求教关于使用sift算法问题

[zj_zwl]

在网上找了个c#版的sift算法,它可以算出指定图像的特征码,内容类似这样:(只发前面小部分)
15 128
34.1306353010042 16.4888510338318 1.04611425138167 0.453056548373659
5 0 2 1 2 1 4 3 6 3 5 3 1 3 2 2 11 0 0 7
13 11 6 4 7 0 0 0 23 16 0 1 45 0 0 0 0 0 3 25
33 1 2 1 2 6 2 21 50 19 0 0 1 10 5 2 77 28 0 0
0 1 0 0 77 0 0 0 0 0 0 57 77 7 0 0 0 0 0 28
77 72 0 0 0 0 0 0 77 55 0 0 0 0 0 0 44 0 0 0
0 0 0 16 77 2 0 0 0 0 0 3 59 19 0 0 0 0 0 0
23 10 0 0 0 0 0 0
19.1616803322094 10.4403555364676 1.2697334188124 1.57616174827604
30 8 0 0 11 1 1 1 57 12 0 0 9 2 0 6 26 0 0 0
3 2 0 29 2 6 9 0 0 0 0 7 71 47 0 0 0 0 0 0
71 35 0 0 0 0 1 32 45 0 0 0 0 0 27 71 3 22 18 0
0 0 10 37 59 26 0 0 0 0 0 0 45 7 0 0 0 0 18 26
9 0 0 0 0 0 71 71 31 44 14 0 0 0 22 41 2 1 0 0
0 0 0 0 0 0 0 0 0 0 8 10 24 0 0 0 0 0 17 58
71 24 0 0 0 0 1 19
15.3096724625537 12.0462892880045 1.24553875982927 0.545164202109084
1 0 5 43 1 0 0 0 0 0 20 68 0 0 0 0 0 0 18 68
0 0 0 0 0 0 3 15 0 0 0 0 42 22 2 4 0 0 0 0
42 11 29 49 0 0 0 5 3 18 68 68 0 0 0 0 0 4 40 20
0 0 0 0 68 68 9 0 0 0 0 5 68 20 3 0 0 0 0 40
38 68 45 2 0 0 0 2 0 26 27 0 0 0 0 0 10 44 31 0
0 0 0 1 46 6 0 0 0 0 0 15 26 29 0 0 0 0 0 1
0 8 1 0 0 5 0 0
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现在我不知道怎样根据两幅的特征码来获取它们的相似度,本人学习编程时间不长,请尽量讲的详细些,谢谢!

[飘摇的海啸]

同求！