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Study on the Auto Select Dimension Model of Grey and Its Application in Tunnel Deformation Monitoring

Author: FengShengFeng
Tutor: ChengPengGen
School:
Course: Cartography and Geographic Information Engineering
Keywords: DOM mosaic line adaptive is looking buffer buffer rapid integration
CLC: P237
Type: Master's thesis
Year: 2013
Downloads: 141
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Abstract


In recent years, with the rapid development of computer technology, remote sensingdigital image processing has been rapid development. With the various industries on thedigital orthophoto Map need the greater and the UAV aerial photography job fast andflexible, timeliness, high resolution and its access to the images, UAV aerial photographyin all walks of life increasingly wide range of applications. DOM seamless stitching ofimages monolithic as Figure in the low-altitude UAV image processing system, imageprocessing efficiency of the entire image processing system and a key step, but also theimage of final the DOM results of the key step. Inlaid line digital orthophoto Map（DOM）in the splicing process necessary step, inlaid line direct impact on the final result imagemapping effects.The face of the UAV its high degree of overlap at low altitude, large-scale,characteristic of the vast amounts of data, which greatly increases the traditionalorthophoto mosaic processing work load. The mosaic line automatic detection research andresolve undoubtedly can improve the DOM production efficiency and quality, and toDOM-automated production of great significance for the mapping industry.（1）Looking mosaic line, is the focus of this study, this article will propose an optimalpath method inlaid line algorithm-dijkstra algorithm whitch is an algorithm in graph theory,it has a path unique characteristics, and the path of the most excellent characteristics.Dijkstra method itself redundancy greater efficiency in image processing is low, this articleovercome dijksta method disadvantage of using the sparse matrix as the basis forconstructed, thereby making dijkstra efficiency of the method greatly improved. Achievequickly generate optimal mosaic line effect.（2）Buffer looking for the traditional buffer forming process research, combined withthe characteristics of the mosaic line buffer proposed adaptive buffer concept, the themosaic line buffer automatically generated based on the concept. （3）Rapid integration of the image of the buffer has been inlaid lines and buffer forimage fusion, combined with inlaid line buffer own characteristics, a suitable bufferpixel-level image fusion, fast buffer fusion method.Through three processes, to resolve the current monolithic DOM seamless splicingefficiency is low, and the results are not the status quo. Lay a theoretical foundation for theresearch and development of the domestic the UAV integration of image processingsystem.

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