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vux-doc-eyeswebvvvv

Eyesweb and vvvv interaction

Eyesweb is a software developped by infomus. It is also a node based software, but it more used for data analysis, specially motion tracking.
Eyesweb display capabilities are very limited, so making it interact with our favorite vvvv gives us the best of both worlds :).

Motion processing nodes

Eyesweb has a lot of Motion analysis nodes, here are some of the most interesting:

  • Background substration : Extracts shape, the basis of any analysis.
  • SMI : Calculates the quantity of motion compared to the last image (output as number and image)
  • ExtractMultColors: Same node as freeframe ColorTracker, tracks for specific colors
  • ExtractRegions: Similar as the Contour node, blob tracking.
  • Baricenter: Calculates the barycenter of an image.
  • CentroidsCalc: Extract a person features (head, hands,feet, knees...) from a shape.
  • CalculateHistogram: Calculates an image histogram (returns the percentage of each color level).
  • Contraction,Directness and Stability index: Computes cues from a Centroids extraction.

Communication Nodes

To be able to use the data received from Eyesweb in vvvv, we need to have both programs to be able to communicate.

This is the list of nodes to allow this.

  • OSC : Sends data using OSC protocol (UDP). Easy to use but data types are limited to number and string (so requires lot of patching to send list for example).
  • Midi: sends data as midi (Midi yoke is your friend there :).
  • SentToNetwork: Sends data using eyesweb custom protocol (Check the plugin page to have vvvv receiver nodes). Any datatype can be sent, but the server (vvvv here) needs to be started before the eyesweb patch (as it uses tcp).

To use sendtonetwork nodes, you can use go here to download Eyesweb server nodes: Eyesweb plugin.

by vux

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Shoutbox

~7d ago

auralscapes: By the way, if anyone would like to use any of my tracks or even parts thereof you are welcome. No fee. jerome@auralscapes.com

~7d ago

auralscapes: Thx for the advice. Much appreciated.

~7d ago

tonfilm: @auralscapes you can contact the author @dottore and ask him for the conditions.

~7d ago

auralscapes: A question for the group. I came across an application called Partitura. Is this app commercially available?

~8d ago

auralscapes: Don't have a clue how this all works but it is going to be an interesting journey indeed.

~11d ago

tonfilm: @all #vl now also has pin groups! vl-input-and-output-pin-groups #vvvv #creativecoding #visualprogramming #dotnet

~12d ago

evvvvil: Hey, broski, check my shader "The gamma ray feast" it goes bang and is commented with bad to mediocre jokes. https://www.shadertoy.com/view/wssXWl

~14d ago

hrovac: someone at b-seite on saturday?