When I try to open a video capture on my webcam, it doesn’t open it. This is my code:
#include <stdio.h>
#include <opencv2/opencv.hpp>
#include "opencv2/objdetect.hpp"
#include "opencv2/highgui.hpp"
#include "opencv2/imgproc.hpp"
#include <iostream>
#include "C:/Users/lucal/OneDrive/Dokumente/libraries/simple-serial-port/SimpleSerial.h"
#include <Mmsystem.h>
#include <mciapi.h>
#include <random>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <chrono>
#include <thread>
#include <time.h>
#include <fstream>
#pragma comment(lib, "Winmm.lib")
using namespace std;
using namespace cv;
int detectFace(Mat frame);
void playGenericVoiceLine();
CascadeClassifier face_cascade;
random_device rd;
int main(int argc, const char** argv) {
String face_cascade_name = "C:/Users/lucal/OneDrive/Dokumente/libraries/opencv/sources/data/haarcascades/haarcascade_frontalface_alt.xml";
if (!face_cascade.load(face_cascade_name)) {
cout << "Error loading face cascaden";
return(-1);
};
VideoCapture capture;
capture.open(0);
if ( ! capture.isOpened()) {
cout << "Error opening video capturen";
return -1;
}
Mat frame;
while (true) {
capture.read(frame);
if( frame.empty()) {
cout << "Error capturing framen";
}
int facesOnFrame = detectFace(frame);
if (facesOnFrame != 0) {
// playGenericVoiceLine();
int originalFaceCount = facesOnFrame;
while (facesOnFrame == originalFaceCount) {
capture.read(frame);
if( frame.empty()) {
cout << "Error capturing framen";
}
int facesOnFrame = detectFace(frame);
}
};
if (waitKey(10) == 'q') {
break;
}
}
return(0);
}
int detectFace(Mat frame) {
Mat frame_gray;
cvtColor(frame, frame_gray, COLOR_BGR2GRAY);
equalizeHist(frame_gray, frame_gray);
vector<Rect> faces;
face_cascade.detectMultiScale(frame_gray, faces);
if( faces.size() != 0) {
for ( size_t i = 0; i < faces.size(); i++ ) {
Point center( faces[i].x + faces[i].width/2, faces[i].y + faces[i].height/2 );
ellipse( frame, center, Size( faces[i].width/2, faces[i].height/2 ), 0, 0, 360, Scalar( 255, 0, 255 ), 4 );
}
return int(faces.size());
}
else {
return 0;
}
}
void playGenericVoiceLine() {
uniform_int_distribution<int> dist(1,1);
int randomVoiceLine = dist(rd);
char com_port[] = "\\.\COM3";
DWORD COM_BAUD_RATE = CBR_9600;
SimpleSerial Serial(com_port, COM_BAUD_RATE);
if( ! Serial.IsConnected()) {
cout << "Error finding the Arduinon";
}
if(Serial.IsConnected()) {
bool is_sent = Serial.WriteSerialPort("J");
if( ! is_sent) {
cout << "Error sending message to the Arduinon";
}
}
string file_name = to_string(randomVoiceLine) + ".mp3";
string command = "open "" + file_name + "" type mpegvideo alias voiceLine";
mciSendString(command.c_str(), NULL, 0, NULL);
mciSendString("play voiceLine wait", NULL, 0, NULL);
mciSendString("close voiceLine", NULL, 0, NULL);
bool is_sent = Serial.WriteSerialPort("V");
if( ! is_sent) {
cout << "Error sending message to the Arduinon";
}
}
I declare to open the video capture of the camera 0, but when running the code it doesn’t open a new window with the capture, am I doing something wrong in the code. When running the code I get this terminal message:
PS C:UserslucalOneDriveDesktopradbuildDebug> ."C:/Users/lucal/OneDrive/Desktop/rad/build/Debug/rad.exe"
[ INFO:[email protected]] global videoio_registry.cpp:244 cv::`anonymous-namespace'::VideoBackendRegistry::VideoBackendRegistry VIDEOIO: Enabled backends(9, sorted by priority): FFMPEG(1000); GSTREAMER(990); INTEL_MFX(980); MSMF(970); DSHOW(960); CV_IMAGES(950); CV_MJPEG(940); UEYE(930); OBSENSOR(920)
[ INFO:[email protected]] global backend_plugin.cpp:383 cv::impl::getPluginCandidates Found 2 plugin(s) for GSTREAMER
[ INFO:[email protected]] global plugin_loader.impl.hpp:67 cv::plugin::impl::DynamicLib::libraryLoad load C:UserslucalOneDriveDokumentelibrariesopencvbuildx64vc16binopencv_videoio_gstreamer490_64d.dll => FAILED
[ INFO:[email protected]] global plugin_loader.impl.hpp:67 cv::plugin::impl::DynamicLib::libraryLoad load opencv_videoio_gstreamer490_64d.dll => FAILED
[ INFO:[email protected]] global backend_plugin.cpp:383 cv::impl::getPluginCandidates Found 2 plugin(s) for MSMF
[ INFO:[email protected]] global plugin_loader.impl.hpp:67 cv::plugin::impl::DynamicLib::libraryLoad load C:UserslucalOneDriveDokumentelibrariesopencvbuildx64vc16binopencv_videoio_msmf490_64d.dll => OK
[ INFO:[email protected]] global backend_plugin.cpp:50 cv::impl::PluginBackend::initCaptureAPI Found entry: 'opencv_videoio_capture_plugin_init_v1'
[ INFO:[email protected]] global backend_plugin.cpp:169 cv::impl::PluginBackend::checkCompatibility Video I/O: initialized 'Microsoft Media Foundation OpenCV
Video I/O plugin': built with OpenCV 4.9 (ABI/API = 1/1), current OpenCV version is '4.9.0' (ABI/API = 1/1)
[ INFO:[email protected]] global backend_plugin.cpp:69 cv::impl::PluginBackend::initCaptureAPI Video I/O: plugin is ready to use 'Microsoft Media Foundation OpenCV Video I/O plugin'
[ INFO:[email protected]] global backend_plugin.cpp:84 cv::impl::PluginBackend::initWriterAPI Found entry: 'opencv_videoio_writer_plugin_init_v1'
[ INFO:[email protected]] global backend_plugin.cpp:169 cv::impl::PluginBackend::checkCompatibility Video I/O: initialized 'Microsoft Media Foundation OpenCV
Video I/O plugin': built with OpenCV 4.9 (ABI/API = 1/1), current OpenCV version is '4.9.0' (ABI/API = 1/1)
[ INFO:[email protected]] global backend_plugin.cpp:103 cv::impl::PluginBackend::initWriterAPI Video I/O: plugin is ready to use 'Microsoft Media Foundation OpenCV Video I/O plugin'
[ INFO:[email protected]] global cap_msmf.cpp:1031 CvCapture_MSMF::configureHW MSMF: Using D3D11 video acceleration on GPU device: AMD Radeon(TM) Vega 8 Graphics
[ INFO:[email protected]] global registry_parallel.impl.hpp:96 cv::parallel::ParallelBackendRegistry::ParallelBackendRegistry core(parallel): Enabled backends(3, sorted by priority): ONETBB(1000); TBB(990); OPENMP(980)
[ INFO:[email protected]] global plugin_loader.impl.hpp:67 cv::plugin::impl::DynamicLib::libraryLoad load C:UserslucalOneDriveDokumentelibrariesopencvbuildx64vc16binopencv_core_parallel_onetbb490_64d.dll => FAILED
[ INFO:[email protected]] global plugin_loader.impl.hpp:67 cv::plugin::impl::DynamicLib::libraryLoad load opencv_core_parallel_onetbb490_64d.dll => FAILED
[ INFO:[email protected]] global plugin_loader.impl.hpp:67 cv::plugin::impl::DynamicLib::libraryLoad load C:UserslucalOneDriveDokumentelibrariesopencvbuildx64vc16binopencv_core_parallel_tbb490_64d.dll => FAILED
[ INFO:[email protected]] global plugin_loader.impl.hpp:67 cv::plugin::impl::DynamicLib::libraryLoad load opencv_core_parallel_tbb490_64d.dll => FAILED
[ INFO:[email protected]] global plugin_loader.impl.hpp:67 cv::plugin::impl::DynamicLib::libraryLoad load C:UserslucalOneDriveDokumentelibrariesopencvbuildx64vc16binopencv_core_parallel_openmp490_64d.dll => FAILED
[ INFO:[email protected]] global plugin_loader.impl.hpp:67 cv::plugin::impl::DynamicLib::libraryLoad load opencv_core_parallel_openmp490_64d.dll => FAILED
[ INFO:[email protected]] global ocl.cpp:1185 cv::ocl::haveOpenCL Initialize OpenCL runtime...
[ INFO:[email protected]] global ocl.cpp:1191 cv::ocl::haveOpenCL OpenCL: found 1 platforms
[ INFO:[email protected]] global ocl.cpp:983 cv::ocl::OpenCLExecutionContext::Impl::getInitializedExecutionContext OpenCL: initializing thread execution context
[ INFO:[email protected]] global ocl.cpp:993 cv::ocl::OpenCLExecutionContext::Impl::getInitializedExecutionContext OpenCL: creating new execution context...
[ INFO:[email protected]] global ocl.cpp:1011 cv::ocl::OpenCLExecutionContext::Impl::getInitializedExecutionContext OpenCL: device=gfx902
[ INFO:[email protected]] global ocl.cpp:5369 cv::ocl::Context::Impl::__init_buffer_pools OpenCL: Initializing buffer pool for context@0 with max capacity: poolSize=0 poolSizeHostPtr=0
[ INFO:[email protected]] global registry.impl.hpp:114 cv::highgui_backend::UIBackendRegistry::UIBackendRegistry UI: Enabled backends(4, sorted by priority):
GTK(1000); GTK3(990); GTK2(980); WIN32(970) + BUILTIN(WIN32UI)
[ INFO:[email protected]] global plugin_loader.impl.hpp:67 cv::plugin::impl::DynamicLib::libraryLoad load C:UserslucalOneDriveDokumentelibrariesopencvbuildx64vc16binopencv_highgui_gtk490_64.dll => FAILED
[ INFO:[email protected]] global plugin_loader.impl.hpp:67 cv::plugin::impl::DynamicLib::libraryLoad load opencv_highgui_gtk490_64.dll => FAILED
[ INFO:[email protected]] global plugin_loader.impl.hpp:67 cv::plugin::impl::DynamicLib::libraryLoad load C:UserslucalOneDriveDokumentelibrariesopencvbuildx64vc16binopencv_highgui_gtk3490_64.dll => FAILED
[ INFO:[email protected]] global plugin_loader.impl.hpp:67 cv::plugin::impl::DynamicLib::libraryLoad load opencv_highgui_gtk3490_64.dll => FAILED
[ INFO:[email protected]] global plugin_loader.impl.hpp:67 cv::plugin::impl::DynamicLib::libraryLoad load C:UserslucalOneDriveDokumentelibrariesopencvbuildx64vc16binopencv_highgui_gtk2490_64.dll => FAILED
[ INFO:[email protected]] global plugin_loader.impl.hpp:67 cv::plugin::impl::DynamicLib::libraryLoad load opencv_highgui_gtk2490_64.dll => FAILED
[ INFO:[email protected]] global backend.cpp:90 cv::highgui_backend::createUIBackend UI: using backend: WIN32 (priority=970)
I was expecting my code to open a new window with the capture of the webcam and draw a circle around any facces. I tried downloading gstreamer online but didn#t find anything, I#ve already tried deleting and rebuilding my build files. This is my CmakeLists.txt file:
cmake_minimum_required(VERSION 3.10)
project(rad)
find_package(OpenCV REQUIRED)
include_directories(${OpenCV_INCLUDE_DIRS})
include_directories(C:/libraries/simple-serial-port)
add_executable(${PROJECT_NAME} src/Main.cpp C:/libraries/simple-serial-port/SimpleSerial.cpp)
target_link_libraries(${PROJECT_NAME} ${OpenCV_LIBS})
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