Opencv erkennt Kamara nicht

**organ** · 12.11.2018, 13:28

Ich wollte hier fragen ob jemand eine Idee hat warum mein Programm meine Webcam nicht erkennt.
Ich versuch mich bisschen mit tracking zyu beschäftigen.
System Ubuntu 16
Kamara würde mit chees gestestet und funktioniert
Programm funktioniert mit video.

Das ist die ausgabe die ich durch getBuildInformation() bekomme

OpenCV version :
General configuration for OpenCV 4.0.0-pre =====================================
Version control: 4.0.0-beta-41-geb981cc7d

Extra modules:
Location (extra): /opt/opencv_contrib/modules
Version control (extra): 4.0.0-beta-4-gfd63e177

Platform:
Timestamp: 2018-10-26T08:48:21Z
Host: Linux 4.15.0-36-generic x86_64
CMake: 3.10.2
CMake generator: Unix Makefiles
CMake build tool: /usr/bin/make
Configuration: RELEASE

CPU/HW features:
Baseline: SSE SSE2 SSE3
requested: SSE3
disabled: AVX
Dispatched code generation: SSE4_1 SSE4_2 FP16 AVX AVX2 AVX512_SKX
requested: SSE4_1 SSE4_2 AVX FP16 AVX2 AVX512_SKX
SSE4_1 (3 files): + SSSE3 SSE4_1
SSE4_2 (1 files): + SSSE3 SSE4_1 POPCNT SSE4_2
FP16 (0 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 AVX
AVX (5 files): + SSSE3 SSE4_1 POPCNT SSE4_2 AVX
AVX2 (9 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2
AVX512_SKX (1 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2 AVX_512F AVX512_SKX

C/C++:
Built as dynamic libs?: YES
C++ Compiler: /usr/bin/c++ (ver 7.3.0)
C++ flags (Release): -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG -DNDEBUG
C++ flags (Debug): -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -g -O0 -DDEBUG -D_DEBUG
C Compiler: /usr/bin/cc
C flags (Release): -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Winit-self -Wno-narrowing -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -O3 -DNDEBUG -DNDEBUG
C flags (Debug): -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Winit-self -Wno-narrowing -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -g -O0 -DDEBUG -D_DEBUG
Linker flags (Release):
Linker flags (Debug):
ccache: NO
Precompiled headers: YES
Extra dependencies: dl m pthread rt
3rdparty dependencies:

OpenCV modules:
To be built: aruco bgsegm bioinspired calib3d ccalib core datasets dnn dnn_objdetect dpm face features2d flann freetype fuzzy gapi hfs highgui img_hash imgcodecs imgproc java_bindings_generator line_descriptor ml objdetect optflow phase_unwrapping photo plot python2 python3 python_bindings_generator reg rgbd saliency shape stereo stitching structured_light superres surface_matching text tracking video videoio videostab xfeatures2d ximgproc xobjdetect xphoto
Disabled: world
Disabled by dependency: -
Unavailable: cnn_3dobj cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev cvv hdf java js matlab ovis sfm ts viz
Applications: apps
Documentation: NO
Non-free algorithms: NO

GUI:
GTK+: YES (ver 2.24.32)
GThread : YES (ver 2.56.2)
GtkGlExt: NO

Media I/O:
ZLib: /usr/lib/x86_64-linux-gnu/libz.so (ver 1.2.11)
JPEG: /usr/lib/x86_64-linux-gnu/libjpeg.so (ver 80)
WEBP: build (ver encoder: 0x020e)
PNG: /usr/lib/x86_64-linux-gnu/libpng.so (ver 1.6.34)
TIFF: build (ver 42 - 4.0.9)
JPEG 2000: build (ver 1.900.1)
OpenEXR: build (ver 1.7.1)
HDR: YES
SUNRASTER: YES
PXM: YES
PFM: YES

Video I/O:
DC1394: NO
FFMPEG: YES
avcodec: YES (ver 57.107.100)
avformat: YES (ver 57.83.100)
avutil: YES (ver 55.78.100)
swscale: YES (ver 4.8.100)
avresample: NO
GStreamer: NO

Parallel framework: TBB (ver 2018.0 interface 10001)

Trace: YES (with Intel ITT)

Other third-party libraries:
Lapack: NO
Custom HAL: NO
Protobuf: build (3.5.1)

Python 2:
Interpreter: /usr/bin/python2.7 (ver 2.7.15)
Libraries: /usr/lib/x86_64-linux-gnu/libpython2.7.so (ver 2.7.15rc1)
numpy: /home/kico/.local/lib/python2.7/site-packages/numpy/core/include (ver 1.15.2)
packages path: lib/python2.7/dist-packages

Python 3:
Interpreter: /usr/bin/python3 (ver 3.6.6)
Libraries: /usr/lib/x86_64-linux-gnu/libpython3.6m.so (ver 3.6.6)
numpy: /home/kico/.local/lib/python3.6/site-packages/numpy/core/include (ver 1.15.2)
packages path: lib/python3.6/dist-packages

Python (for build): /usr/bin/python2.7

Java:
ant: NO
JNI: NO
Java wrappers: NO
Java tests: NO

Install to: /usr/local
-----------------------------------------------------------------

Hier der Programmcode

#include <opencv2/opencv.hpp>
#include <opencv2/tracking.hpp>
#include <opencv2/core/ocl.hpp>
#include <opencv2/tracking/tracker.hpp>
#include <opencv2/tracking/tldDataset.hpp>

#include <iostream>
#include <stdio.h>

using namespace cv;
using namespace std;

// Convert to string
#define SSTR( x ) static_cast< std:

stringstream & >( \
( std:

stringstream() << std::dec << x ) ).str()

int main(int argc, char **argv)
{
// List of tracker types in OpenCV 3.4.1
string trackerTypes[8] = {"BOOSTING", "MIL", "KCF", "TLD","MEDIANFLOW", "GOTURN", "MOSSE", "CSRT"};
// vector <string> trackerTypes(types, std::end(types));

// Create a tracker
string trackerType = trackerTypes[2];

Ptr<Tracker> tracker;

#if (CV_MINOR_VERSION < 3)
{
tracker = TrackerMIL::create();// tracker = Tracker::create(trackerType);

}
#else
{
if (trackerType == "BOOSTING")
tracker = TrackerBoosting::create();
if (trackerType == "MIL")
tracker = TrackerMIL::create();
if (trackerType == "KCF")
tracker = TrackerKCF::create();
if (trackerType == "TLD")
tracker = TrackerTLD::create();
if (trackerType == "MEDIANFLOW")
tracker = TrackerMedianFlow::create();
if (trackerType == "GOTURN")
tracker = TrackerGOTURN::create();
if (trackerType == "MOSSE")
tracker = TrackerMOSSE::create();
if (trackerType == "CSRT")
tracker = TrackerCSRT::create();
}
#endif
// Read video
int camaraNumber =0;
VideoCapture video ;
//video.release();
video.open(0);//video.open( "/dev/video0");video.open(-1);
// Exit if video is not opened
cout << "OpenCV version : " << getBuildInformation() << endl;

/* if(!video.isOpened())
{
cout << "Could not read video file" << endl;
cout << "OpenCV version : " << CV_VERSION << endl;
cout << "Major version : " << CV_MAJOR_VERSION << endl;
cout << "Minor version : " << CV_MINOR_VERSION << endl;
cout << "Subminor version : " << CV_SUBMINOR_VERSION << endl;
return 1;
} */

// Read first frame
Mat frame;
bool ok = video.read(frame);

// Define initial bounding box
Rect2d bbox(287, 23, 86, 320);

// Uncomment the line below to select a different bounding box
// bbox = selectROI(frame, false);
// Display bounding box.
rectangle(frame, bbox, Scalar( 255, 0, 0 ), 2, 1 );

imshow("Tracking", frame);
tracker->init(frame, bbox);

while(video.read(frame))
{
// Start timer
double timer = (double)getTickCount();

// Update the tracking result
bool ok = tracker->update(frame, bbox);

// Calculate Frames per second (FPS)
float fps = getTickFrequency() / ((double)getTickCount() - timer);

if (ok)
{
// Tracking success : Draw the tracked object
rectangle(frame, bbox, Scalar( 255, 0, 0 ), 2, 1 );
}
else
{
// Tracking failure detected.
putText(frame, "Tracking failure detected", Point(100,80), FONT_HERSHEY_SIMPLEX, 0.75, Scalar(0,0,255),2);
}

// Display tracker type on frame
putText(frame, trackerType + " Tracker", Point(100,20), FONT_HERSHEY_SIMPLEX, 0.75, Scalar(50,170,50),2);

// Display FPS on frame
putText(frame, "FPS : " + SSTR(int(fps)), Point(100,50), FONT_HERSHEY_SIMPLEX, 0.75, Scalar(50,170,50), 2);

// Display frame.
imshow("Tracking", frame);

// Exit if ESC pressed.
int k = waitKey(1);
if(k == 27)
{
break;
}

}
video.release();
destroyAllWindows();
}