摄像机

And to the end of 2009, market of camera of global IP monitoring will surmount traditional closed-circuit television camera market.

而到2009年末，寰球IP监控摄像机市场将超过传统的闭路电视摄像机市场。

A calibration model was established by introducing a planar target that could move freely with three collinear and known mutual location points. The calibration point coordinates in a camera coordinate system could be calculated by using the imaging information of three points and the light stripes on image plane of the camera.

引入一个可自由移动的平面靶标，靶标上只需要共线且相互位置确定的3个特征点，利用共线三点建立三点透视数学模型，根据3个特征点以及光条纹在摄像机像面的成像信息，获取了光平面上标定点在摄像机坐标系下的坐标。

Then this article paper illustrates the principle of the CCD camera with the color television camera.

然后以彩色电视摄像机为例介绍了CCD摄像机的工作原理。

An image conic can be the projection of either a planar conic or silhouette of a conicoid. We show that at least three images, taken from the same position with different camera orientations, of two planar conics, or two conicoids, or one conic and one conicoid, are needed for the calibration, and a closed-form solution can be obtained. Our new conic based calibration technique requires no knowledge of camera's orientations, and relies solely on image correspondences.

在不同的方位拍摄三幅或三幅以上图像，每幅图像至少包含两个空间平面二次曲线、或两个二次曲面、或一个平面二次曲线与一个二次曲面的投影，利用图像之间的二次曲线对应关系，可以确定摄像机的内参数矩阵，同时可以获得摄像机不同方位之间的旋转矩阵。

Research on calibration of cameras based on cross ratio invariability ;2. Firstly,order radial lens distortion parameters are computed by using cross ratio invariability .

该方法利用透视投影的交比不变性原理标定镜头的畸变系数，基于摄像机成像的单应性矩阵及内部参数的基本约束，线性标定出其他摄像机参数。

Camera parameters according to the correspondence of feature points both in the image coordinates and the world coordinates with the camera calibration technology was firstly caculated. Then the main position of light source was gotten from the two erectness object and their shadows. Finally, the illumination effect of the virtual object in the light source with the position of virtual object and camera parameter was computed.

首先利用球场的特征点在图像坐标系与世界坐标系上的匹配关系计算出真实摄像机的参数；根据摄像机参数和场景中已有的物体及它们的阴影坐标来恢复主光源；并计算出虚拟物体在所求光源下光照效果的过程。

On Image-Collecting, trapezoidal distortion is one of the most common distortion. We present a rectification method for it. In the case of knowing the focal distance and the size of CCD, the only parameter needed to know to restore the image is the angle of the camera axis with the ground.

摘要图像采集中的梯形失真是工程中最常见的失真之一，对此本文提出一种校正方法，在已知摄像机的镜头焦距和CCD大小的情况下，仅需要知道摄像机中轴线与地面的倾角一个参数，不需要控制点，就可以恢复原始图像。

A complete body and camera cutting procedures including cutting Frustum body type and the structur...

一个完整的裁剪体和摄像机程序，包括裁剪体类Frustum的构造及其判断是非在其内的方法等，还有摄像机的方法更新等，非常实用！

A complete body and camera cutting procedures including cutting Frustum body type and the structure in its judgment of the method, etc. there are ways to update the camera, a very practical!

一个完整的裁剪体和摄像机程序，包括裁剪体类Frustum的构造及其判断是非在其内的方法等，还有摄像机的方法更新等，非常实用！

They are both independent of scene structure and are determined by camera internal parameters and relative pose among images. The concepts and characteristics of fundamental matrix and trifocal tensor are described.

基本矩阵和三视张量分别表示两张和三张像片之间的内部投影几何关系，它与场景结构无关，由摄像机内方位元素和像片间摄像机的相对姿态唯一确定。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。