User Comments on Tracker Video Analysis: Bouncing Ball (3)

classification should be a Motion in One Dimension instead :)

Author: lookang
Posted: April 18, 2012 at 10:36PM

accessible from http://www.compadre.org/osp/document/ServeFile.cfm?ID=11705&DocID=2583&TrackerSet=1 within tracker under open the OSP Digital Library.
Awesome feature

but
classification should be a Motion in One Dimension instead :)

reference:
http://weelookang.blogspot.com/2012/04/ict-mentor-program-sharing-with-ast.html

thanks for making the changes!

Author: lookang
Posted: July 5, 2012 at 9:50PM

thanks for making the changes!

added kinematics model for bouncing ball

Author: lookang
Posted: November 26, 2012 at 10:55PM

in case you are wondering how to create a kinematic model for this case,

choose kinematics model
add into y
    y = if (t < 0.68, -4.781*t^2+0.124*t+0.001, if(t < 1.48,-5.117*t^2+10.989*t-7.147,if(t < 2.04,-4.855*t^2+17.059*t-16.669,if(t < 2.44,-4.886*t^2+21.867*t-26.337,if(t < 2.78,-4.174*t^2+21.682*t-30.138,0)))))

all the coefficients of this model are read off from the data analysis coefficients from parabola fit
y = a*t^2+b*t+c

enjoy!
http://weelookang.blogspot.sg/2012/11/tracker-modeling-in-bouncing-ball.html
the source trk edited with the new model can be download here
http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=2620.0