Merge branch 'fixes' into 'multiple_camera'

Fixes

See merge request !1

README.md

@@ -4,7 +4,8 @@ From https://github.com/gdiepen/face-recognition / track multiple faces
 
 Project to be shown in Marseille on the 30th of january, 2020, for the Technopolice project.
 
-INSTALLATION:
+## Installation
+
 Need opencv, opencv-contrib, dlib, colour
 
 ```
@@ -13,3 +14,12 @@ pip install opencv-contrib-python
 pip install dlib
 pip install colour
 ```
+
+### On Archlinux and derivatives :
+
+    yay -S python-opencv python-colour python-dlib
+
+
+## Usage
+
+    ./trackmultiplefaces.py

trackmultiplefaces.py

@@ -65,7 +65,7 @@ def count_cameras():
         if temp_camera.isOpened():
             temp_camera.release()
             continue
-        return i
+        yield i
 
 
 class facetracker:
@@ -614,16 +614,16 @@ class facetracker:
         return color
 
 if __name__ == '__main__':
-    for value in count_cameras:
+    for value in count_cameras():
         detectAndTrackMultipleFaces(
-                # Camera number
-                value,
-                # False: Names are directly printed on screen, no new thread
-                start_thread             = False,
-                # Select only names with letters and whitespace. Any other value will select printable.
-                charset                  = "letters",
-                # If True, then rectangle color around people' face will turn red if dangerous
-                draw_person_dangerosity  = True,
-                # Add a warning message if dangerous
-                add_warning_message      = True
-                )
+            # Camera number
+            value,
+            # False: Names are directly printed on screen, no new thread
+            start_thread             = False,
+            # Select only names with letters and whitespace. Any other value will select printable.
+            charset                  = "letters",
+            # If True, then rectangle color around people' face will turn red if dangerous
+            draw_person_dangerosity  = True,
+            # Add a warning message if dangerous
+            add_warning_message      = True
+        )