//?005.cpp?:?Defines?the?entry?point?for?the?console?application.
//

#include?“stdafx.h“
#include?“cv.h“
#include?“cxcore.h“
#include?“highgui.h“
//#include?“math.h“?

int?BasicGlobalThreshold（int?*pgint?startint?end）
??{???????????????????????????????????????????//??基本全局閾值法
??????int??itt1t2k1k2;
??????double?uu1u2;????
??????t=0;?????
??????u=0;
??????for?（i=start;i?????{
?????????t+=pg[i];????????
?????????u+=i*pg[i];
?????}
?????k2=（int）?（u/t）;??????????????????????????//??計算此范圍灰度的平均值????
?????do?
?????{
?????????k1=k2;
?????????t1=0;????
?????????u1=0;
?????????for?（i=start;i<=k1;i++）?
?????????{?????????????//??計算低灰度組的累加和
?????????????t1+=pg[i];????
?????????????u1+=i*pg[i];
?????????}
?????????t2=t-t1;
?????????u2=u-u1;
?????????if?（t1）?
?????????????u1=u1/t1;?????????????????????//??計算低灰度組的平均值
?????????else?
?????????????u1=0;
?????????if?（t2）?
?????????????u2=u2/t2;?????????????????????//??計算高灰度組的平均值
?????????else?
?????????????u2=0;
?????????k2=（int）?（（u1+u2）/2）;?????????????????//??得到新的閾值估計值
?????}
?????while（k1!=k2）;???????????????????????????//??數據未穩定，繼續
?????//cout<<“The?Threshold?of?this?Image?in?BasicGlobalThreshold?is:“<?????return（k1）;??????????????????????????????//??返回閾值
?}


int?main（int?argc?char*?argv[]）?
{
	IplImage?*imgGray=NULL;//?聲明IplImage?變量，用于圖像格式轉換
	IplImage?*img=cvLoadImage（“車道線識別.jpg“）;
	imgGray=cvCreateImage（cvGetSize（img）IPL_DEPTH_8U1）;
	cvCvtColor（imgimgGrayCV_BGR2GRAY）;

	IplImage*?imgBasicGlobalThreshold=cvCreateImage（cvGetSize（img）IPL_DEPTH_8U1）;
????
????cvCopyImage（imgGrayimgBasicGlobalThreshold）;
????
	int?pg[256]ith;

????for?（i=0;i<256;i++）
????pg[i]=0;

????for?（i=0;iimageSize;i++）//?直方圖統計

????pg[（BYTE）imgBasicGlobalThreshold->imageData[i]]++;

????th?=?BasicGlobalThreshold（pg0256）;//?確定閾值

????printf（“閾值為%d\n“th）;//輸出顯示閥值

????cvThreshold（imgBasicGlobalThresholdimgBasicGlobalThresholdth255CV_THRESH_BINARY）;//?二值化

????cvNamedWindow（“BasicGlobalThreshold“1）;
????cvShowImage（“BasicGlobalThreshold“imgBasicGlobalThreshold）;//顯示圖像
	cvWaitKey（0）;

????return?0;?
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????769??2012-09-04?13:01??005\StdAfx.h

?????文件????????290??2012-09-04?13:01??005\StdAfx.cpp

?????文件???????1190??2012-09-04?13:01??005\ReadMe.txt

?????文件????????514??2012-09-04?13:01??005\005.dsw

?????文件??????41984??2012-09-06?17:23??005\005.ncb

?????文件?????140288??2012-09-04?21:22??005\Debug\vc60.idb

?????文件?????400556??2012-09-04?20:42??005\Debug\005.pch

?????文件?????208896??2012-09-04?21:21??005\Debug\vc60.pdb

?????文件?????188463??2012-09-04?21:22??005\Debug\005.exe

?????文件?????566272??2012-09-04?21:21??005\Debug\005.pdb

?????文件?????206608??2012-09-04?21:22??005\Debug\005.ilk

?????文件???????3998??2012-09-04?20:42??005\Debug\StdAfx.sbr

?????文件???????2061??2012-09-04?20:42??005\Debug\StdAfx.obj

?????文件??????????0??2012-09-04?21:21??005\Debug\005.sbr

?????文件????2024448??2012-09-04?21:21??005\Debug\005.bsc

?????文件??????25910??2012-09-04?21:22??005\Debug\005.obj

?????文件????????812??2012-09-04?21:22??005\005.plg

?????文件???????4386??2012-09-04?13:04??005\005.dsp

?????文件??????32715??2012-09-03?10:42??005\車道線識別.jpg

?????文件???????2310??2012-09-04?20:55??005\005.cpp

?????文件??????48640??2012-09-06?17:23??005\005.opt

?????目錄??????????0??2012-09-04?13:01??005\Debug

?????目錄??????????0??2012-09-04?13:01??005

-----------?---------??----------?-----??----

??????????????3901110????????????????????23