Opencv_webcom_samples

opencv.h

#include "opencv2\opencv.hpp"

#ifdef _WIN64

#ifdef _DEBUG
	#pragma comment(lib,"C:\\opencv\\opencv2411\\build\\x64\\vc10\\lib\\opencv_core2411d.lib")
	#pragma comment(lib,"C:\\opencv\\opencv2411\\build\\x64\\vc10\\lib\\opencv_imgproc2411d.lib")
	#pragma comment(lib,"C:\\opencv\\opencv2411\\build\\x64\\vc10\\lib\\opencv_highgui2411d.lib")
	#pragma comment(lib,"C:\\opencv\\opencv2411\\build\\x64\\vc10\\lib\\opencv_ml2411d.lib")
	#pragma comment(lib,"C:\\opencv\\opencv2411\\build\\x64\\vc10\\lib\\opencv_objdetect2411d.lib")
#else
	#pragma comment(lib,"C:\\opencv\\opencv2411\\build\\x64\\vc10\\lib\\opencv_core2411.lib")
	#pragma comment(lib,"C:\\opencv\\opencv2411\\build\\x64\\vc10\\lib\\opencv_imgproc2411.lib")
	#pragma comment(lib,"C:\\opencv\\opencv2411\\build\\x64\\vc10\\lib\\opencv_highgui2411.lib")
	#pragma comment(lib,"C:\\opencv\\opencv2411\\build\\x64\\vc10\\lib\\opencv_ml2411.lib")
	#pragma comment(lib,"C:\\opencv\\opencv2411\\build\\x64\\vc10\\lib\\opencv_objdetect2411.lib")
#endif

#else

#ifdef _DEBUG
	#pragma comment(lib,"C:\\opencv\\opencv2411\\build\\x86\\vc10\\lib\\opencv_core2411d.lib")
	#pragma comment(lib,"C:\\opencv\\opencv2411\\build\\x86\\vc10\\lib\\opencv_imgproc2411d.lib")
	#pragma comment(lib,"C:\\opencv\\opencv2411\\build\\x86\\vc10\\lib\\opencv_highgui2411d.lib")
	#pragma comment(lib,"C:\\opencv\\opencv2411\\build\\x86\\vc10\\lib\\opencv_ml2411d.lib")
	#pragma comment(lib,"C:\\opencv\\opencv2411\\build\\x86\\vc10\\lib\\opencv_objdetect2411d.lib")
#else
	#pragma comment(lib,"C:\\opencv\\opencv2411\\build\\x86\\vc10\\lib\\opencv_core2411.lib")
	#pragma comment(lib,"C:\\opencv\\opencv2411\\build\\x86\\vc10\\lib\\opencv_imgproc2411.lib")
	#pragma comment(lib,"C:\\opencv\\opencv2411\\build\\x86\\vc10\\lib\\opencv_highgui2411.lib")
	#pragma comment(lib,"C:\\opencv\\opencv2411\\build\\x86\\vc10\\lib\\opencv_ml2411.lib")
	#pragma comment(lib,"C:\\opencv\\opencv2411\\build\\x86\\vc10\\lib\\opencv_objdetect2411.lib")
#endif

#endif

usb3camera.cpp

#include "opencv2/opencv.hpp"

int main(int argh, char* argv[])
{
	cv::VideoCapture cap(0);
	cap.set(CV_CAP_PROP_FRAME_WIDTH, 1000);
	cap.set(CV_CAP_PROP_FRAME_HEIGHT, 1000);
	cap.set(CV_CAP_PROP_FPS, 100);
	cap.set(CV_CAP_PROP_FORMAT, CV_8UC1);


	if (!cap.isOpened())
	{
		return -1;
	}

	int cnt = 0;
	int oldcnt = 0;
	int64 nowTime = 0;
	int64 diffTime = 0;
	int fps = 0;
	const double f = (1000 / cv::getTickFrequency());

	int64 startTime = cv::getTickCount();

	while (1)
	{
		//calc FPS
		nowTime = cv::getTickCount();
		diffTime = (int)((nowTime - startTime)*f);

		if (diffTime >= 1000) {
			startTime = nowTime;
			fps = cnt - oldcnt;
			oldcnt = cnt;
		}
		std::ostringstream os;
		os << fps << "Frames/sec";
		std::string number = os.str();


		//original img
		cv::Mat img;
		cap >> img;
		cv::Mat img0 = img.clone();
		cv::putText(img0, number, cv::Point(50, 100), cv::FONT_HERSHEY_SIMPLEX, 1, cv::Scalar(255, 255, 255), 2, CV_AA);
		cv::imshow("camera", img0);



		int key = cv::waitKey(1);
		if (key == 113)//q
		{
			break;
		}
		else if (key == 115)
		{
			cv::imwrite("img.png", img);
		}

		cnt++;
	}
	cv::destroyAllWindows();
	return 0;
}

webcam.cpp

#include "..\opencv.h"
#include <vector>



int main( int argc, char **argv )
{
	cv::VideoCapture cap;
	cap.open(1);
	cv::namedWindow("camera", CV_WINDOW_AUTOSIZE|CV_WINDOW_FREERATIO);

	while ( 1 ) {
		cv::Mat img;
		cap >> img;

		cv::Mat img0 = img.clone();
		cv::imshow("camera", img0);

		char ch = cv::waitKey(30);
		if ( ch == 27 ) break;// press [Esc] 
	}

	cv::destroyAllWindows();
	return 0;
}

webcam_face.cpp

#include "..\opencv.h"
#include <vector>



int main( int argc, char **argv )
{

	//http://opencv.jp/cookbook/opencv_img.html
	std::string cascadeName = "C:\\opencv\\opencv2411\\build\\share\\OpenCV\\haarcascades\\haarcascade_frontalface_alt.xml";
	cv::CascadeClassifier cascade;
	if(!cascade.load(cascadeName))
		return -1;


	cv::VideoCapture cap;
	cap.open(1);
	cv::namedWindow("camera", CV_WINDOW_AUTOSIZE|CV_WINDOW_FREERATIO);
	
	std::vector<cv::Rect> rect_faces;



	while ( 1 ) {
		cv::Mat img;
		cap >> img;
		cv::Mat img0 = img.clone();

		//face detection
		rect_faces.clear();
		cascade.detectMultiScale(
			img0,
			rect_faces,
			1.1, 2,
			CV_HAAR_SCALE_IMAGE,
			cv::Size(30, 30));

		//image process for each area
		std::vector<cv::Rect>::const_iterator r = rect_faces.begin();
		for(; r != rect_faces.end(); ++r) {
			cv::rectangle(img0, r->tl(), r->br(), cv::Scalar(200,200,0), 1, CV_AA);
			cv::Mat mosaic = img0(*r).clone();
			cv::resize(mosaic, mosaic, cv::Size(), 0.05, 0.05);
			cv::resize(mosaic, mosaic, r->size(),0,0,cv::INTER_NEAREST);
			cv::Mat facearea = img0(*r);
			mosaic.copyTo(facearea);
		}
		
		cv::imshow("camera", img0);


		char ch = cv::waitKey(30);
		if ( ch == 27 ) break;// press [Esc] 
	}

	cv::destroyAllWindows();
	return 0;
}

webcam_imgproc.cpp

#include "..\opencv.h"
#include <vector>


//displaying fps
//http://iwaki2009.blogspot.jp/2012/08/opencvfps.html


int main( int argc, char **argv )
{
	cv::VideoCapture cap;
	cap.open(1);
	cv::namedWindow("camera", CV_WINDOW_AUTOSIZE|CV_WINDOW_FREERATIO);
	cv::namedWindow("canny", CV_WINDOW_AUTOSIZE|CV_WINDOW_FREERATIO);

	int cnt = 0;
	int oldcnt = 0;
	int64 nowTime = 0;
	int64 diffTime = 0;
	int fps = 0;
	const double f = (1000 /cv::getTickFrequency());

	int64 startTime = cv::getTickCount();

	//loop start
	while ( 1 ) {

		//calc FPS
		nowTime = cv::getTickCount();  
		diffTime = (int)((nowTime- startTime)*f);

		if (diffTime >= 1000) {
			startTime = nowTime;
			fps = cnt - oldcnt;
			oldcnt = cnt;
		}
		std::ostringstream os;
		os << fps << "Frames/sec";
		std::string number = os.str();


		//original img
		cv::Mat img;
		cap >> img;
		cv::Mat img0 = img.clone();
		cv::imshow("camera", img0);

		//canny
		cv::Mat img_canny;
		cv::resize(img0, img_canny, cv::Size(), 0.5, 0.5);
		cv::cvtColor(img_canny, img_canny, CV_BGR2GRAY);
		cv::GaussianBlur( img_canny, img_canny, cv::Size(15, 15), 2, 2 );
		cv::Canny( img_canny, img_canny, 5, 50, 3 );
		cv::putText(img_canny, number, cv::Point(50,100), cv::FONT_HERSHEY_SIMPLEX, 1, cv::Scalar(255,255,255), 2, CV_AA);
		cv::imshow("canny", img_canny);


		//escape
		char ch = cv::waitKey(30);
		if ( ch == 27 ) break;// press [Esc] 
		
		cnt++;
	}

	cv::destroyAllWindows();
	return 0;
}