Change keys to left, right for linux users

keras_retinanet/bin/debug.py

@@ -213,9 +213,9 @@ def run(generator, args, anchor_params):
         # press right for next image and left for previous (linux)
         # if you run macOS, it might be convenient using "n" and "m" key (key == 110 and key == 109)
 
-        if key == 109:
+        if key == 83:
             i = (i + 1) % generator.size()
-        if key == 110:
+        if key == 81:
             i -= 1
             if i < 0: i = generator.size() - 1
         # press q or Esc to quit