You can track any bright object in real time !
This PC/Mac program tracks the brightest object that it sees. With it you can :
- See velocity (in blue) and acceleration(in red) of the object being tracked live
- Save the x,y positons as a .csv file
The tracking works best at about 25 frames a second. It needs to have a bright object with good contrast. Our tracking is based on differences in brightness.
Installing Live Tracker in PC
Installing Live Tracker in Mac
More info you have issues installing
Plain ping-pong balls works well. The Live Tracker tracks the brightest object. You can light the ping pong ball if you need to but it is not necessary. If you decide to use light, make sure that it is diffused light but not direct light as it has glare. You can also use a mini torch or you can attach a bicycle light with Velcro. Make sure that you insert some tissue paper inside it to defuse the light. You can also track your Phone if the screen is lit. You can use app such as Screen Light for Android or Flash Light for Free for Iphones or our own web page that will display a yellow spot.
Live tracking works within limited speed range. It needs a stead background (without movement ). Avoid direct light and glare. The tracking program works based on relative contrast ,hence the contrast between the tracking object and the other objects need to be high. For this reason do not use bright backgrounds. You will see what is being tracked as white areas in the black background. You can adjust the cut off level to eliminate any background items. If too much of the background is picked up, try offing or reducing the room light.
Camera SetupWe recommend cheap Web cams (with manual focus) with a 50Mpixel sensor. The Live tracker senses the position of the object by using a blurring technique - which slows it down. If you have a good web cam with auto-focus you have to use the blur function in the program. If you have a manual focus webcam you can blur it by changing the focus of the lenses - this works faster, as it removes the programmatic bluring of the images. Also best to mount the camera on a mic stand (instead of camera stand), because mic stand has better reach and can point the camera to the floor without causing obstruction.
Since backgrounds are hard to control a dark table tops or the floor with a dark cloth or paper would work well.