TrackXY
Track & log x & y displacement, in realtime, of object in webcam
Track, in realtime, horizontal and vertical displacement of object in webcam. Log timestamp, x and y to comma-separated value (.csv) file importable to spreadsheet.
Uses Lukas-Kanade algorithm and based on lkdemo.cpp in OpenCV, stripped down to track single point in high contrast against a uniform background. Based on the BSD licensed OpenCV, TrackXY also has BSD-style license.
I am a bit embarrassed to be posting this here, because it's such a rudimentary program, but I couldn't find any...