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Airborne height measurement technique of multiple angles imaging

A multi-angle, imaging system technology, applied in the direction of measuring devices, surveying and navigation, photogrammetry/video metrology, etc., can solve the problems of increased workload and uncontinuable work, and achieve high precision, smooth system operation, and image quality high quality effect

Inactive Publication Date: 2011-02-16
BEIJING NORMAL UNIVERSITY +3
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the increased workload caused by the use of ground control points in the traditional photogrammetry process, and even the difficulty that the work cannot continue due to local special conditions in some areas

Method used

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  • Airborne height measurement technique of multiple angles imaging
  • Airborne height measurement technique of multiple angles imaging
  • Airborne height measurement technique of multiple angles imaging

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Embodiment Construction

[0026] According to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, a better embodiment is provided, the hardware part uses 3 CCD cameras, three image acquisition cards and three groups of hard disk arrays as data acquisition sources. In the software part, the whole processing flow is divided into level 1 and level 2 data processing. Level 1 processing is data preprocessing, and level 2 processing is data correction and DSM generation.

[0027] Please refer to Figure 1 first. Fig. 1 is a structural schematic diagram of the airborne multi-angle altimetry technology system of the present invention, and the whole system is divided into two parts of hardware and software. In the hardware part, the multi-angle imager and the attitude measurement device are fixed on the rigid platform. They use the synchronization pulse obtained by synchronous control to realize the synchronization of data acquisition and recording. The image data and attitude information are recorded in real time through data ...

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Abstract

A height measuring technique of airborne multiangle-imaging includes hardware system comprising three high performance digital cameras, platform, POS, GPS, DCRS and MCU; software system applying process as carrying out pretreatment on image collected by hardware, using air triangular measurement balance to obtain external orientation element of revised image, calculating out accurate DSM and carrying out relevant height measurement based on said external orientation element.

Description

technical field [0001] The invention belongs to the field of topographic surveying and mapping through photogrammetry technology, in particular to a photogrammetry technology using an airborne multi-angle imaging system supplemented by a GPS / POS position and attitude measurement device. Background technique [0002] Aerial photogrammetry is the main means of obtaining basic geographic information. Its results are not only the main data source for measuring and updating the national basic scale topographic map, establishing and updating the national basic geographic information system database, but also an important form of basic surveying and mapping results. [0003] Aerial photogrammetry is a science and technology that uses airborne imaging devices and other sensing systems to obtain topographic images and reliable information about the earth and its environment, and to record, measure, analyze and express them. That is to use the aircraft to take pictures of the ground, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C11/00G01C11/34
Inventor 阎广建汪骏发刘强苏林王鹏新张吴明刘峻明肖志强
Owner BEIJING NORMAL UNIVERSITY