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Study on UAV Borne Dual Combination of Wide Angle Digital Camera Image Data Processing Methods

Author: LiuHongCheng
Tutor: LinZongJian；JiangTao
School: Shandong University of Science and Technology
Course: Photogrammetry and Remote Sensing
Keywords: base-height ratio dual combination of wide angle digital camera image matching precision index work criterion
CLC: P231
Type: Master's thesis
Year: 2011
Downloads: 145
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Abstract


Owing to the restriction of platform’s volume and weight, UAVRS can only use single camera system with stable platform presently. Single digital camera’s coverage and base-height ratio is small, which increase the interior and field workload, moreover, the elevation accuracy is rather low. So, using Multi-Format mosaic technology, increasing the format size has become a research focus recently. In such a case, we research the UAV Borne Double Camera Law Altitude Photogrammetry System. This paper put emphasize on image processing methods, which base on its composition and dual combination of wide angle digital camera design principles.The captured image has problems such like small format images, excessive quantities of images, over tilt angle of images, irregular overlap etc. These problems exist brings a whole series of trouble into image matching, image relative orientation, absolute orientation and some other relative subject. This paper put emphasize on study the UAVRS image of aerial triangulation, study the method of UAVRS image matching, how to improve the accuracy validity of different scale and different grey level image matching and over tilt angle of images, discuss the solution of eliminating gross error.1. Discuss the methods of build UAVRS image block, and give the mathematical model of block adjustment with weights observation data. Give an operation methods, operation technique procedure and standard operation regulation. The paper offer precision index in every phase, and discuss the effective element that made by the fieldwork to offices data processing, and give the improvement solution.2. Design an experimentation system of data processing in UAVRS image, for experimentation of relief stereomapping. Discuss the possibility of stereomapping and accuracy that UAVRS image after photogrammetry processing, do UAVRS image DEM experiment, study the creation of Ortho-Image and standard operation regulation and also the accuracy that the Ortho-Image can reach.At last, through experiments the paper proved that and the the UAV Borne Double Camera Law Altitude Photogrammetry System can achieve 1:1000 scale aerial photographic tasks. The way of width mosaic has an advantage in the aspect of improve elevation metric precision.

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CLC: > Astronomy,Earth Sciences > Surveying and Mapping > Photogrammetry and Surveying, Mapping and Remote Sensing > Aerial Photogrammetry
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