Opencv相機分辨率問題

您好，我正在基於模板匹配項目工作。我需要一個相機接口。我的代碼面臨的問題與相機分辨率有關。我需要使用我的Logitech HD C270網絡攝像頭獲得最高分辨率。是否有可能獲得640x480或更高的分辨率？Opencv相機分辨率問題

這是我的代碼，我試圖獲得640x480分辨率，但我得到一些錯誤。請幫忙。的#include 的#include 的#include 的#include

using namespace cv; 
using namespace std; 
int n = 0; 
static char cam_image[200]; 


int capture_image(cv::Mat& frame_in) { 

VideoCapture capture(-1); //try to open string, this will attempt to open it as a video file or image sequence 
     if (!capture.isOpened()) //if this fails, try to open as a video camera,  through the use of an integer param 
    capture.open(-1); 
    capture = cvCreateCameraCapture(-1); 
      cvSetCaptureProperty(capture, CV_CAP_PROP_FRAME_WIDTH, 640); 
      cvSetCaptureProperty(capture, CV_CAP_PROP_FRAME_HEIGHT, 480); 
      //videoFrame = cvQueryFrame(capture); 
     if (!capture.isOpened()) { 
    cerr << "Failed to open the video device, video file or image sequence!\n" << endl; 
    //help(av); 
    return 1; 
     } 

    string window_name = "Reference Image"; 
     namedWindow(window_name, CV_WINDOW_KEEPRATIO); //resizable window; 
    Mat frame; 

    capture >> frame; 
     if (frame.empty()); 
    frame_in= frame; 
    imshow(window_name, frame); 
    waitKey(30); 
    sprintf(cam_image,"filename%.3d.jpg",n++); 
    imwrite(cam_image,frame); 
    cout << "Saved " << cam_image << endl; 

    return 0; 

} 





camera.h: In function ‘int capture_image(cv::Mat&)’: 
camera.h:17:43: error: invalid conversion from ‘CvCapture*’ to ‘int’ [-fpermissive] 
/usr/local/include/opencv2/highgui/highgui.hpp:209:13: error: initializing argument 1 of ‘cv::VideoCapture::VideoCapture(int)’ [-fpermissive] 
camera.h:18:65: error: cannot convert ‘cv::VideoCapture’ to ‘CvCapture*’ for argument ‘1’ to ‘int cvSetCaptureProperty(CvCapture*, int, double)’ 
camera.h:19:66: error: cannot convert ‘cv::VideoCapture’ to ‘CvCapture*’ for argument ‘1’ to ‘int cvSetCaptureProperty(CvCapture*, int, double)’

來源

2014-07-21 Kunal Sonone

我覺得你混合C和C++代碼樣本。 cvXXX()函數用於C API，應該是C++中的方法。我想這一點，它的工作對我來說：

cv::VideoCapture cap(opts.device); 
cap.set(CV_CAP_PROP_FRAME_WIDTH, 640); 
cap.set(CV_CAP_PROP_FRAME_HEIGHT, 480); 
cap >> frame;

這麼簡單，沒有過多的open()秒。

來源

2014-07-21 14:35:11

Opencv相機分辨率問題

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