| 1. | 3 . set up a coordinate transforming relation between image coordinate and dimensional coordinate . 4 建立了坐标转换关系,实现了图像坐标系与空间坐标系的位置转换; 4 |
| 2. | A 2 - d multinomial geometric correction quadratic model was used to correct the geometric distortion of images , and a file contents 6 parameters was used for images coordinates register . 5 遥感图像的几何校正采用一个二次多项式模型实现,来消除平移、缩放、旋转、仿射与弯曲等图像变形;遥感图像的坐标配准采用参数文件的方法进行。 |
| 3. | The landing site coordinate system is first defined from the image coordinates of three feature points obtained using an optical navigation camera and the distances from the spacecraft to each fp measured using a laser range finder 首先利用特征点的图像坐标和探测器到三个特征点的距离信息构建了着陆点坐标系,确定了探测器相对着陆点坐标系的位置和姿态。 |
| 4. | In image - based , also called feature - based systems , the error signal is defined in terms of image features and is directly measured in the image coordinate system . therefore , computational costs are significantly reduced and the system becomes less sensitive to abstract errors in camera calibration and system modeling 误差信号按照图像特征来定义而且直接在图像坐标空间来测量,因此可以大大降低计算量,而且系统对相机标定误差和系统建模误差不敏感。 |
| 5. | In view of the altitude problems of inspecting the weighted average ways of obtaining altitude and the advantages and disadvantages of moving surface interpolation method are talked about through comparison , with which the writer draws a conclusion that moving surface interpolation method is suitable to be applied for the dynamic state inspection places , , moreover the key technology about the dynamic slate inspection is also taken into consideration , which includes digital camera and types of camera lens , the cause of camera lens distortion and the fundamental determining principle , the gain of image coordinate and the realization of time synchronization 针对检定点高程问题,分析比较了获取高程的加权平均法和移动曲而内插法的优缺点,得出移动曲面内插法适合用于动态检定场的结论。特别是针对动态检定的关键技术给予了相关研究,内容涉及:数码相机及相机镜头的选型,相机畸变差产生原因及测定的基本原理,像片坐标获取以及时间同步实现,得出结论:利用gpsoem板的秒脉冲( 1pps )输出特性,能够实现两台数码相机与gps接收机时间同步,满足动态检定指标要求。 |
| 6. | Image coordinate and galvanometer pendular angle are kept in the computer according to the f9 field lens characteristic , enter pupil excursion and f6 characteristic error are ignored , that the image of laser scanning point move acceding to unlinearity relation is deduced theoretically . for deducing the distortion , error compensation is considered in the software 像点坐标与振镜摆角按f物镜特性的线性关系存储在计算机,在忽略了入瞳漂移和f特性误差后,从理论上推导出二维垂直振镜分布中激光束扫描点的像点按照复杂的非线性关系运动,为了减少几何畸变,在软件设计中给出误差补偿。 |
| 7. | The image of the curve is obtained by planar ccd system . the author independently works on : ( 1 ) the image processing : ( 2 ) the imaging model of the ccd cameras , that is the coordinate transforming relationship between the image coordinates and the corresponding world coordinates : ( 3 ) the method of curve connection : ( 4 ) the experiments of the figures of the wheel trackside profile and calculation of the flange thickness related to the wheel wear 作者独立完成的工作包括: ( 1 )对车轮轮廓的激光曲线图象进行处理; ( 2 )建立了左、右ccd摄像机的实际摄像模型,推导出图象坐标到物方实际坐标的变换关系; ( 3 )研究了几种曲线拼接方法; ( 4 )通过实验,应用曲线拼接方法确定轮廓曲线的形状,最终算出反映车轮磨损的重要参数。 |
| 8. | Image motion compensation ( imc ) is the key technology of high - resolution space camera . image motion speed is seperated into two vectors in image coordinate for the existence of the drift angle : the forward direction image motion speed and the crosswise image motion speed . in fact , drift angle control eliminates the crosswise image motion speed , so it is a part of image motion compensation 在空间照相,由于偏流角的存在,使得像移速度在像面坐标系存在两个分量:前向像移速度和横向像移速度,偏流角控制本质上是消除横向像移速度,因此,偏流角控制是空间相机像移补偿的一部分。 |
| 9. | It has designed a special method for finding circular center image coordinates and a subpixel digital image process method , so that the precision of simulation for searching image point of circular center can reach to 0 . 01 pixel in grade of amount . it has designed amending method for errors , produced by improper installation position of the testing device 在图像处理方面,本文设计了标志特征圆圆心位置的特殊方法和亚像素数字图像处理方法,使得特征圆圆心像点的仿真定位精度可达0 . 01个像素的数量级;提出了一整套围绕特征直径像的特性来寻找其端点坐标的方法。 |
| 10. | The vision system and sonar system of hebut - 1 mobile robot is designed . the model of camera and the conversion from obstacle image coordinate into the world coordinate is completed , which the information of obstacle is converted into camera coordinate . therefore the different coordinate are unified . experiment on segmentation are done and a method of image segmentation based of his color threshold is used for mobile robot ' s obstacle image segmentation 设计了hebut -型移动机器人视觉系统和声纳系统。建立了移动机器人的摄象机模型,从而完成了世界坐标系到摄象机坐标系的转换,使障碍物信息成功地转换到摄像机坐标系,完成了不同坐标系之间的统一。 |