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cv::VideoCapture

VideoCapture::open

Top / VideoCapture::open

bool  VideoCapture::open(int cameraNum, int apiPreference)

OpenCV/バックエンド

• VideoCapture capture(0+cv::CAP_DSHOW); // open the default camera using DirectShow

呼び出し

OpenCV 3.4.2

• VideoCapture::open(int cameraNum, int apiPreference)
  • cv::VideoBackendRegistry::getAvailableBackends_CaptureByIndex
  • VideoCapture_create

OpenCV 3.2

• 追加: VideoCapture::open(int cameraNum, int apiPreference)
  • cvCreateCameraCapture

OpenCV 3.1

• VideoCapture::open(const String& filename, int apiPreference)
  • IVideoCapture_create?
  • cvCreateFileCaptureWithPreference?
• VideoCapture::open(int index)
  • IVideoCapture_create?
  • cvCreateCameraCapture

OpenCV 3

• IVideoCapture_create?
• VideoCapture_create

OpenCV 2.x

• cvCreateCameraCapture
  • cvCreateCameraCapture_DShow
• cvCreateFileCapture