Mr. Ruiming Jia Profile

Ruiming Jia

at BeiHang Univ

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Proceedings Article | 30 October 2009 Paper

Scale-invariant global sparse image matching method based on Delaunay triangle

Hong Zhang, Lei Wang, Ruiming Jia

Proceedings Volume 7495, 74953S (2009) https://doi.org/10.1117/12.832804

KEYWORDS: Distortion, Image processing, Corner detection, Image registration, Image resolution, Algorithms, Image analysis, Ultraviolet radiation, Detection and tracking algorithms, Data processing

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This paper presents an approach of global sparse matching algorithm based on Delaunay Triangle theory to obtain reliable matching result of detected feature points between images. Our approach can solve the matching problem in the case of images captured under a certain range of scaling, rotation and translation, together with image affine distortion, addition of noise, and change in illumination. Considering that it is hard to obtain a high percentage of correct matched point pairs, we present this kind of Delaunay Triangle based matching method to improve the accuracy and exactness of matching result. First, corner detection algorithms are proposed to obtain accurate location of feature points. Then the relation of the feature points is constructed according to the Delaunay Triangle Theory in the form of a triangle net. Therefore, the feature points matching problem is transformed into a node angle and length vector matching problem in the triangle net. During the matching procession, the gray information of the image has not been used. The experimental results show that the method could achieve accurate matching results with a better percentage of correction.

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