SecuritySpy’s motion detection algorithm employs many techniques in order to accurately detect real motion events while minimising the rate of false-positive detections. But besides an effective algorithm, there are many choices about the setup and configuration of your video surveillance system that will help achieve reliable motion detection – these are outlined below.
1. Camera Angle
How you position and point the camera, as well as the focal length of the lens (how wide-angle it is) makes a big difference to the effectiveness of motion detection. The key points to consider are as follows:
- The activity you want to capture should be relatively large in the frame. Don’t use a camera with a very wide-angle lens, as this will make objects and people appear very small – too small to trigger motion detection or make out any important features such as faces.
- Point the camera downwards and don’t include any sky in the frame. At certain times of the day the sun may glare into the camera, which would impair its ability to render the scene with good enough definition, and may even damage its sensor.
- Include just the area you want to capture in the frame; don’t include any irrelevant areas as this simply wastes the resolution of your camera.
Here is an example of a bad camera angle for motion detection: