rgb和hsv的相互转换

// removehaze.cpp : 定义控制台应用程序的入口点。

//

#include "stdafx.h"

#include "cv.h"

#include "cxcore.h"

#include "highgui.h"

#include "cvaux.h"

//hsv: h:色彩s:纯度v:明度

int main( )

{

IplImage* src = NULL;//定义图像类型的指针

IplImage* floatsrc = NULL;

IplImage* floathsv = NULL;

IplImage* floatimgH = NULL;

IplImage* floatimgS = NULL;

IplImage* floatimgV = NULL;

cvNamedWindow( "src", 1 );

cvNamedWindow( "H通道", 1 );

cvNamedWindow( "S通道", 1 );

cvNamedWindow( "V通道", 1 );

src = cvLoadImage( " 6.jpg", -1);

cvShowImage( "src", src );

CvSize size = cvGetSize( src );

//cvCreateImage属性：

//IplImage* cvCreateImage( CvSize size, int depth, int channels )

//参数说明：size 图像宽、高.depth 图像元素的位深度.channels分配一个单通道字节图像

//先将图像转换成float型的

floatsrc = cvCreateImage( size, IPL_DEPTH_32F, 3 );

floathsv = cvCreateImage( size, IPL_DEPTH_32F, 3 );

floatimgH = cvCreateImage( size, IPL_DEPTH_32F, 1 );

floatimgS = cvCreateImage( size, IPL_DEPTH_32F, 1 );

floatimgV = cvCreateImage( size, IPL_DEPTH_32F, 1 );

//将src从8位转换到32位的float型

cvConvertScale( src, floatsrc, 1.0/255.0, 0 );//归一化之后方能够显示

//cvConvertScale( src, floatsrc, 1, 0 );

//cvShowImage("floatsrc",floatsrc);

//cvWaitKey(-1);

//cvCvtColor属性：

//CV_BGR2HSV将图片从RGB空间转换为HSV空间

//将float型图像从BGR转换到HSV 如果需要转换到其他的颜色空间那么改变CV_BGR2HSV即可

//cvCvtColor要求两个参数的类型必须完全相同，所以要转为float型

cvCvtColor( floatsrc, floathsv, CV_BGR2HSV );

//将三通道图像分解成3个单通道图像，H对应的通道时0，S、V对应的通道时1和2 //cvCvtPixToPlane(picHSV, h_plane, s_plane, v_plane, 0);

cvSplit( floathsv, floatimgH, floatimgS, floatimgV, NULL);

cvShowImage( "src", src );

cvShowImage( "H通道", floatimgH );

cvShowImage( "S通道", floatimgS );

cvShowImage( "V通道", floatimgV );

//CV_BGR2HSV

cvWaitKey( 0 );

cvReleaseImage( &src );

cvReleaseImage( &floathsv );

cvReleaseImage( &floatimgH );

cvReleaseImage( &floatimgS );

cvReleaseImage( &floatimgV );

return 0;

}