View Full Version : Object Tracking

09-13-2008, 02:26 AM
How would I be able to track a moving object at distances of up to 50 ft with a camera on servos, being able to pan and tilt. Would the Boe-Bot CMUCam setup work or can I use some micro controllers with a CMUCam3 or other cam/motion sensor? The Boe-Bot CMUCam says it has the ability to control one servo, I would need two for pan and tilt. Would I be able to utilize another micro controller to accomplish the tilt? Please help!

Post Edited (ERY) : 9/12/2008 7:34:58 PM GMT

09-13-2008, 08:02 AM
How big an object and how fast is it moving? The cam and boe may not be your best choice but we need more info.

- Stephen

Chris Savage
09-13-2008, 12:47 PM
Are you referring to something connected to a BASIC Stamp?

Chris Savage
Parallax Engineering

09-15-2008, 06:48 PM
Human sized objects traveling at speeds from walking to running.
Chris said...
Are you referring to something connected to a BASIC Stamp?
Well I was thinking of using multiple basic stamps for the whole setup, unless there is something more suited for the task.

09-15-2008, 07:47 PM
Presently, I am using 3 ultrasonic devices from www.senscomp.com (http://www.senscomp.com) to track myself with a following golf caddy.и This is the Mini S device, and there is 3 range selections to choose from.и I am using the .5 to 20 foot model.и However, they do have a 1 to 40 foot model.и

I am using 3и of the Mini S models to track me in a center, left, right movement.и To track up and down as well, I should think you would need 2 more devices, making a total of 5 devices arranged in a ---->ии (a "*" и=и Mini S sensor)ии

иииииииииииииииииииииииииииииииииииииииииииииии *
ииииииииииииииииииииииииииииииииииииииииииии * * *

Angle the outside Mini S's to point up and down and left and right, leaving the center to point straight ahead.и A little overlap is ok, as you can write the code to interpet when there is a detection on the center, and to ignore the outsides sensors.и Only when one of the outside sensors has a detection, will the pan or tilt respond.ииIt does take some creative code writing to get the sensors and the pan/tilt motors to work together, but it can be down.


09-15-2008, 11:01 PM
If you want to use a camera, you'll need to wear the same color every time and make sure the background contrasts. Think of yourself as a green screen: to be effective, the green screen has to be constant and unchanging. Using ultrasonic or some other distance detection would be better then tracking with a camera.