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MATLAB完成圖像匹配的代碼： 都是通過歸一化的傅里葉描述子，來完成圖像匹配，旋轉不變性，有一定的尺度，
代碼片段和文件信息
/*
?????輪廓數據提取示例程序
???
?Written?by?Mao?Y.Bin
?School?of?Automation?NJUST
?2010.12.13
?*/
#?include?“viLib.h“?//?包含頭文件
#?pragma?comment（?lib?“viLib.lib“?）?//?包含viLib.lib庫
//////////////////////////////////////////////////////////////////////
#?include?
#?include?
#include
#include?
#include?
#include
using?namespace?std;
const?double?pi?=?acos（-1.0）;
//////////////////////////////////////////////////////////////////////
/*?
????輪廓數據讀取函數
輪廓數據以文本文件保存。
文件格式：
第1行：總數據點數
第2-n行：第一個點坐標，先x后y，中間以空格隔開
注意：輪廓數據文件中保存的輪廓點數，起始點和終止點是重合的，也就是起始
點保存了兩次，起始一次，結束一次。
?*/
/*?
????獲得輪廓數據文件中輪廓的總點數
輸入參數：
??char?*?filename:???文件名
輸出參數：
????????????無
返回值：
??輪廓總點數，若返回值?<=?0則表示讀取錯誤
?*/
int?GetContourInfo（?char?*?filename?）
{
FILE?*?fp;
int?N;
fp?=?fopen（?filename?“rt“?）;
if?（?fp?==?NULL?）?return（?0?）;
fscanf（?fp?“%d“?&N?）;
fclose（?fp?）;
return（?N?）;
}
/*?
????讀入數據，返回值為讀入的總輪廓點數
輸入參數：
char?*?filename:???文件名
int?*?Contours:????輪廓點（大小為2N，N為輪廓點數）
???????????????????其中，偶數位置存x坐標，奇數位置存y坐標
輸出參數：
?????????????無
返回值：
輪廓總點數，若返回值?<=?0則表示讀取錯誤
?*/
int?ReadContourData（?char?*?filename?int?*?Contours?）
{
FILE?*?fp;
int?N?k?x?y;
fp?=?fopen（?filename?“rt“?）;
if?（?fp?==?NULL?）?return（?0?）;
fscanf（?fp?“%d“?&N?）;
for?（?k?=?0;?k? {
fscanf（?fp?“%d?%d“?&x?&y?）;
Contours[k*2]?=?x;
Contours[k*2+1]?=?y;
}
fclose（?fp?）;
return（?N?）;
}
void?DFT（int?Nint?*dataR?int?*dataIdouble?*ansRdouble?*ansIdouble?DFT=0）
{
int?k?n;
for（k=0; k<=N-1; k++）
{
if（DFT==1）?dataI[k]?=?-dataI[k];
ansR[k]?=?ansI[k]?=?0;
for（n=0; n<=N-1; n++）
{
double?tempRtempI;
double?cos_tap=cos（2*pi*k*n/N）;
double?sin_tap=sin（2*pi*k*n/N）;
if（DFT==1）
{
tempR?=?（dataR[n]*cos_tap+dataI[n]*sin_tap）/N;
ansR[k]?+=?tempR;
tempI?=?（dataR[n]*sin_tap-dataI[n]*cos_tap）/N;
ansI[k]?+=?tempI;
}
else
{
tempR?=?dataR[n]*cos_tap+dataI[n]*sin_tap;
ansR[k]?+=?tempR;
tempI?=?-（dataR[n]*sin_tap-dataI[n]*cos_tap）;
ansI[k]?+=?tempI;
}
}//end?for2
}//end?for1
}//end?DFT
void?fourierdes（char*?filenamedouble*?dkint?NN）//歸一化傅里葉變換
{
????int?*?Contour2;
NN?=?GetContourInfo（?filename?）;?//?獲得輪廓點數
int*?xx?=?new?int?[NN];
int*?yy?=?new?int?[NN];
double*?out1?=?new?double?[NN];
double*?out2?=?new?double?[NN];
if?（?NN?>?0?）
{
Contour2?=?new?int?[NN*2];
ReadContourData（?filename?Contour2?）;?//?讀入輪廓點數據
for（int?i=0;i
xx[i]=Contour2[i*2];
yy[i]=Contour2[i*2+1];
}
//dft并計算dk
DFT（NNxx?yyout1out20）;
//歸一化傅里葉系數
double?f1=sqrt（（out1[1]*out1[1]）+（out2[1]*out2[1]））;
for（int?i=1;i
dk[i-1]=sqrt（double（out1[i]*out1[i]）+double（out2[i]*out2[i]））;
dk[i-1]=（double）dk[i-1]/（double）f1;
}
delete?[]?Contour2;
delete?[]?x?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
????.CA....????448826??2011-01-04?20:37??110101338郭思郁作業1\110101338郭思郁作業1.pdf
????.CA....??????7714??2011-01-04?20:19??110101338郭思郁作業1\homework1\ContourRead.cpp
????.CA....??????3470??2010-12-14?21:40??110101338郭思郁作業1\homework1\ContourRead.dsp
????.CA....???????547??2010-12-14?21:44??110101338郭思郁作業1\homework1\ContourRead.dsw
????.CA....??14748672??2011-01-04?20:20??110101338郭思郁作業1\homework1\ContourRead.ncb
????.CA....?????48640??2010-12-14?21:44??110101338郭思郁作業1\homework1\ContourRead.opt
????.CA....??????1249??2010-12-14?21:44??110101338郭思郁作業1\homework1\ContourRead.plg
????.CA....???????887??2011-01-02?10:13??110101338郭思郁作業1\homework1\ContourRead.sln
????.CA..H.?????19968??2011-01-04?20:20??110101338郭思郁作業1\homework1\ContourRead.suo
????.CA....??????4901??2010-12-30?22:56??110101338郭思郁作業1\homework1\ContourRead.vcproj
????.CA....??????1490??2011-01-04?20:20??110101338郭思郁作業1\homework1\ContourRead.vcproj.YUYU.Administrator.user
????.CA....??????9374??2010-12-31?15:15??110101338郭思郁作業1\homework1\Debug\bat0.txt
????.CA....?????13114??2011-01-04?20:19??110101338郭思郁作業1\homework1\Debug\BuildLog.htm
????.CA....????561664??2011-01-04?20:19??110101338郭思郁作業1\homework1\Debug\ContourRead.exe
????.CA....???????406??2011-01-02?11:27??110101338郭思郁作業1\homework1\Debug\ContourRead.exe.em
????.CA....???????472??2011-01-02?11:27??110101338郭思郁作業1\homework1\Debug\ContourRead.exe.em
????.CA....???????381??2011-01-04?20:19??110101338郭思郁作業1\homework1\Debug\ContourRead.exe.intermediate.manifest
????.CA....???1194372??2011-01-04?20:19??110101338郭思郁作業1\homework1\Debug\ContourRead.ilk
????.CA....?????67671??2011-01-04?20:19??110101338郭思郁作業1\homework1\Debug\ContourRead.obj
????.CA....???3468288??2011-01-04?20:19??110101338郭思郁作業1\homework1\Debug\ContourRead.pdb
????.CA....??????8045??2010-12-14?18:51??110101338郭思郁作業1\homework1\Debug\flatfish0.txt
????.CA....???2420736??2009-12-22?15:55??110101338郭思郁作業1\homework1\Debug\FreeImage.dll
????.CA....??????5513??2010-12-14?18:51??110101338郭思郁作業1\homework1\Debug\hammer0.txt
????.CA....??????6539??2010-12-14?18:51??110101338郭思郁作業1\homework1\Debug\key0.txt
????.CA....????????69??2011-01-04?20:19??110101338郭思郁作業1\homework1\Debug\mt.dep
????.CA....????486400??2011-01-04?20:19??110101338郭思郁作業1\homework1\Debug\vc90.idb
????.CA....????233472??2011-01-04?20:19??110101338郭思郁作業1\homework1\Debug\vc90.pdb
????.CA....????102400??2010-09-02?11:10??110101338郭思郁作業1\homework1\Debug\viLib.dll
????.CA....?????27213??2010-07-06?17:55??110101338郭思郁作業1\homework1\viLib.h
????.CA....?????12098??2010-09-02?11:10??110101338郭思郁作業1\homework1\viLib.lib
............此處省略6個文件信息
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