» vux-doc-eyeswebvvvv
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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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~4h ago

velcrome: @SFE_Engineering seems cool! https://www.sparkfun.com/news/2319

~9h ago

~13h ago

joreg: what's new in vvvv_50beta35.2 https://vimeo.com/205310326 #vvvv #vl

~2d ago

guest: whats going on under the hood when you sort.. https://www.toptal.com/developers/sorting-algorithms

~3d ago

id144: AIR OpenCall: Artists and researchers from DE, working with the issues connected with digital culture. http://www.kair.sk/open-call-for-german-artists-2/

~3d ago

velcrome: @mrboni check noodles pack

~4d ago

catweasel: bezier match not doing it for you? Or do you need GPU specifically?

~4d ago

mrboni: I meant a gpu version of B-Spline (3D Surface). I only found an approach using bicubic filtering on a texture (dx9 gpuparticles)