| 1. | Class to draw and position vector images and raster images
方法绘制和定位矢量图像和光栅图像。 |
| 2. | Hence , the problems concerning the expression of position vector in the global coordinate system and the local coordinate system , and the numerical area integration by the natural coordinates were solved thoroughly
这样，完善地解决了单元中任意点在整体坐标与局部坐标的表示问题和基于局部自然坐标的面积分和体积分的数值积分的依据问题。 |
| 3. | According to the geometrical characteristics of the transmission line and the theory of perspective projection , a stereo vision method based on single camera is presented to detect the orientation and position vector of the power transmission line
结合输电线的几何特征和摄像机成像原理，提出了一种基于单摄像机的立体视觉方法来确定输电线的位置和姿态。 |
| 4. | Order numbers for vehicles to freight were got by particle position vector , single vehicle route was got by aco , and then evaluated and filtered particales according to optimal vehicle routes , circulated until terminate qualification
由粒子群算法的粒子位置向量得到每辆车所需运送的订单号，用蚁群算法优化单车路径，根据优化的总路径评价和筛选粒子，直到满足终止条件。 |
| 5. | The research on autonomous navigation and orbital keeping technology of geosynchronous satellites : selecting position vector in the inertia space and longitude , latitude , radial errors in the hill equation as state variables , the precision of orbit determination caused by track dynamic model error , sampling period , and sensor measurement and install error is analyzed
同步卫星自主导航与轨道保持技术研究：分别选取惯性空间位置矢量和采用hill方程表示的经、纬、向径误差作为状态量，分析轨道动力学模型误差、采样周期以及敏感器测量、安装等误差对定轨精度的影响。 |
| 6. | Abstract : in this paper ， a ray - optics analysis is performed to investigate the asymmetry of dual beam scanning field produced by a rotating polygon . some basic equations of dual beam scan are derived ， such as ， the position vector for the incident point ， the scalar expression for reflected ray ， scan pattern on observation plane ect . the far - field asymmetry of the scanning field has been discussed
文摘:应用几何光学理论研究了多光束转镜扫描场的非对称性，导出多光束扫描入射点位置矢量、反射线标量表达式、观察面上的扫描轨迹方程，并研究了扫描远场的非对称性。 |
| 7. | The main work completed in the paper is listed as following : 1 . image function acquisition - , 2 . read bmp files by dib format ; 3 . drawing gray scale histogram ; 4 . choose a optimum threshold and make gray image become binary image - , s . find image ' s contour points by making inner points become empty and apply template matching on the contour points ; 6 . transform the object ' s beginning points ( pixel point ) to the ones in the image coordinate and the positions of in the corresponding three dimensions ; 7 . compute the position vector and the normal vector of the object
选择一个最佳阕值，把灰度图像进行二值化处理； 5用掏空内部点法，找到图像的轮廓点，然后在轮廓点上进行模板匹配； 6把输出的目标物开始点(像素点)转化成图像坐标系中的点和对应的三维空间的坐标位置； 7计算目标物的位置矢量和法向矢量，根据机器人抓取面的法向矢量，找到机器人要抓取的平面； 8 |
| 8. | Using position vector fields , the strain field relating source and target shapes can be obtained . by interpolating this strain field between zero and a final desired value we can obtain the position field for intermediate shapes . this method ensures that the 3d morphing process is smooth
算法具体步骤如下：首先通过原始形状和目标形状的位置场，计算出原始形状和目标形状间的应变场然后对原始形状和目标形状间的应变场进行插值，得到中间形状的应变场最后由中间插值应变场反推得到中间形状。 |
| 9. | Based on above performances the applications of multi - sensor data fusion in state estimation for maneuvering target is studied systemically . the main work includes : based on the analysis that the extreme value of acceleration presupposed causes influence in the “ current ” statistical model , a modified model is given , which utilizes the functional relationship between maneuvering status and estimation of the neighboring intersample position vector to carry out the self - adaptive of the process noise variance . then combining with the recursive characteristic of kalman filter , an improved self - adaptive filtering algorithm is presented
基于此,本文针对多传感器数据融合技术在机动目标状态估计中的应用进行了系统的研究,其主要工作如下: 1 、基于“当前”统计模型中加速度极限值的预先设定对于滤波效果影响的分析,利用目标机动状况与相邻采样时刻间位置估计量变化之间的函数关系实现噪声方差自适应,进而提出了一种修正的模型,并结合卡尔曼滤波递推算法,提出了一种改进的自适应滤波算法。 |
