diff --git a/sensor/sample-vpOpenCVGrabber-2.cpp b/sensor/sample-vpOpenCVGrabber-2.cpp
deleted file mode 100644
index d848a84..0000000
--- a/sensor/sample-vpOpenCVGrabber-2.cpp
+++ /dev/null
@@ -1,59 +0,0 @@
-#include <iostream>
-
-#include <visp3/core/vpConfig.h>
-
-#if defined(VISP_HAVE_OPENCV) && (VISP_HAVE_OPENCV_VERSION < 0x030000)
-
-#include <visp3/core/vpImage.h>
-#include <visp3/core/vpImageConvert.h>
-#include <visp3/gui/vpDisplayOpenCV.h>
-#include <visp3/sensor/vpOpenCVGrabber.h>
-
-
-// usage: binary <device name>
-// device name: 0 is the default to dial with the first camera,
-//              1 to dial with a second camera attached to the computer
-int main(int argc, char** argv)
-{
-  int device = 0;
-  if (argc > 1)
-    device = atoi(argv[1]);
-
-  std::cout << "Use device: " << device << std::endl;
-  cv::VideoCapture cap(device); // open the default camera
-  if(!cap.isOpened())  // check if we succeeded
-    return -1;
-  cv::Mat frame;
-  cap >> frame; // get a new frame from camera
-
-  IplImage iplimage = frame;
-  std::cout << "Image size: " << iplimage.width << " "
-      << iplimage.height << std::endl;
-
-  //vpImage<vpRGBa> I; // for color images
-  vpImage<unsigned char> I; // for gray images
-  vpImageConvert::convert(&iplimage, I);
-  vpDisplayOpenCV d(I);
-
-  for(;;) {
-    cap >> frame; // get a new frame from camera
-    iplimage = frame;
-
-    // Convert the image in ViSP format and display it
-    vpImageConvert::convert(&iplimage, I);
-    vpDisplay::display(I);
-    vpDisplay::flush(I);
-    if (vpDisplay::getClick(I, false)) // a click to exit
-      break;
-  }
-  // the camera will be deinitialized automatically in VideoCapture destructor
-  return 0;
-}
-
-#else
-int main()
-{
-  std::cout << "OpenCV is not available..." << std::endl;
-}
-
-#endif
diff --git a/sensor/sample-vpOpenCVGrabber.cpp b/sensor/sample-vpOpenCVGrabber.cpp
deleted file mode 100644
index bf0fc8f..0000000
--- a/sensor/sample-vpOpenCVGrabber.cpp
+++ /dev/null
@@ -1,15 +0,0 @@
-#include <visp3/core/vpImage.h>
-#include <visp3/io/vpImageIo.h>
-#include <visp3/sensor/vpOpenCVGrabber.h>
-
-int main()
-{
-#if defined(VISP_HAVE_OPENCV) && (VISP_HAVE_OPENCV_VERSION < 0x020408)
-  vpImage<unsigned char> I; // Create a gray level image container
-  vpOpenCVGrabber g;        // Create a grabber based on OpenCV third party lib
-
-  g.open(I);                           // Open the framegrabber
-  g.acquire(I);                        // Acquire an image
-  vpImageIo::writePGM(I, "image.pgm"); // Write image on the disk
-#endif
-}
diff --git a/vision/sample-vpKeyPointSurf-2.cpp b/vision/sample-vpKeyPointSurf-2.cpp
deleted file mode 100644
index 891ff29..0000000
--- a/vision/sample-vpKeyPointSurf-2.cpp
+++ /dev/null
@@ -1,47 +0,0 @@
-#include <visp3/core/vpImage.h>
-#include <visp3/core/vpDisplay.h>
-#include <visp3/vision/vpKeyPointSurf.h>
-
-int main()
-{
-#if defined (VISP_HAVE_OPENCV_NONFREE) && (VISP_HAVE_OPENCV_VERSION < 0x030000)
-  vpImage<unsigned char> Ireference;
-  vpImage<unsigned char> Icurrent;
-  vpKeyPointSurf surf;
-
-  //First grab the reference image Irefrence
-
-  //Select a part of the image by clincking on two points which define a rectangle
-  vpImagePoint corners[2];
-  for (int i=0 ; i < 2 ; i++)
-  {
-    vpDisplay::getClick(Ireference, corners[i]);
-  }
-
-  //Build the reference SURF points.
-  int nbrRef;
-  unsigned int height, width;
-  height = (unsigned int)(corners[1].get_i() - corners[0].get_i());
-  width = (unsigned int)(corners[1].get_j() - corners[0].get_j());
-  nbrRef = surf.buildReference(Ireference, corners[0], height, width);
-
-  //Then grab another image which represents the current image Icurrent
-
-  //Select a part of the image by clincking on two points which define a rectangle
-  for (int i=0 ; i < 2 ; i++)
-  {
-    vpDisplay::getClick(Icurrent, corners[i]);
-  }
-
-  //Match points between the reference points and the SURF points computed in the current image.
-  int nbrMatched;
-  height = (unsigned int)(corners[1].get_i() - corners[0].get_i());
-  width = (unsigned int)(corners[1].get_j() - corners[0].get_j());
-  nbrMatched = surf.matchPoint(Icurrent, corners[0], height, width);
-
-  //Display the matched points
-  surf.display(Ireference, Icurrent);
-
-  return(0);
-#endif
-}
diff --git a/vision/sample-vpKeyPointSurf.cpp b/vision/sample-vpKeyPointSurf.cpp
deleted file mode 100644
index 035e729..0000000
--- a/vision/sample-vpKeyPointSurf.cpp
+++ /dev/null
@@ -1,27 +0,0 @@
-#include <visp3/core/vpImage.h>
-#include <visp3/vision/vpKeyPointSurf.h>
-
-int main()
-{
-#if defined(VISP_HAVE_OPENCV_NONFREE) && (VISP_HAVE_OPENCV_VERSION < 0x030000)
-  vpImage<unsigned char> Irefrence;
-  vpImage<unsigned char> Icurrent;
-  vpKeyPointSurf surf;
-
-  // First grab the reference image Irefrence
-
-  // Build the reference SURF points.
-  surf.buildReference(Irefrence);
-
-  // Then grab another image which represents the current image Icurrent
-
-  // Match points between the reference points and the SURF points computed in the current image.
-  surf.matchPoint(Icurrent);
-
-  // Display the matched points
-  surf.display(Irefrence, Icurrent);
-
-  return (0);
-#endif
-}
-