FrameGrabber¶
- class FrameGrabber¶
Bases:
pybind11_object
Base class for all video devices. It is designed to provide a front end to video sources.
This class should provide a virtual function that allows the acquisition of an image.
The example below shows how to use this class.
#include <visp3/core/vpConfig.h> #include <visp3/core/vpImage.h> #include <visp3/io/vpImageIo.h> #include <visp3/sensor/vp1394TwoGrabber.h> #include <visp3/sensor/vpV4l2Grabber.h> int main() { #if defined(VISP_HAVE_V4L2) || defined(VISP_HAVE_DC1394) vpImage<unsigned char> I; vpFrameGrabber *g; // Generic framegrabber #if defined( VISP_HAVE_DC1394 ) vp1394TwoGrabber *g_1394_2 = new vp1394TwoGrabber; // specific settings for firewire grabber based on libdc1394-2.x version g_1394_2->setVideoMode(vp1394TwoGrabber::vpVIDEO_MODE_320x240_YUV422); g_1394_2->setFramerate(vp1394TwoGrabber::vpFRAMERATE_30); g = g_1394_2; #elif defined( VISP_HAVE_V4L2 ) vpV4l2Grabber *g_v4l2 = new vpV4l2Grabber; // specific settings for Video For Linux Two grabber g_v4l2->setInput(2); // Input 2 on the board g_v4l2->setFramerate(vpV4l2Grabber::framerate_50fps); // 50 fps g_v4l2->setWidth(384); // Acquired images are 768 width g_v4l2->setHeight(288); // Acquired images are 576 height g_v4l2->setNBuffers(3); // 3 ring buffers to ensure real-time acquisition g = g_v4l2; #endif g->open(I); // Open the framegrabber g->acquire(I); // Acquire an image vpImageIo::write(I, "image.pgm"); // Write image on the disk #endif }
Methods
Return the number of rows in the image.
Return the number of columns in the image.
Inherited Methods
Operators
__doc__
__module__
Attributes
__annotations__
init
- __init__(*args, **kwargs)¶