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-#!/usr/bin/python
-# The contents of this file are in the public domain. See LICENSE_FOR_EXAMPLE_PROGRAMS.txt
-#
-# This example shows how to use the correlation_tracker from the dlib Python
-# library. This object lets you track the position of an object as it moves
-# from frame to frame in a video sequence. To use it, you give the
-# correlation_tracker the bounding box of the object you want to track in the
-# current video frame. Then it will identify the location of the object in
-# subsequent frames.
-#
-# In this particular example, we are going to run on the
-# video sequence that comes with dlib, which can be found in the
-# examples/video_frames folder. This video shows a juice box sitting on a table
-# and someone is waving the camera around. The task is to track the position of
-# the juice box as the camera moves around.
-#
-#
-# COMPILING/INSTALLING THE DLIB PYTHON INTERFACE
-# You can install dlib using the command:
-# pip install dlib
-#
-# Alternatively, if you want to compile dlib yourself then go into the dlib
-# root folder and run:
-# python setup.py install
-# or
-# python setup.py install --yes USE_AVX_INSTRUCTIONS
-# if you have a CPU that supports AVX instructions, since this makes some
-# things run faster.
-#
-# Compiling dlib should work on any operating system so long as you have
-# CMake installed. On Ubuntu, this can be done easily by running the
-# command:
-# sudo apt-get install cmake
-#
-# Also note that this example requires scikit-image which can be installed
-# via the command:
-# pip install scikit-image
-# Or downloaded from http://scikit-image.org/download.html.
-
-import os
-import glob
-
-import dlib
-from skimage import io
-
-# Path to the video frames
-video_folder = os.path.join("..", "examples", "video_frames")
-
-# Create the correlation tracker - the object needs to be initialized
-# before it can be used
-tracker = dlib.correlation_tracker()
-
-win = dlib.image_window()
-# We will track the frames as we load them off of disk
-for k, f in enumerate(sorted(glob.glob(os.path.join(video_folder, "*.jpg")))):
- print("Processing Frame {}".format(k))
- img = io.imread(f)
-
- # We need to initialize the tracker on the first frame
- if k == 0:
- # Start a track on the juice box. If you look at the first frame you
- # will see that the juice box is contained within the bounding
- # box (74, 67, 112, 153).
- tracker.start_track(img, dlib.rectangle(74, 67, 112, 153))
- else:
- # Else we just attempt to track from the previous frame
- tracker.update(img)
-
- win.clear_overlay()
- win.set_image(img)
- win.add_overlay(tracker.get_position())
- dlib.hit_enter_to_continue()