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v.presence

v.presence is used predominant to detect presence.


v.presence is used predominant to detect presence. It maintains a slowly adapting internal image that moves at a specified rate toward the pixel values in the input stream. The long exposure provides a reference image against which to compare the current frame. The difference usually represents a new presence in front of the camera. The rate at which the reference image adapts to the current incoming image is defined by a value between 0 and 1. At 0, the reference image is exactly the same as the live image. At 1, the reference image is frozen. Values between 0.99 and 0.9975 are most useful
from the library :
softVNS
Format : External
Environment : jitter / max
commercial
Max 4.x


http://homepage.mac.com/davidrokeby/softVNS.html

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