OPENCV在实时摄像机供稿中更改颜色

OpenCV change colors in real time camera feed

本文关键字：颜色 实时 摄像机 OPENCV      更新时间：2023-10-16

我正在使用opencv 2.4.9。我在新窗口中使用OpenCV运行相机打开相机。我想更改钥匙按下的相机进纸的颜色。例如，当我单击" 1'相机提要"为灰度时，" 2" ->黑白，" 3" -> hsv，当我按'ESC'返回时(0(。到目前为止，我出现了这一点：

#include <iostream>
#include <conio.h>
using namespace std;
#include<opencvcv.h>
#include<opencvhighgui.h>
#include "opencv2corecore.hpp"
#include "opencv2imgprocimgproc.hpp"

void main(){
  CvCapture *capture = cvCaptureFromCAM(CV_CAP_ANY);
  IplImage *frame = 0, *image = 0;
  int key = 0, last = 0;
  cvNamedWindow("WebCamera", CV_WINDOW_AUTOSIZE);
  while(key != 27)  {
          frame = cvQueryFrame(capture);
          image = cvCloneImage(frame);
        // i try to use swich and case for this but i can't get it work
        // when using cvtColor need to use Mat image but when use cvShowImage need IplImage 
        //  switch(last)
        //  {
        //      case '1': 
        //           cvtColor(image,HSVimage,CV_BGR2HSV);
        //      case '2': 
        //           cvtColor(image,HSVimage,CV_BGR2GRAY);
        //      case '3': 
        //           . 
        //           .
        //      default: break;
        //  }

          cvShowImage("WebCamera", image);
          cvReleaseImage(&image);
          key = cvWaitKey(1);
          if (key != -1) last = key;
  }
  cvDestroyWindow("WebCamera");
  cvReleaseCapture(&capture);
  exit(0);
}

我想在同一窗口中一次又一次地更改颜色，或者(如果不可能(打开并关闭每个颜色过滤器的窗口。谢谢。对不起，英语不好

它应该与下面的代码一起使用。从该OpenCV教程和OpenCV文档中获取它。

#include "opencv2/opencv.hpp"
#include <iostream>
using namespace cv;
using namespace std;
int main()
{
    int key = 0, last = 0;
    VideoCapture cap(0); // open the default camera
    if(!cap.isOpened()) // check if we camera is opened
    { 
        cout << "Cannot open selected camera" << endl;
        return -1;   
    } 
    namedWindow("Capture",1);
    Mat convertedImage;
    for(;;) //Loop until user hit "esc"
    {
        Mat frame;
        cap >> frame; // get a new frame from camera            
        switch(last)
        {
           case '1':
           { 
               cvtColor(frame,convertedImage,CV_BGR2GRAY);
               break;
           }
          case '2': //Binarization to generate Black/White image
          {
               Mat img_gray;
               cvtColor(frame,img_gray,CV_BGR2GRAY); //First convert to gray
               //Binarization. Use your parameters here or try adaptiveThreshold
               threshold(img_gray, convertedIamge, 0, 255, CV_THRESH_BINARY | CV_THRESH_OTSU); 
          }
          case '3': 
          {  
              cvtColor(frame,convertedImage,CV_BGR2HSV);
              break;
          }
          default: //use to prevent ecxeption at program start or use case '0' to show original image
          {
                  convertedImage = frame;
          }
        }
        imshow("Capture", convertedImage); //show converted image
        key = waitKey(1);
        if (key != -1)             
            last = key;  
        if(key == 27)
          break;            
        // the camera will be deinitialized automatically in VideoCapture destructor
    }
    return 0;
}

我没有检查此(编译(..但是我认为它可以帮助您。

#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include <iostream>
using namespace cv;
using namespace std;
int main() {
VideoCapture stream1(0);
if (!stream1.isOpened()) { cout << "cannot open camera"; }
while (true) {
Mat cameraFrame;
stream1.read(cameraFrame);
switch(last)
{
case '1': 
cvtColor(image,HSVimage,CV_BGR2HSV);
break;
case '2': 
cvtColor(image,HSVimage,CV_BGR2GRAY);
break;
case '3': 
...}
imshow("cam", cameraFrame);
key = cvWaitKey(1);
if (key != -1) last = key;
}
return 0;
}
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