1. Eye Tracking Project Project Supervisor: Ido Cohen By: Gilad Ambar
Eli Yafe
Winter 2009 (Tasha)
Project B

2. Background Open CV and our system
The system is built from IR camera and 3 LEDs
Was designed by ELBIT for eye tracking

3. OPEN CV
OpenCV is a computer vision library originally developed by Intel. (open source)
Main purpose real-time image processing
Using imaging filter
Graphic structures

4. The Problem What are you looking at right now? Is it in real time?
Why not matlab?

5. Our algorithm in OPEN CV
Algorithms
Input
Output
Main Algorithm.
Calculating LOS vector
Calibrating by off-set vector
Current frame
LOS vector on screen
Calibration Vector
Find LEDs and their center of mass
Find Pupil Center
Pre-calculations and filtering Getting all the blobs*
Hough transform algorithm per blob
RUNS PARALLEL
Select the best ellipse and it’s center
*Blob- Binary large object

6. An output example
LOS vector
LEDs

7. The Product Integrated platform to calculate LOS vector
Input – stream of images
Output – stream of vectors (x,y,z)
Parallel work for maximum speed
Using designated hardware to speed up the Hough transform
Using appointed memory per images for quick use of filtering

8. The next step
GIDEL

9. The key phrase - Running parallel !
Main program
Each blob

10. Timeline 20/12/09 – Displaying arithmetic operations required.
3/1/10 – Block schematic (Highest resolution. Resources requirements.
10/1/10 – implemented code in fixed point.
11/1/10 – Begin implementation of Hough Transform in VHDL.
12/1/10 – 2/3/10 – TBD.
2/3/10 – Mid project presentation