图像

ABSTRACT Objective To discuss the importance of the study of conformation and variation of extrahepatic bile duct before gallbladder operationMethods The images of 100 cases having normal structure of gallbladder and extrahepatic bile duct were studied;the conformations and confluence sites were analyzedResults Among the 100 cases,97 cases had clear images of extrahepatic bile duct (97%),3 cases with large amount of air bulbs in bile duct because of the laxation of the lower common bile duct still had clear images of the general conformation of extrahepatic bile duct,87 cases had clear images of gallbladder and cystic duct (87%),13 cases (13%) had partial images of gallbladder or cystic ductConclusions ERCP can clearly show out the conformation and variation of extrahepatic bile duct and cystic duct and it is of important value before gallbladder operation

目的 通过对100例胆囊及肝外胆管正常结构尚存在的患者ERCP图像资料进行归纳和分析，探讨胆囊手术术前了解肝外胆道系统形态及变异的重要性。方法选出100例胆囊及肝外胆管正常结构尚存在的患者图像，对其形态、汇合位置进行分析。结果 100例患者图像中肝外胆管显示清晰者97例(97%)，3例因胆总管下端开口松弛导致大量气泡进入胆道，但肝外胆管大体形态显示尚清晰，胆囊及胆囊管显示清晰者87例(87%)，13例(13%)仅部分显示胆囊或胆囊管。结论 ERCP可以清晰显示肝外胆管及胆囊管的形态及变异情况，对于胆囊手术术前了解肝外胆道系统形态及变异有重要价值。 ERCP；胆囊管；肝外胆管

Basic theory of geometric active contour model is studied. With the virtue that can change the topology freely, geometric active contour model can be used for medical image processing based on curve evolvement and level set method.

根据Mumford-Shah模型利用图像的全局信息、不受图像梯度影响的特点并针对脑肿瘤分割的难点，将Mumford-Shah模型应用于脑肿瘤轮廓的提取，先采用非线性滤波消除噪声的影响，通过优化该模型的能量函数，可以获得受噪声影响的图像的边界。

The SV vectors are then lexicographically sorted, and copy forgery regions are localized by detecting for all neighborhood vectors.

盲被动图像取证技术的研究具有非常大的挑战性，因为分析图像时不具备任何先验知识，难以确定用来检测图像伪造的特征。

Typically these methods find a set of basis images and represent faces as a linear combination of those images.

这些无监督统计方法找出一组人脸基图像，然后用这组基图像的线性组合来表示人脸图像。

In this article a method based on edge extraction, linear image transformation and histogram modification is proposed to address the mentioned problem.

针对图像变形问题，我们分析了扫描图像变形的几何模型，提出了基于边缘提取和线性变换的图像纠正计算公式。

The invention discloses a vehicle speed matching method based on linear array CCD image, including the following steps that: two linear array CCD video cameras are respectively arranged on two sections positioned on a road at intervals; both linear array CCD video cameras face downwards and are provided with infrared ray laser source; the frame rate of each CCD video camera is more than 1,000 frames per second, and the resolution is more than 1,024 lines; correlation matching computation of the image sequences obtained by both linear array CCD video cameras is carried out to obtain the time difference of the same object in two image sequences; finally, by means of the time difference and the distance between both cameras, the driving speed of an object vehicle can be obtained according to the velocity formula V=s/t.

本发明公开了一种基于线阵CCD图像的车辆速度匹配方法，该方法在道路相距一定距离的两个断面上分别安装两个线阵CCD摄像机，两个线阵CCD摄像机指向垂直向下，线阵CCD摄像机上配有红外线激光源，线阵CCD摄像机的帧速率大于1000帧/秒，分辨率大于1024线；对两个线阵CCD摄像机得到的图像序列进行相关匹配计算，从而获得同一个目标在两个图像序列中的时间差，利用该时间差和两个摄像机的距离，根据速度公式V＝s/t即可以得到目标车辆的行进速度。

Image weaves: Image can more those who experience a website is beautiful, it is can intuitionistic, vivid, the ground comes out the information expression of those literal beyond expression, the person that browse easily understands and accept, hold the processing of good image, can increase the viscosity of the website, make visit passenger flow to forget to return repeatedly, prefer your website.

图像编排：图像能更加体验网站的美观，它能直观、生动，地把那些文字无法表达的信息表达出来，易于浏览者理解和接受，把握好图像的处理，能增加网站的粘度，使访客流连忘返，更喜欢您的网站。

In this paper, we have done some work on lossless hyperspectral images compression as follows: First of all, we analyze the characteristic of hyperspectral images, and compare it with common images.

本文主要关注于高光谱图像的无损压缩，所做的工作如下：首先分析了高光谱遥感图像的特性，将它和普通图像进行比较。

It is a great challenge for military image communication technology to preserve the auto target recognition performance in the process of lossy image compression.

如何在图像有损压缩过程中保持图像的自动目标识别性能，是军事图像通信领域面临的重要挑战。

Two-dimensional graphics are the eight-track player or even LP record of yesteryear. They will be soon replaced by 3D graphics as more of you perfect the art.

二维图像就好比过时的8声道播放器，或是隔年的LP唱片，随着您对图像艺术的要求越来越高，它将很快被三维图像取代。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐