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Study of Key Technologies for Scene Matching Aided Navigation System

Author: SongRenTing
Tutor: YangWeiPing
School: National University of Defense Science and Technology
Course: Information and Communication Engineering
Keywords: Integrated Navigation Scene Matching Edge Detection Wavelet decomposition Least Squares Matching Matching area
CLC: TP391.41
Type: Master's thesis
Year: 2007
Downloads: 234
Quote: 2
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Abstract


In this paper, long -endurance unmanned aerial vehicle navigation application background around the scene matching algorithm and scene matching area selection method used in the scene matching aided navigation are two key technologies to conduct research . Looking for high accuracy and speed to meet the long - range navigation matching algorithm has been the core of the scene matching . On the basis of the analysis of other algorithms to the edge as the common features of the wavelet multiresolution decomposition MAD guidelines and the least squares matching algorithm is a combination of high-precision multi- source image matching algorithm . MAD similarity criteria simple and easily implemented in hardware to improve it just to evaluate the whole area , while ignoring the lack of spatial distribution of the gray region ; based on wavelet multi-resolution image pyramid decomposition reduced match space and improve computing speed ; the underlying matching using the the MAD criteria for algorithm improved and effective to ensure the accuracy of the underlying match candidate point set ; the underlying match the high accuracy of least squares matching algorithm to obtain a high matching precision . Simulation results show that the algorithm to ensure a higher probability of match and match the speed , and able to meet the requirements of the integrated navigation system . The best scene matching area selection methods and reference storage problem . Through the analysis of the selection criteria of the matching area characteristics ( the amount of information of the scene , stability and repeat mode ) to the original reference map -based adaptive matching algorithm for multi-level screening program guidance . And reference map storage .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Image recognition device
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