图象的边缘轮廓检测出来，并对该轮廓进行多边形拟合，使其由图象转换为图形，以便为后续排样工作提供方便。
* the sixth chapter presents a tool wear area image segmentation algorithm based on markov random field m odel . the refresh formula of relaxation labeling is deduced . with the algorithm , the segmentation result composed of wear area , background area and tool body area is obtained according to the map ( maximum a posterior ) criterion 第六章以马尔可夫随机场理论为基础，提出刀具磨损区域分割算法，推导了松弛迭代更新公式，并用该方法对图像分割问题进行求解，获得了map准则下将刀具图像的分割结果。
The computer acquires the image of dial gauge by high precision ccd video , after that the computer will process the dial gauge image by some image - processing algorithms such as image segmentations , edge searching , area segmentations and locating the pointer by the " circle " . at last the computer will recognise the dial pointer position and work out the precision of dial gauge in accordance with nation criterion of dial gauge . this study presents several optimum algorithms to realize quick recognition of the pointer and calibration lines of detected dial and improve the accuracy and real time quality of detecting 本系统由计算机控制步进电动机的运动，进而驱动指示表表针的运动，通过高精度ccd摄像机实时获取表盘图像数据，同时进行表盘图像的相关处理，包括阈值分割、边缘检测、图像锐化以及区域分割和定心圆检测等，最终快速识别出表盘指针所处位置，最后根据国家指示表类检定规程所制定的算法检定出指示表的各种精度，本系统所采用的图像处理算法运算量少，速度快，从而大大提高了系统的实时性。
A systematic summary of previous work has been given first . then this paper presents a novel multi - stage face detection algorithm , which makes a good use of human face pattern ' s valuable information in colour image sequences . the difficult detection task has been divided into four steps : the preprocessing , which is to gain skin colored regions with human skin color model ; the roughly detection and face region refining by elliptic curve fitting ; the fine detection with facial features " detection and location ; the face / non - face classification step based on pca and gaussian density estimation technique 本文对彩色序列图像中的人脸检测和跟踪技术进行了深入的研究，其具体内容为：对近年来的研究工作进行了系统的介绍；提出了一个由粗到细的多阶段的人脸检测算法，该算法充分利用了序列图像中人脸模式的各种有用信息，将复杂的检测工作分为了四个部分：肤色区域分割预处理，人脸粗检及利用椭圆拟和的人脸区域提炼，应用人脸基本特征检测和定位的人脸细检， pca结合高斯概率密度估计的人脸验证。
Based on the analysis of the application character , we put forward a system scheme of impurity detection in liquid on the basis of video frequency , and finished the combination and construction of imaging system , and designed the detection frame of software system ; we analyse the feature of liquid image , region segmentation and location of liquid was realized ; we compare the various motion detection methods , founded on the feature of liquid image sequence , and present a targets extraction algorithm on the basis of successive three frame images ’ frame difference , the algorithm has the advantage of real time and accurate detection ; we analyse the feature of noise , and present appropriate methods of eliminating noise 本文在分析了本应用特点的基础上,提出了一种基于视频液体杂质检测的系统方案,完成了成像系统的搭建,给出了软件系统检测框架;分析了液体图像特征,实现了液体区域分割和定位;分析比较了各种运动检测方法,根据液体序列图像的特点,提出了一种基于连续三帧图像帧差的目标提取算法,该算法具有实时性好、检测率高的特点;分析了噪声特征,提出了适合的去除噪声方法。
Introducing and comparing the difference within the conception of area segmentation , motion segmentation and moving object segmentation vop extraction , and their application in content - based video sequence image coding . analysis the relationship between the frame difference image and its relative frame gray level image . then a new automatic moving object edge tracking and extracting method , based on the high correlation between the edge of frame difference and the edge of gray level image , was proposed . using the close of moving object edge to get the real moving object 介绍比较区域分割运动分割和物体分割的概念及其在视频序列图像分割中的应用。分析说明各种运动状态下帧差图像与相应帧灰度图像的关系。提出了基于帧差图像边缘与灰度图像边缘之间强相关性的运动物体边界自动跟踪提取算法。
The image segmentation method based on his color threshold has many advantage : strong antinoise ability , using more information during image processing , perfect segmentation result without being affected by illuminative condition , and simple calculating process . all these advantages improve the segmentation speed and veracity of complicated obstacle image 对各种图象分割方法进行了实验，将基于hsi空间颜色阈值的区域分割法应用于移动机器人障碍物图象分割，该方法抗噪声能力强，所利用的信息量大，不受光照条件变化的影响，运算简单，提高了复杂路面图象分割的准确性和实时性。
Using vc + + 6 . 0 as the development platform , the system combines the common processing and analyzing image by means of image geometry change , process enhancement , edge detection , region segmentation , feature extraction and so on . based on the image processing and recognition , the system realizes the functions of color recognition , shape recognition and inspection under the laboratorial environment 课题主要使用的开发平台为vc + + 6 . 0 。系统集成了图像处理和分析的常用算法,包括图像的几何操作,图像的增强操作,图像的边缘检测算法、图像区域分割、图像的形状参数提取等;并在此基础上实现了实验环境下零件颜色识别,形状识别和缺陷检测等功能。
Based on the model , we develop a cascading segmentation algorithm to separate the sar image into regions , so that each of these regions can be described by one of the single models . several sub - algorithms are developed for the cascading segmentation : the homogeneous region segmentation algorithm based on statistics hypothesis test , the line - like region segmentation algorithm and the strong scatterer segmentation algorithm 根据这些模型，建立了层次式的分割算法，将sar图像分割为若干个可以用单一模型描述的区域；设计了具体的分割算法：基于统计检验的平稳区域分割算法，强散射中心分割算法和线状区域分割算法。
This paper follows the disciplines of communication science , anthropology and sociology . it focuses on the administrative region in china and starts the research on the differences between media communication and regional culture communication . it reviews the close relationship between the general laws of mass communication and the expansion and development of local culture , unveils the mechanism of their mutual impact and points out the possible trends of their development 本文采取传播学、文化人类学和社会学的研究取向，主要以我国现行行政区划的区域分割为研究范畴，从传播与文化的区域性差别入手，考察在此范围内大众传播活动与本土文化扩散、发展的密切关联，并揭示其生成机制、可能性发展趋势及对区域发展的重要意义。
