APS Excellence in Physics Education Award
November 2019

Education Prize Logo
Science SPORE Prize
November 2011

NSF Logo
The Open Source Physics Project is supported by NSF DUE-0442581.

Tracking Distance from the Camera post and replies

Return to the Tracking Distance from the Camera thread
Login to post to this thread

Is Tracker able to track individual distance from the camera? - November 18 at 6:00:PM
Tyler Lue
1 Posts

Hi,

I was wondering if Tracker was able to track an individual's distance from the camera. All of the videos I am seeing online are in 2D space and my project is aiming to analyze individuals in 3D space. More specifically, we are trying to estimate the distance of an individual from the camera. We have calibration videos where we have a 20m rope that extends from the camera going away from the camera. I have attached a photo of the calibration video I am trying to use. In the other videos, it will be the same location but instead with animals in the frame whose distances we are aiming to measure. The red flags on the rope indicate 5m distances from the camera. Using a calibration stick on the rope does not yield accurate measurements as it says the first flag is 15m away (y=~15), which I presume is because Tracker is only measuring in 2 dimensions.

Please let me know if measuring distance from the camera is something Tracker can achieve and if so, how I would go about this.

Thanks,
Tyler

Attached File: Calibration_54.png


OSP Projects:
Open Source Physics - EJS Modeling
Tracker
Physlet Physics
Physlet Quantum Physics
STP Book