//?May14th2011?Median?filter????
//?zhangxuezhen?
//?all?right?reserved
#include?
#include?
#include?
#include?
#include?
#include?

#define?IE（imgxy）???（（uchar*）（img->imageData?+?img->widthStep*y））[x]

void?hist_equal（?IplImage*?src??IplImage*?dst?）
{
	int?nj[256];??//?the?amount?of?the?gray?scale?
	double?pj[256];??//?the?probability?of?the?gray?scale
	int?gi[256];
	double?cf=0;
	int?ij;
	int?height?;
	int?width?;
	height?=?src->height;
	width?=?src->width;

	for（?i=0;?i<256?;?i++）
	{
		nj[i]?=?0;
	}

	for（?j?=?0;?j	{
		for（?i=0;?i		{
			nj[IE（srcij）]?=?nj[IE（srcij）]?+?1;
		}
	}

	for（?i=0;?i<256;?i++）
	{
		pj[i]?=?（（double）nj[i]）/（?width*height?）;?//?這里容易出錯(cuò)
	}???

	for（?i=0;?i<256;?i++）
	{
		cf?=?cf?+?pj[i]?;
		gi[i]?=?（int）（255*cf）?;
	}


	for（?j?=?0;?j	{
		for（?i=0;?i		{
			IE（dstij）?=?（unsigned?char）gi[IE（srcij）]?;
		}
	}
}


int?main（?int?argc?char?*argv[]?）
{
	IplImage?*src;
	IplImage?*dst;

	src?=?cvLoadImage（“C:\\Program?Files\\MATLAB71\\圖像處理\\test_small\\lena_salt.bmp“?0?）;
	dst?=?cvCreateImage（cvGetSize（src）?src->depth??src->nChannels?）;

	hist_equal（?src?dst?）;

	cvNamedWindow（“src“?0?）;	
	cvNamedWindow（“dst“?0?）;
	cvShowImage（“src“?src?）;
	cvShowImage（“dst“?dst?）;
	
	cvWaitKey（?-1）;
	cvDestroyWindow（“src“）;
	cvDestroyWindow（“dst“）;
	cvReleaseImage（?&src?）;
	cvReleaseImage（?&dst?）;

}




	

	

	

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件???????1563??2011-06-06?10:05??Hist_equal.c

?????文件???????4442??2011-06-06?10:05??HIST_EQUAL_MY.dsp

?????文件????????551??2011-05-14?15:57??HIST_EQUAL_MY.dsw

?????文件??????41984??2011-06-06?10:05??HIST_EQUAL_MY.ncb

?????文件??????49664??2011-06-06?10:05??HIST_EQUAL_MY.opt

?????文件????????970??2011-06-06?10:05??HIST_EQUAL_MY.plg

?????文件??????41984??2011-06-06?10:05??Debug\vc60.idb

?????文件??????77824??2011-06-06?10:05??Debug\vc60.pdb

?????文件??????15337??2011-06-06?10:05??Debug\Hist_equal.obj

?????文件?????188522??2011-06-06?10:05??Debug\HIST_EQUAL_MY.exe

?????文件?????427008??2011-06-06?10:05??Debug\HIST_EQUAL_MY.pdb

?????文件????3105972??2011-06-06?10:05??Debug\HIST_EQUAL_MY.pch

?????文件?????195144??2011-06-06?10:05??Debug\HIST_EQUAL_MY.ilk

?????目錄??????????0??2011-05-14?15:57??Debug

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

??????????????4150965????????????????????14