Algorithm 2: Rematch Algorithm

Input: all candidate sorted images { $I_1,I_2,\dots ,I_{20}$ }

1: Detect SURF features of candidate image $I_{\theta }$ and query image $I_{query}$;  2: Detect image matching points using FLANN algorithm;

3: Calculate the number of matching points, the most is $I_{best}$;

Output: the best matching image $I_{best}$