There are 2 blog entries tagged with “reacTIVision.”

This article describes how to use the reacTIVision tracking framework in combination with the InstantPlayer X3D browser. It provides a solution based on reacTIVisions MIDI output, representing each fiducial by a node in the X3D scenegraph. The Fiducial X3D prototype node offers fields for position, angle and state of a …
I have written a V4L2 (video4Linux2) camera engine for reacTIVision under Linux. The engine was developed using a Logitech Quickcam 5000 (046d:08c5) but it should work with any V4L2 compatible camera.
You need a working V4L2 camera. In my case I used the drivers from the linux-uvc project …