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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

anonymous user login

Shoutbox

~14h ago

drupal_admin: hello. maintenance reboot at 1am. save your work. back in a few minutes

~18h ago

fibo: lol now AWS Lambda supports C# ... does it mean we will see vvvv cloud version?

~1d ago

joreg: @pdubost great, i'd love to see this in our gallery 24

~2d ago

skyliner: @pdubost: vvvvery good!

~2d ago

gerrit: Any recommendations for interesting / exciting booths at IAA? Any good media installations? Somebody made something with vvvv? Thx

~2d ago

microdee: @matka: nope because the SD card got full and we never received an empty one :(

~2d ago

matka: Do we have recordings of the second part of PBR Rendering workshop at NODE17?

~4d ago

pdubost: latest personal project thanks devs and @mrvux for Box2d :) https://vimeo.com/233756367

~5d ago

fibo: Patcher Kucha in Milan, next 14th november from 19 to 22 sta favvvva!