Subtracts the last frame from the current frame. Calculates the amount of motion occuring within the image.

Inlets & Arguments:

#	Name	Arg	Description
1	image	n/a	Eyes Image, standard operator messages see: eyes messages
2	threshold low	t,lo	Threshold low: If t < pixel < t2 then pixel = value,
3	threshold high	t2,hi	High threshold
4	value	v	Value to assign to pixels within threshold range.

Outlets:

#	Name	Description
1	difference image	Resulting difference image
2	motion	Number of pixels that have changed since the last image. See results out for information on format.

Messages:

Standard messages

Accepts all messages sent to the eyes object. See eyes messages.

Argument messages

Accepts all inlet arguments as messages: t, t2, and v.

Example:

See Also:

threshold, background, cut, <, >, <=, >=, ><, <>, ==, !=