最大的问题在于,不管我在VideoCapture cap()中输入哪个数字,它总是能找到我笔记本电脑的内部webcap--否则就死定了。我试过进入设备并关闭内部webcap,但效果不大。(顺便说一句,我是这个论坛的新手,所以要温和一点。)
下面是代码(不包括旋转功能。)
int main()
{
// NOW WITH WEBCAM INPUT!!
VideoCapture cap(0);//capture image from webcam
cap.open(true);
Mat image;
cap>>image; //applying the captured image to Mat image
//Mat image = imread("Tulips.jpg"); // reading the image
double degrees; // Number of degrees we want to rotate the image
double oregoX = image.cols / 2; //X-center of the image
double oregoY = image.rows / 2; //Y-center of the image
//user inputs
cout << "please enter the number of degrees you wish to turn the image" << endl;
cin >> degrees;
cout << "\n\nplease enter at which point (X, Y) you want to rotate the image\n(make space not comma)\n" << endl;
cout << "The center of the image is at " << oregoX << ", " << oregoY << endl;
cin >> oregoX >> oregoY;
while (true){
cap>>image;
if (!image.data) break;
if (waitKey(30) >= 0) break;
cvtColor(image, image, CV_8U); //Converting image to 8-bit
Mat grayImage; //creating a canvas for the grayscale image
cvtColor(image, grayImage, CV_RGB2GRAY); //creating the grayscale image
// Here we create a canvas with the same size as the input image, later to put in the rotated data
Mat imageOut(grayImage.rows, grayImage.cols, CV_8U);
Rotation(grayImage, imageOut, degrees, oregoX, oregoY); //Performing the rotation on the image using the Rotation() funcion
imshow("The Gray Image", grayImage);
imshow("The rotated image", imageOut);
}
}
2条答案
按热度按时间ukdjmx9f1#
设备管理器-〉查找内置网络摄像头-〉禁用内置网络摄像头。默认网络摄像头将成为您以后插入的任何网络摄像头。
mfuanj7w2#