Warthog Systems

2-d motion analysis software for Macintosh computers

To get a copy of Motion Analysis, go to the downloads page

Warthog Motion Analysis is a very simple digitizing and movement analysis program for Macintosh computers with minimum screen resolution of 640 by 480 pixels. It can read QuickTime or AVI-format movies. Motion Analysis digitizes points that are selected by the user on successive frames of a video clip.

Motion Analysis is freeware. However, in the wide world of image analysis and kinematics software, it is a fine example of the old saying that you get what you pay for (and vice versa). For example: Motion Analysis does not have any image recognition algorithms, and therefore cannot automatically 'track' sections of an image from frame to frame. It also has no provisions for compensating for parallax or correcting for other image distortions. However, it does have a number of useful features that help simplify the processing of 2-dimensional movements:

You can digitize up to 5 points per frame, and the program can position the cursor a fixed distance from each selected point in a series of sequential points.
In addition to the 'raw' X,Y coordinates of each point, Motion Analysis calculates and stores the instantaneous velocity from frame to frame, and the net velocity from the initial frame in a digitized event sequence to the current frame. These results are saved in tab-delineated spreadsheet files.
The program allows control over the framing rate, frame advance stepping (frame-by-frame, every other frame, etc.), spatial units (cm, inches, etc.), points digitized per frame, and the segment positioning cues used for multiple points/frame.

Topics:

Starting the program Digitizing page

Controls page Saving digitized data

Information on specific menu functions:

File Menu Edit Menu Digitize Menu Help Menu

OS X compatability: Motion Analysis runs natively with OS X. It also works with OS 8.6 - 9.x (if the 'carbon library' is installed).

No warranty of any kind is offered or implied. Motion Analysis is NOT a commercial product and may not be sold or copied for commercial purposes.

Credits. . . .

Motion Analysis was written in FutureBasic (©Staz Software, Inc.; http://www.stazsoftware.com) by Mark Chappell (a.k.a. 'Warthog Systems', with apologies to Sable Systems and Gilbert Shelton) with facilities provided by the University of California, Riverside.

If you have questions about the program, please contact me at chappell@citrus.ucr.edu .

go to the Warthog Systems page

back to Mark Chappell's page

*Starting the program*	*Digitizing page*
*Controls page*	*Saving digitized data*