A Description Method for MSER with SIFT Descriptor
Maximally Stable Extremal Regions are robust to complex affine distortion and illumination changes between reference image and real-time image. On the basis of deeply research on the SIFT descriptor, this paper propose a description algorithm for MSER using SIFT descriptor. The Second central moment is used in the algorithm to make ellipse adjustment for each irregular MSER. Then a self-adaptable rectangle area, whose side is proportional to the minor axis of the ellipse, is constructed encircling each ellipse centre. Finally, a SIFT feature vector is formed to express the MSER, after processing the statistic characteristic of all pixels’ gray gradient in the rectangle aero. A reasonable range of a self-adaptable rectangle area side is presented in the paper. Matching experiment results show that our algorithm is highly distinctive and stable.
X. H. Fan et al., "A Description Method for MSER with SIFT Descriptor", Applied Mechanics and Materials, Vol. 127, pp. 115-120, 2012