TITLE

Research on speeded-up robust features with RANSAC

AUTHOR(S)
KONG Jun; JIANG Min; Alimujiang Yiming
PUB. DATE
April 2013
SOURCE
International Journal of Advancements in Computing Technology;Apr2013, Vol. 5 Issue 8, p777
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
SURF (Speeded-Up Robust Features) algorithm well solves the problems of calculation time and operation speed in image registration. But it has such shortcomings as accuracy and reliability. Especially, with the increase of matching threshold, the error-matched will turn more serious. In order to solve it, this paper proposes a novel registration algorithm R-SURF. Firstly, use integral images, Hessian matrix, scale-space construction, and descriptor vector to generate and detect feature points efficiently. Secondly, feature point matching based on the City-block distance is introduced into image registration so to further improve algorithm reliability. Finally, RANSAC (Random Sample Consensus) method is applied to remove the outlier set and eliminate the extra error-matched feature points to further improve algorithm accuracy. Experimental results prove that the R-SURF algorithm doesn't only retain existed advantages such as low computational cost, high real-time performance, but also improves matching accuracy and reliability.
ACCESSION #
98940833

 

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