[opencv c++ 영상 다루기 공부] *세번째* 영상 흑백 변환

First. 사진 흑백 변환

#code

#include <opencv.hpp>
 
int main(void)
{
    char key;
    IplImage    *ornImage;
    IplImage    *grayImage;
    ornImage = cvLoadImage("test.jpg", -1);
    cvNamedWindow("ornImage", 0);
    cvNamedWindow("grayImage", 0);
    grayImage = cvCreateImage(cvGetSize(ornImage), IPL_DEPTH_8U, 1);
    cvCvtColor(ornImage, grayImage, CV_BGR2GRAY);
    cvShowImage("ornImage", ornImage);
    cvShowImage("grayImage", grayImage);
 
    key = cvWaitKey(0);
 
    cvReleaseImage(&ornImage);
    cvReleaseImage(&grayImage);
    
    return 0;
}

#공부

#결과

Second, 실시간 동영상 흑백 변환

#code

#include <opencv.hpp>
 
int main(void)
{
    char key;
    IplImage    *ornImage;
    IplImage    *grayImage;
    CvCapture    *camera;
    CvSize ornSize, cropSize;
 
    ornSize.height = 480;
    ornSize.width = 640;
    cropSize.height = 480;
    cropSize.width = 640;
 
    camera = cvCreateCameraCapture(0);
    grayImage = cvCreateImage(ornSize, IPL_DEPTH_8U, 1);
 
    while (1)
    {
        if (!cvGrabFrame(camera))
        {
            printf("camera error\n");
            return 0;
        }
 
        ornImage = cvRetrieveFrame(camera);
        cvCvtColor(ornImage, grayImage, CV_BGR2GRAY);
        cvShowImage("ornImage", ornImage);
        cvShowImage("grayImage", grayImage);
 
        key = cvWaitKey(1);
        if (key == 27)
        {
            break;
        }
    }
    return 0;
}
 

#공부

#결과