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diff --git a/ml/dlib/examples/surf_ex.cpp b/ml/dlib/examples/surf_ex.cpp
deleted file mode 100644
index 70fe19008..000000000
--- a/ml/dlib/examples/surf_ex.cpp
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-// The contents of this file are in the public domain. See LICENSE_FOR_EXAMPLE_PROGRAMS.txt
-/*
-
-    This is a simple example illustrating the use of the get_surf_points() function.  It
-    pulls out SURF points from an input image and displays them on the screen as an overlay
-    on the image.
-
-    For a description of the SURF algorithm you should consult the following papers:
-        This is the original paper which introduced the algorithm:
-            SURF: Speeded Up Robust Features
-            By Herbert Bay, Tinne Tuytelaars, and Luc Van Gool
-
-        This paper provides a nice detailed overview of how the algorithm works:
-            Notes on the OpenSURF Library by Christopher Evans
-
-*/
-
-
-
-#include <dlib/image_keypoint/draw_surf_points.h>
-#include <dlib/image_io.h>
-#include <dlib/image_keypoint.h>
-#include <fstream>
-
-
-using namespace std;
-using namespace dlib;
-
-//  ----------------------------------------------------------------------------
-
-int main(int argc, char** argv)
-{
-    try
-    {
-        // make sure the user entered an argument to this program
-        if (argc != 2)
-        {
-            cout << "error, you have to enter a BMP file as an argument to this program" << endl;
-            return 1;
-        }
-
-        // Here we declare an image object that can store rgb_pixels.  Note that in dlib
-        // there is no explicit image object, just a 2D array and various pixel types.  
-        array2d<rgb_pixel> img;
-
-        // Now load the image file into our image.  If something is wrong then load_image()
-        // will throw an exception.  Also, if you linked with libpng and libjpeg then
-        // load_image() can load PNG and JPEG files in addition to BMP files. 
-        load_image(img, argv[1]);
-
-        // Get SURF points from the image.  Note that get_surf_points() has some optional
-        // arguments that allow you to control the number of points you get back.  Here we
-        // simply take the default.
-        std::vector<surf_point> sp = get_surf_points(img);
-        cout << "number of SURF points found: "<< sp.size() << endl;
-
-        if (sp.size() > 0)
-        {
-            // A surf_point object contains a lot of information describing each point.
-            // The most important fields are shown below:
-            cout << "center of first SURF point: "<< sp[0].p.center << endl;
-            cout << "pyramid scale:     " << sp[0].p.scale << endl;
-            cout << "SURF descriptor: \n" << sp[0].des << endl;
-        }
-
-        // Create a window to display the input image and the SURF points.  (Note that
-        // you can zoom into the window by holding CTRL and scrolling the mouse wheel)
-        image_window my_window(img);
-        draw_surf_points(my_window, sp);
-
-        // wait until the user closes the window before we let the program 
-        // terminate.
-        my_window.wait_until_closed();
-    }
-    catch (exception& e)
-    {
-        cout << "exception thrown: " << e.what() << endl;
-    }
-}
-
-//  ----------------------------------------------------------------------------
-