共查询到19条相似文献,搜索用时 46 毫秒
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智能摄影测量机的研制 总被引:1,自引:0,他引:1
基于智能摄影测量的理论,目前正处于实验中的一台智能摄影测量机是这样组成的i在一个基线架上设置两个相机,每台相机都需要设置闭环控制的姿态调整机构,在此基础上相机的姿态调整、摄影及图像处理工作都在一台计算机控制下完成,从而使信息的采集与处理成为一个智能主体,这使得摄影测量的过程与计算机视觉中的主动视觉和人工智能中的智能主体实现了交汇和融合。 相似文献
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单杰 《武汉测绘科技大学学报》1998,23(4):377-382
从引入空间投影变换的概念入手,证明了体积之交比为一般的投影不变量,从而将其作为描述物体的度量。通过对基础矩阵进行合适的分解,导出了确定投影变换模型之齐次坐标和投影坐标的方法。提出了三维直接线性变换用于由物体的投影变换模型进行物体重建。实验分析证实了分析理论和方法的正确性。 相似文献
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为了测量位于伊利诺斯州的昆西海湾景观斜拉桥的动力响应,实施了一项范围广泛的实桥环境振动的试验计划。测量中,用微机系统收集和分析环境振动的数据。在0-2Hz的频率范围内,总共识别了主梁结构的25个模态频率及其相应的振型。对阻尼比也做出了估算。试验数据清楚地表明,这里有很多间隔很小的模态频率和复杂的空间振型。桥塔的大多数振型与主梁的振型有关,说明主梁和桥塔结构间的相互作用较为明显。 相似文献
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立体视觉的摄影测量理论 总被引:1,自引:0,他引:1
单杰 《武汉大学学报(信息科学版)》1998,23(4):377-382
从引入空间投影变换的概念入手,证明了体积之交比为一般的投影不变量,从而将其作为描述物体的度量。通过对基础矩阵进行合适的分解,导出了确定投影变换模型之齐次坐标和投影坐标的方法。提出了三维直接线性变换用于由物体的投影变换模型进行物体重建。实验分析证实了所述理论和方法的正确性。 相似文献
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本文结合人眼立体视觉原理与摄影测量理论及计算机图形学的三维可视化理论分析了立体显示与量测的实现原理,并结合C++语言、OpenGL、DirectX图形库进行了验证,并取得了一些效果,为地理信息数据拓展服务提供了一些尝试。 相似文献
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利用E1纠正仪摄影取手腕关节标本立体像对 总被引:1,自引:0,他引:1
本文针对人手腕关节面形态测量,提出了利用E4纠正仪摄影以获取人手腕关节标本立体像对的方法。在简述摄影技术方案的同时,对最佳摄影式线,摄影系数,摄影景以及摄影测量精度等问题进行了探讨。 相似文献
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J. Dold 《The Photogrammetric Record》1998,16(92):199-212
In the past few years the automation of digital industrial photogrammetric systems has increased dramatically. Due to digital image processing software, coded targets and automatic matching methods, a huge number of photogrammetric measurement tasks can be fully automated. In many cases a "one button click" is enough to provide the three dimensional co-ordinates of measured points without any manual interaction, immediately after acquiring the images. The technology of intelligent cameras is a logical step towards automated photogrammetric measurements. An intelligent camera, which has an integrated computer, analyses the image immediately after it is taken. This technology provides not only a much shorter processing time for the images but also more control over the measurement process just when it is needed, during image acquisition. This takes place in the form of real time feedback.
This paper describes the role of a digital intelligent camera in the automation of an industrial photogrammetric measurement system and gives an overview of existing automation techniques in industrial photogrammetry. As an example of an intelligent camera, the performance of the new INCA digital intelligent camera, developed and manufactured by Geodetic Services, Inc. (GSI) and distributed by Leica, is described. 相似文献
This paper describes the role of a digital intelligent camera in the automation of an industrial photogrammetric measurement system and gives an overview of existing automation techniques in industrial photogrammetry. As an example of an intelligent camera, the performance of the new INCA digital intelligent camera, developed and manufactured by Geodetic Services, Inc. (GSI) and distributed by Leica, is described. 相似文献
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This paper describes the structure, geometric model and geometric calibration of Photogrammetron I—the first type of photogrammetron which is designed to be a coherent stereo photogrammetric system in which two cameras are mounted on a physical base but driven by an intelligent agent architecture. The system calibration is divided into two parts: the in-lab calibration determines the fixed parameters in advance of system operation, and the in-situ calibration keeps tracking the free parameters in real-time during the system operation. In a video surveillance set-up, prepared control points are tracked in stereo image sequences, so that the free parameters of the system can be continuously updated through iterative bundle adjustment and Kalman filtering. 相似文献
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PANHeping ZHANGChunsen 《地球空间信息科学学报》2003,6(2):48-54
This paper describes the structure,geometric model and geo-metric calibration of Photogrammetron I-the first type of photogrammetron which is designed to be a coherent stereo photogrammetric system in which two cameras are mounted on a physical base but driven by an intelligent agent architecture.The system calibration is divided into two parts:the in-lab calibration determines the fixed parameters in advance of system operation,and the insitu calibration keeps tracking the free parameters in real-time during the system operation.In a video surveillance set-up, prepared control points are tracked in stereo image sequences,so that the free parameters of the system can be continuously updated through iterative bundle adjustment and kalman filtering. 相似文献
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一种新的GIS智能分析框架——GIS智能体 总被引:1,自引:0,他引:1
提出了GIS智能体(GIS intelligent agent, GIS- IA)的概念、结构及实现原理。实例研究表明,基于GIS IA的智能分析框架是实现空间决策分析的一种有效途径。 相似文献
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李芹 《测绘与空间地理信息》2008,31(3)
针对传统摄影测量像片调绘中存在的效率低、要求高的问题,设计了新的外业调绘生产工艺流程,从理论上提出了自由网平差方式和完全无控制作业方式的模式,并在实验中进行了验证。基于新的调绘生产工艺流程可以很好地降低生产成本,提高生产效率,保持内外业数据的一致性,提高作业人员的专业技能。 相似文献
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测绘仪器的更新发展,使得航测法成图的作业手段也发生了很大的变化,按照当前的规范来约束新技术条件下的作业,会造成人力、物力的浪费。本文从外业像控区域网的大小方面着手,进行实验分析,获取一定的实验数据并总结出数字摄影测量技术条件下1∶50000成图区域网布设方案的相应参数。 相似文献