Added notes about installing skimage.

python_examples/face_detector.py

@@ -28,6 +28,11 @@
 #   system so long as you have CMake and boost-python installed.
 #   On Ubuntu, this can be done easily by running the command:
 #       sudo apt-get install libboost-python-dev cmake
+#
+#   Also note that this example requires scikit-image which can be installed
+#   via the command:
+#       pip install -U scikit-image
+#   Or downloaded from http://scikit-image.org/download.html. 
 
 import sys
 

python_examples/face_landmark_detection.py

@@ -28,6 +28,12 @@
 #   system so long as you have CMake and boost-python installed.
 #   On Ubuntu, this can be done easily by running the command:
 #       sudo apt-get install libboost-python-dev cmake
+#
+#   Also note that this example requires scikit-image which can be installed
+#   via the command:
+#       pip install -U scikit-image
+#   Or downloaded from http://scikit-image.org/download.html. 
+
 import sys
 import os
 import dlib

python_examples/find_candidate_object_locations.py

@@ -12,6 +12,12 @@
 # the false alarms.  Since find_candidate_object_locations() will only generate
 # a few thousand rectangles it is much faster than scanning all possible
 # rectangles inside an image.
+#
+#   Also note that this example requires scikit-image which can be installed
+#   via the command:
+#       pip install -U scikit-image
+#   Or downloaded from http://scikit-image.org/download.html. 
+
 
 
 import dlib

python_examples/train_object_detector.py

@@ -15,6 +15,12 @@
 #   system so long as you have CMake and boost-python installed.
 #   On Ubuntu, this can be done easily by running the command:
 #       sudo apt-get install libboost-python-dev cmake
+#
+#   Also note that this example requires scikit-image which can be installed
+#   via the command:
+#       pip install -U scikit-image
+#   Or downloaded from http://scikit-image.org/download.html. 
+
 import os
 import sys
 import glob

python_examples/train_shape_predictor.py

@@ -24,6 +24,12 @@
 #   system so long as you have CMake and boost-python installed.
 #   On Ubuntu, this can be done easily by running the command:
 #       sudo apt-get install libboost-python-dev cmake
+#
+#   Also note that this example requires scikit-image which can be installed
+#   via the command:
+#       pip install -U scikit-image
+#   Or downloaded from http://scikit-image.org/download.html. 
+
 import os
 import sys
 import glob