月球车立体视觉的一种标定与三维重建算法
A Camera Calibration and Reconstruction Algorithm for Lunar Rover＇s Stereo Vision
张宏 齐乃明 侯建
为提高月球车视觉系统的摄像机标定和图像的三维重建精度，提出了一种基于多平面标定点的改进Tsai氏两步法，用线性重建算法对标定和匹配结果进行空间景物点的重建，根据最小二乘曲面拟合原理拟合视场区域的基本轮廓。对一标定模板的标定和图形的三维重建结果表明，该算法的精度高、速度快，可用于月球车立体视觉系统。[著者文摘]
To improve the accuracy of camera calibration for the stereo system of lunar rover and 3-D reconstruction, an amended Tsai＇s two-stage calibration technique based on multiple in-plane calibration points was put forward in this paper. The reconstruction for space scene was processed in using linear 3-D reconstruction algorithm according to the calibration and match. The least-square method was used to fit terrain surface in the field-of-view. The results of the calibration for a template and 3-D reconstruction of some picture showed that this algorithm was fast and had high precision, which was feasible for lunar rover＇s stereo vision.[著者文摘]
一种自动摄像机标定方法的实现
Design and Implement of an Auto Camera Calibration Method
程宏伟 黄文清 汪亚明
提出一种自动摄像机标定方法。首先介绍如何结合Harris角点检测器和Chen的亚象素提取算法精确地求取特征点的亚象素位置,然后分析利用透视投影变换矩阵自动提取特征点位置,最后结合T-sai的标定方法给出了实验结果,验证了方法的有效性。[著者文摘]
This paper proposes an auto camera calibration method. First it introduces how to combine the Harris corner detector and the Chen sub-pixel obtaining method to find the feature corner. Then the paper analyses the transformation of perspective projection to be used for automatically finding the other feature corner. Finally, a calibration experiment is given to testify the validity of this method.[著者文摘]
基于单个正方形的摄像机自标定算法
Camera Self-Calibration Algorithm Based on Single Square
蓝慕云
提出一种基于带对角线正方形作为平面标定模板的自标定算法机理，只需摄像机作三次运动参数未知的自由运动并摄取正方形模板在不同方位的三幅图像，即可线性求解摄像机的内外参数。实验表明，该算法能够较准确的标定出摄像机内参数，具有较高的鲁棒性。[著者文摘]
Proposes a self-camera calibration mechanism founded on a single square planar pattern. It only requires the camera to have three unknown moving and take the pictures, and have the linear solution for the intrinsic and extrinsic parameters of the camera. Experiment result indicates the calibrated algorithm is more accurately demarcate the camera parameter and has hiker robustness.[著者文摘]
CCD摄像机图像中心两种标定方法的应用研究
Applications of Two Types of Calibration Method to CCD Camera＇s Image Center Measurement
王锋[1,2] 周仁魁[1] 杨小许[1,2] 陈敏[1,2] 邹永星[1,2] 罗秀娟[1] 曹剑中[1] 周泗忠[1] 聂浩之[1]
应用两种方法对CCD摄像机的图像中心进行标定；其中直接光学方法根据因镜头畸变造成的像索点在像面水平和垂直两个方向上分布的对称性得到图像中心；基于镜头畸变的透视投影方法利用具有精确定位点阵的平面模板及其在不同方住所成图像，标定出摄像机的内外参量，其中包含图像中心．标定过程考虑了两种主要的镜头畸变，针对某型摄像机及镜头，试验得出关于两种方法的适用性和优缺点，并验证了后一种方法的强收敛性。[著者文摘]
The practical applications of two types of calibration method to CCD camera＇s image center measurement were researched. With regard to image center, pixels＇ distribution on image plane is still symmetrical even under the influence of lens distortion. Based on this, in direct optical method, the image center is judged by the symmetry of pixels＇ position in vertical and horizontal directions on image plane. In lens distortion based perspective projection method, a complete imaging model could be constructed and image center is one of the parameters in the model. Two kinds of main lens distortion are considered in the model. Tests were done and the comparison was made for two methods. The second method＇s strong convergence property was confirmed.[著者文摘]
基于计算机视觉的公交系统人流量检测算法
Pedestrian Flow Detection Algorithm in Public Transport System Based on Computer Vision
潘浩 高枝宝 何小海 殷俊琳
提出了一种基于计算机视觉的公交系统人流量检测方法。通过分析现场行人视频数据，运用图像处理的方法提取图像中通行的行人以及通过视场内的人流量，阐述了复杂背景、低分辨率和特殊拍摄角度条件下的人头特征曲线提取算法和基于部分椭圆弧的椭圆模板参数估算法，试验结果表明了该算法的正确性和有效性。[著者文摘]
A Pedestrian flow detection method in public transport system based on the computer vision is presented. By analyzing the video data of the spot pedestrian flow and using the techniques of the image processing, the pedestrian flow through the field of vision can be extracted from the video image. The algorithm of extraction of human head characteristic curve against a dynamic background low definition and specific shooting angle is presented. And the parameter estimating of ellipse template through partial ellipse is presented. The results show that the algorithm is correct and efficient.[著者文摘]
计算机软件开发工具的集成和应用研究
孟德斌[1] 陈涵生[2] 等
主要探讨了如何针对不同的软件开发机构特点，构造与之相适应的计算机辅助软件工程（CASE）工具支持的集成化开发环境，用以支持软件开发机构的软件开发过程。
用VC＋＋6．0开发计算机与GPS通信的应用程序
李宗标 Barkoch Abdelaziz 等
介绍了GPS的数据采集格式，和在Windows95以上环境下，用VC＋＋6．0开发基于Windows消息机制的多线制的多线程的GPS应用程序，并给出了一个实例。