def find_sift(im_source, im_search, min_match_count=<NUM_LIT:4>):
res = find_all_sift(im_source, im_search, min_match_count, maxcnt=<NUM_LIT:1>)<EOL>if not res:<EOL><INDENT>return None<EOL><DEDENT>return res[<NUM_LIT:0>]<EOL>
SIFT特征点匹配