27DEEP LEARNING PLUS QUICK START GUIDE
OUTDOOR INSTALLATIONS
Please follow the additional criteria below for outdoor camera installations:
1. Install the camera at an appropriate angle for object recognition. This is critical for accurate
object detection outdoors. For example, a camera with f=2.8mm lens installed on a utility
pole at a height of 7.5m should be adjusted at about 50° to match the centre point of
objects 8-8.5m away. Accuracy will decrease as the installation angle decreases.
2. The maximum object recognition distance is obtained when the camera is almost horizontal
(installation angle close to 90°). For example, a camera with a f=3.3mm lens would be able
to detect people up to 55m and vehicles up to 80m.
3. Vehicle detection also follows the recommended installation angle/height range. For
example, refer to the scene below:
Detecting vehicles at greater heights can best be achieved as follows:
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