#include <cv.h>
#include <highgui.h>
#pragma comment(lib,"cv.lib")
#pragma comment(lib,"cxcore.lib")
#pragma comment(lib,"cvaux.lib")
#pragma comment(lib,"highgui.lib")
int main (int argc, char **argv){
int i, j;
int hist_size = 256, ch_width = 257;
float range_0[] = { 0, 256 };
float *ranges[] = { range_0 };
IplImage *src_img = 0, *dst_img[3], *hist_img, *view;
CvHistogram *hist;
CvCapture *capture = 0;
int keyin;
capture = cvCreateCameraCapture(0);
src_img = cvQueryFrame (capture);
for (i = 0; i < 3; i++) {
dst_img[i] = cvCreateImage (cvSize (src_img->width, src_img->height), src_img->depth, 1);
}
view = cvCreateImage( cvSize(src_img->width/2,src_img->height/2),IPL_DEPTH_8U, 1);
// ヒストグラム構造体，ヒストグラム画像領域を確保
hist = cvCreateHist (1, &hist_size, CV_HIST_ARRAY, ranges, 1);
hist_img = cvCreateImage (cvSize (ch_width * 3, 200), 8, 3);
cvNamedWindow("Image", CV_WINDOW_AUTOSIZE);
cvNamedWindow("R", CV_WINDOW_AUTOSIZE);
cvNamedWindow("G", CV_WINDOW_AUTOSIZE);
cvNamedWindow("B", CV_WINDOW_AUTOSIZE);
cvNamedWindow("Histogram", CV_WINDOW_AUTOSIZE);
int flag = 1;
int stopflag=0;
while(flag == 1){
if (stopflag == 0)
src_img = cvQueryFrame (capture);
// src_img=cvLoadImage("test.bmp",1);
// カラー入力画像をBGRに分解
cvSplit (src_img, dst_img[0], dst_img[1], dst_img[2], NULL);
// ヒストグラム画像の初期化
cvSet (hist_img, cvScalarAll(255), 0);
cvLine(hist_img, cvPoint(256,0), cvPoint(256,255),CV_RGB(0,0,0),1,8,0);
cvLine(hist_img, cvPoint(256+258,0), cvPoint(256+258,255),CV_RGB(0,0,0),1,8,0);
for (i = 0; i < 3; i++) {
// ヒストグラムの計算
// /10としているのは表示するグラフの縦軸方向の大きさを見やすくするため
// 実際の画像に合わせて変更するとよい
cvCalcHist (&dst_img[i], hist, 0, NULL);
cvScale (hist->bins, hist->bins, ((double) hist_img->height) /((src_img->width)*(src_img->height)/10), 0);
// ヒストグラムの描画
switch(i){
case 0: for (j = 0; j < hist_size; j++)
cvLine(hist_img, cvPoint(j +(i*ch_width), hist_img->height),
cvPoint(j +(i*ch_width), hist_img->height - cvRound (cvGetReal1D (hist->bins, j))), CV_RGB(0,0,255), 1, 8, 0);
break;
case 1: for (j = 0; j < hist_size; j++)
cvLine(hist_img, cvPoint(j +(i*ch_width), hist_img->height),
cvPoint(j +(i*ch_width), hist_img->height - cvRound (cvGetReal1D (hist->bins, j))), CV_RGB(0,255,0), 1, 8, 0);
break;
case 2: for (j = 0; j < hist_size; j++)
cvLine(hist_img, cvPoint(j +(i*ch_width), hist_img->height),
cvPoint(j +(i*ch_width), hist_img->height - cvRound (cvGetReal1D (hist->bins, j))), CV_RGB(255,0,0), 1, 8, 0);
break;
}
}
// ヒストグラム画像を表示，キーが押されたときに終了や保存
cvShowImage("Image", src_img);
cvResize(dst_img[0],view,CV_INTER_CUBIC);
cvShowImage("B", view);
cvResize(dst_img[1],view,CV_INTER_CUBIC);
cvShowImage("G", view);
cvResize(dst_img[2],view,CV_INTER_CUBIC);
cvShowImage ("R", view);
cvShowImage("Histogram", hist_img);
keyin=cvWaitKey(1);
if (keyin=='q'){
flag = 0;
};
if (keyin == 's'){
if (stopflag == 0) stopflag = 1;
else stopflag = 0;
}
}
cvDestroyAllWindows();
cvReleaseImage(&src_img);
cvReleaseImage(&hist_img);
cvReleaseImage(&view);
for (i = 0; i < 3; i++){
cvReleaseImage(&dst_img[i]);
}
cvReleaseHist(&hist);
return 0;
}