cvCvtColor(image,hsv,CV_BGR2HSV); BGR2HSV( bgr, hsv);

痛定思痛。 2022-07-15 13:50 186阅读 0赞

\#include <stdio.h>  
\#include "opencv2/core/core.hpp"  
\#include "opencv2/features2d/features2d.hpp"  
\#include "opencv2/highgui/highgui.hpp"  
\#include "opencv2/nonfree/nonfree.hpp"  
\#ifndef \_DEBUG  
\#pragma  comment(lib,"IlmImf.lib")    
\#pragma  comment(lib,"libjasper.lib")     
\#pragma  comment(lib,"libjpeg.lib")    
\#pragma  comment(lib,"libpng.lib")        
\#pragma  comment(lib,"libtiff.lib")   
\#pragma  comment(lib,"zlib.lib")    
\#pragma  comment(lib,"opencv\_calib3d2411.lib")  
\#pragma  comment(lib,"opencv\_contrib2411.lib")  
\#pragma  comment(lib,"opencv\_core2411.lib")  
\#pragma  comment(lib,"opencv\_features2d2411.lib")  
\#pragma  comment(lib,"opencv\_flann2411.lib")  
\#pragma  comment(lib,"opencv\_gpu2411.lib")  
\#pragma  comment(lib,"opencv\_highgui2411.lib")  
\#pragma  comment(lib,"opencv\_imgproc2411.lib")  
\#pragma  comment(lib,"opencv\_legacy2411.lib")  
\#pragma  comment(lib,"opencv\_ml2411.lib")  
\#pragma  comment(lib,"opencv\_nonfree2411.lib")  
\#pragma  comment(lib,"opencv\_objdetect2411.lib")  
\#pragma  comment(lib,"opencv\_ocl2411.lib")  
\#pragma  comment(lib,"opencv\_photo2411.lib")  
\#pragma  comment(lib,"opencv\_stitching2411.lib")  
\#pragma  comment(lib,"opencv\_superres2411.lib")  
\#pragma  comment(lib,"opencv\_ts2411.lib")  
\#pragma  comment(lib,"opencv\_video2411.lib")  
\#pragma  comment(lib,"opencv\_videostab2411.lib")  
\#else  
\#pragma  comment(lib,"zlibd.lib")  
\#pragma  comment(lib,"IlmImfd.lib")  
\#pragma  comment(lib,"libjasperd.lib")  
\#pragma  comment(lib,"libjpegd.lib")  
\#pragma  comment(lib,"libpngd.lib")  
\#pragma  comment(lib,"libtiffd.lib")  
\#pragma  comment(lib,"opencv\_calib3d2411d.lib")  
\#pragma  comment(lib,"opencv\_contrib2411d.lib")  
\#pragma  comment(lib,"opencv\_core2411d.lib")  
\#pragma  comment(lib,"opencv\_features2d2411d.lib")  
\#pragma  comment(lib,"opencv\_flann2411d.lib")  
\#pragma  comment(lib,"opencv\_gpu2411d.lib")  
\#pragma  comment(lib,"opencv\_highgui2411d.lib")  
\#pragma  comment(lib,"opencv\_imgproc2411d.lib")  
\#pragma  comment(lib,"opencv\_legacy2411d.lib")  
\#pragma  comment(lib,"opencv\_ml2411d.lib")  
\#pragma  comment(lib,"opencv\_nonfree2411d.lib")  
\#pragma  comment(lib,"opencv\_objdetect2411d.lib")  
\#pragma  comment(lib,"opencv\_ocl2411d.lib")  
\#pragma  comment(lib,"opencv\_photo2411d.lib")  
\#pragma  comment(lib,"opencv\_stitching2411d.lib")  
\#pragma  comment(lib,"opencv\_superres2411d.lib")  
\#pragma  comment(lib,"opencv\_ts2411d.lib")  
\#pragma  comment(lib,"opencv\_video2411d.lib")  
\#pragma  comment(lib,"opencv\_videostab2411d.lib")  
\#endif

using namespace cv;  
using namespace std;  
\#include <math.h>  
\#include "opencv\\highgui.h"  
\#include "opencv\\cv.h"  
\#include "time.h"  
\#include <iostream>

struct BGR  
\{  
 uchar b;  
 uchar g;  
 uchar r;  
\};

struct HSV  
\{  
 int h;  
 double s;  
 double v;  
\};

bool IsEquals(double val1 , double val2 )  
\{  
 return fabs( val1 - val2) < 0.00001;  
\}

//RGB(BGR: 0~255)转HSV(H: \[0~360), S: \[0~1\], V: \[0~1\])  
void BGR2HSV(BGR &bgr, HSV &hsv)  
\{  
 double b, g, r;  
 double h, s, v;  
 double min, max;  
 double delta;

b = bgr.b / 255.0;  
 g = bgr.g / 255.0;  
 r = bgr.r / 255.0;

if (r > g)  
 \{  
  max = MAX( r, b);  
  min = MIN( g, b);  
 \}  
 else  
 \{  
  max = MAX( g, b);  
  min = MIN( r, b);  
 \}

v = max;  
 delta = max - min;

if (IsEquals( max, 0))  
 \{  
  s = 0.0;  
 \}  
 else  
 \{  
  s = delta/ max;  
 \}

if (max == min)  
 \{  
  h = 0.0;  
 \}  
 else  
 \{  
  if ( IsEquals( r, max) && g >= b)  
  \{  
   h = 60 \* ( g - b)/ delta + 0;  
  \}  
  else if ( IsEquals( r, max) && g < b)  
  \{  
   h = 60 \* ( g - b)/ delta + 360;  
  \}  
  else if ( IsEquals( g, max))  
  \{  
   h = 60 \* ( b - r)/ delta + 120;  
  \}  
  else if ( IsEquals( b, max))  
  \{  
   h = 60 \* ( r - g)/ delta + 240;  
  \}  
 \}

hsv.h = ( int)( h + 0.5);  
 hsv.h = ( hsv. h > 359) ? ( hsv. h - 360) : hsv. h;  
 hsv.h = ( hsv. h < 0) ? ( hsv. h + 360) : hsv. h;

//hsv. h = hsv. h + 60;// h取值范围为\[0, 360)  
 //hsv. h = ( hsv. h > 359) ?  (hsv. h - 360): hsv. h;  
 //hsv. h = ( hsv. h < 0) ? ( hsv. h + 360) : hsv. h;

hsv.s = s;  
 hsv.v = v;  
\}

//RGB(BGR: 0~255)转HSV(H: \[0~360), S: \[0~1\], V: \[0~1\])  
void HSV2BGR(HSV &hsv, BGR &bgr)  
\{  
 int h = hsv.h;  
 double s = hsv. s;  
 double v = hsv. v;  
 double b = 0.0;  
 double g = 0.0;  
 double r = 0.0;

int flag = ( int) abs( h/60.0 );  
 double f = h/60.0 - flag;  
 double p = v \* (1 - s);  
 double q = v \* (1 - f\* s);  
 double t = v \* (1 - (1- f)\* s);

switch ( flag)  
 \{  
 case 0:  
  b = p;  
  g = t;  
  r = v;  
  break;  
 case 1:  
  b = p;  
  g = v;  
  r = q;  
  break;  
 case 2:  
  b = t;  
  g = v;  
  r = p;  
  break;  
 case 3:  
  b = v;  
  g = q;  
  r = p;  
  break;  
 case 4:  
  b = v;  
  g = p;  
  r = t;  
  break;  
 case 5:  
  b = q;  
  g = p;  
  r = v;  
  break;  
 default:  
  break;  
 \}

int blue = int( b \* 255);  
 bgr.b = ( blue > 255) ? 255 : blue;  
 bgr.b = ( blue < 0) ? 0 : bgr. b;

int green = int( g \* 255);  
 bgr.g = ( green > 255) ? 255 : green;  
 bgr.g = ( green < 0) ? 0 : bgr. g;

int red = int( r \* 255);  
 bgr.r = ( red > 255) ? 255 : red;  
 bgr.r = ( red < 0) ? 0 : bgr. r;  
\}

int main()  
\{  
 string imgName = "D:/opencv/images/lena.jpg";  
 Mat img = cv::imread(imgName);  
 Mat tmp = img.clone();

if (img.data == NULL)  
 \{  
  cout<< "Could not open or find the image"<<endl;  
  return -1;  
 \}

int row = img. rows;  
 int col = img. cols \* img.channels();  
 uchar \* pImg = NULL;  
 BGR bgr;  
 HSV hsv;

for ( int i = 0; i < row; i++)  
 \{  
  pImg = img. ptr< uchar>( i); // 遍历时用img.at()效率会降很多, 很耗时  
  for ( int j = 0; j < col; j+=3)  
  \{  
   bgr. b = pImg\[ j\];  
   bgr. g = pImg\[ j + 1\];  
   bgr. r = pImg\[ j + 2\];  
   BGR2HSV( bgr, hsv);  
   pImg\[j\]     = hsv.h/2;  
   pImg\[j + 1\] = hsv.s\*255;  
   pImg\[j + 2\] = hsv.v\*255;

//HSV2BGR( hsv, bgr);  
   //pImg\[j\]     = bgr. b;  
   //pImg\[j + 1\] = bgr. g;  
   //pImg\[j + 2\] = bgr. r;  
  \}  
 \}  
 imshow("hsv", img);

cvtColor(img, img, CV\_HSV2BGR);  
\#if 0  
 for ( int i = 0; i < row; i++)  
 \{  
  pImg = img. ptr< uchar>( i); // 遍历时用img.at()效率会降很多, 很耗时  
  for ( int j = 0; j < col; j+=3)  
  \{  
   //bgr. b = pImg\[ j\];  
   //bgr. g = pImg\[ j + 1\];  
   //bgr. r = pImg\[ j + 2\];  
   //BGR2HSV( bgr, hsv);

hsv.h = pImg\[j\]\*2    ;  
   hsv.s = pImg\[j + 1\]/255;  
   hsv.v = pImg\[j + 2\]/255;

HSV2BGR( hsv, bgr);  
   pImg\[j\]     = bgr. b;  
   pImg\[j + 1\] = bgr. g;  
   pImg\[j + 2\] = bgr. r;  
  \}  
 \}  
\#endif  
 imshow("dd", img);  
 cv::waitKey();

imshow("opencv", tmp);  
 cv::waitKey();  
 cvtColor(tmp, tmp, CV\_BGR2HSV);  
 imshow("opencv", tmp);  
 cv::waitKey();  
 vector< Mat> channels;  
 split( tmp, channels);  
 //channels\[0\] += 30;//H 这里没有做范围判断,opencv的h取值范围为\[0, 180)  
 //channels\[1\] += 100;//S  
 channels\[2\] += 100;//V  
 merge(channels, tmp);  
 cvtColor(tmp, tmp, CV\_HSV2BGR);  
 imshow("opencv", tmp);  
 cv::waitKey();

return 0;  
\}

int mainBak()  
\{  
 IplImage\* image = cvLoadImage("D:/opencv/images/lena.jpg");   
 IplImage\* hsv = cvCreateImage( cvGetSize(image), 8, 3 );  
 cvCvtColor(image,hsv,CV\_BGR2HSV);

cvNamedWindow("saturate\_SV",CV\_WINDOW\_AUTOSIZE);   
 cvShowImage("saturate\_SV",hsv);   
 cvWaitKey(0);   
 cvReleaseImage(&hsv);   
 cvDestroyWindow("saturate\_SV");   
 return 0;  
\}