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The effects of anisotropic Gaussian diffusion in scale invariant feature detection

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2 Author(s)
Skoch, W. ; Comput. Sci. & Comput. Eng. Dept., Univ. of Arkansas, Fayetteville, AR, USA ; Gauch, J.

Many feature detection algorithms use Gaussian scale space in order to locate scale-invariant and rotationally invariant keypoints in an image, including the Scale-Invariant Feature Transform (SIFT) algorithm. During the creation of this scale space, edge information and fine details in an image are often degraded or lost as a result of the Gaussian smoothing operation. In this paper, we study the effects of using edge preserving anisotropic diffusion during the creation of a scale space for use in the SIFT algorithm. We find that preserving edge information and fine details during the creation of a scale space allows SIFT to gather a much larger set of keypoints from images, and these keypoints tend to be far more robust towards scaling and rotation.

Published in:

Signal and Image Processing Applications (ICSIPA), 2011 IEEE International Conference on

Date of Conference:

16-18 Nov. 2011