the affine transformation is difficult to avoid. In exiting algorithms
Scale Invarian Feature Transform(SIFT) has strong resistance to changes of scale
rotation
translation and illumination changes generated by affine transformation.However
when an image has a view angle change
especially large change
the SIFT is not satisfactory. This paper researches the principle of the SIFT and improves its matching function.The latitude and longitude of camera axis are simulated firstly
and then the images are matched by using the improved SIFT algorithm. Experiments show that the algorithm not only retains the original advantages of the SIFT algorithm
but also been robust to changes of the angle.It has achieved a complete anti-affine transformation. In conclusions
the proposed algorithm is more suitable to affine transformation
especially large angle changes
as compared with SIFT algorithm.
关键词
Keywords
references
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