The 'security_cam.py' file is a generic 'live-object-detection' script and can be modified very easily to detect a total of 20 different objects.

If we look at line 119:

# "Class of interest" - Display detections only if they match this class ID
CLASS_PERSON         = 15

To detect dogs, just change this to:

# "Class of interest" - Display detections only if they match this class ID
CLASS_DOG         = 12

Also, line 200 needs to be changed as well:

        # Filter a specific class/category
        if( output_dict.get( 'detection_classes_' + str(i) ) == CLASS_PERSON ):

Although the person class worked really well and was quite impressive, the dog class was a little bit underwhelming and not nearly as good as some of the other models I've tested. Nonetheless, here's the full list of classes available with this model:

1. Aeroplane
2. Bycycle
3. Bird
4. Boat
5. Bottle
6. Bus
7. Car
8. Cat
9. Chair
10. Cow
11. Diningtable
12. Dog
13. Horse
14. Motorbike
15. Person
16. Pottedplant
17. Sheep
18. Sofa
19. Train
20. TVmonitor