Isadora Manual v1.3 - TroikaTronix

• brightness: Reports the overall brightness of the frame. Can be useful when
determining how close the objects are to the camera.
• blob 1 – blob 16: When connected to the Blob Decoder actor, reports the
various characteristics measured for each blob.
Filter
Smoothes a jittery stream of values.
NOTE: This actor has been superceded by the Smoother actor. If you need to
smooth out a stream of numbers, the Smother actor is now the recommended
choice.
Sometimes you have a source of values where the numbers jump up and down. This
actor uses a weighted averaging of the past values to provide a smoother version of
the input value stream.
The key settings to adjust when attempting to smooth your values are the stages and
decay input properties. The number of stages determines how many of the previous
numbers the filter remembers. The decay determines how much influence those
remembered numbers have on the current value. For instance, decay is set to one
second, numbers that are 1/2 second old would have half the influence of a number
that just arrived. Numbers older than one second would have no influence at all.
The frequency output determines how often a new output value is calculated.
Higher values here produce a smoother output.
Input Properties
• value: The stream of incoming values
• frequency: The frequency with which new values will appear at the output
• stages: How many of the previous values will be remembered by the filter as
it calculates the new value
• decay: How long a value’s influence to decay to 0.
• scaling: Multiplies the output value by this number to provide a better range
of output values.
Output Properties
• output: The smoothed values.
Isadora Manual
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