Visual Servoing Platform version 3.5.0
tutorial-export-image.cpp
1
2#include <visp3/io/vpImageIo.h>
3#include <visp3/gui/vpDisplayX.h>
4#include <visp3/gui/vpDisplayGTK.h>
5#include <visp3/gui/vpDisplayGDI.h>
6#include <visp3/gui/vpDisplayD3D.h>
7#include <visp3/gui/vpDisplayOpenCV.h>
8
9int main()
10{
11 vpImage<unsigned char> I(240, 320, 255); // Create a black grey level image
12 vpImage<vpRGBa> Ioverlay;
13
14 // Depending on the detected third party libraries, we instantiate here the
15 // first video device which is available
16#if defined(VISP_HAVE_X11)
17 vpDisplay *d = new vpDisplayX;
18#elif defined(VISP_HAVE_GTK)
19 vpDisplay *d = new vpDisplayGTK;
20#elif defined(VISP_HAVE_GDI)
21 vpDisplay *d = new vpDisplayGDI;
22#elif defined(VISP_HAVE_D3D9)
23 vpDisplay *d = new vpDisplayD3D;
24#elif defined(VISP_HAVE_OPENCV)
26#endif
27 // Initialize the display with the image I. Display and image are
28 // now link together.
29#ifdef VISP_HAVE_DISPLAY
30 d->init(I);
31#endif
32 // Set the display background with image I content
34 // Draw a red rectangle in the display overlay (foreground)
35 vpDisplay::displayRectangle(I, 10, 10, 100, 20, vpColor::red, true);
36 // Flush the foreground and background display
38 // Updates the color image with the original loaded image and the overlay
39 vpDisplay::getImage(I, Ioverlay) ;
40 // Write the color image on the disk
41 std::cout << "Save image in overlay.ppm" << std::endl;
42 std::string ofilename("overlay.png");
43 vpImageIo::write(Ioverlay, ofilename) ;
44 // Wait for a click in the display window
45 std::cout << "A click to quit..." << std::endl;
47#ifdef VISP_HAVE_DISPLAY
48 delete d;
49#endif
50}
static const vpColor red
Definition: vpColor.h:217
Display for windows using Direct3D 3rd party. Thus to enable this class Direct3D should be installed....
Definition: vpDisplayD3D.h:107
Display for windows using GDI (available on any windows 32 platform).
Definition: vpDisplayGDI.h:129
The vpDisplayGTK allows to display image using the GTK 3rd party library. Thus to enable this class G...
Definition: vpDisplayGTK.h:135
The vpDisplayOpenCV allows to display image using the OpenCV library. Thus to enable this class OpenC...
Use the X11 console to display images on unix-like OS. Thus to enable this class X11 should be instal...
Definition: vpDisplayX.h:135
void init(vpImage< unsigned char > &I, int win_x=-1, int win_y=-1, const std::string &win_title="")
Class that defines generic functionnalities for display.
Definition: vpDisplay.h:178
static bool getClick(const vpImage< unsigned char > &I, bool blocking=true)
static void display(const vpImage< unsigned char > &I)
static void getImage(const vpImage< unsigned char > &Is, vpImage< vpRGBa > &Id)
Definition: vpDisplay.cpp:144
static void flush(const vpImage< unsigned char > &I)
static void displayRectangle(const vpImage< unsigned char > &I, const vpImagePoint &topLeft, unsigned int width, unsigned int height, const vpColor &color, bool fill=false, unsigned int thickness=1)
static void write(const vpImage< unsigned char > &I, const std::string &filename, int backend=IO_DEFAULT_BACKEND)
Definition: vpImageIo.cpp:293