A Fast Image Matching Algorithm Based on Characteristic Points
Quan Wen · Electronics Optics & Control · 2009
In order to accomplish fast and precise image matching,the image matching technique based on image grey-scale value and the technique based on characteristic points are combined together.An image grey-scale value characteristic is defined,and a fast matching algorithm based on image grey-scale value characteristic point is proposed.The algorithm uses the obtained grey value characteristic point as the searching foundation,which is different from the traditional ergodic search strategy.Because the selection of the characteristic point has certain immunity to the noise and the linear change of the grey value,this algorithm is also applicable to the asymmetrical image matching problem.The algorithm can improve the matching speed greatly while keeping the matching precision,and accomplishe image matching with high efficiency and high precision.Experiments verified the rapidness and precision of the algorithm.