Registration and integration algorithm in structured light three-dimensional scanning based on scale-invariant feature matching of multi-source images |
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Authors: | Haihua Cui Wenhe Liao Ning Dai and Xiaosheng Cheng |
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Affiliation: | Jiangsu Key Laboratory of Digital Medical Equipment Technology, Nanjing University of Aeronautic and Astronautic, Nanjing 210016, China |
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Abstract: | Based on the homography between a multi-source image and three-dimensional (3D) measurement points, this letter proposes a novel 3D registration and integration method based on scale-invariant feature matching. The matching relationships of two-dimensional (2D) texture gray images and two-and-a-half- dimensional (2.5D) range images are constructed using the scale-invariant feature transform algorithms. Then, at least three non-collinear 3D measurement points corresponding to image feature points are used to achieve a registration relationship accurately. According to the index of overlapping images and the local 3D border search method, multi-view registration data are rapidly and accurately integrated. Exper- imental results on real models demonstrate that the algorithm is robust and effective. |
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