1. Moving The Mouse Pointer Using Eye Gazing
Student: Ibraheem Frieslaar
Supervisor: Mehrdad Ghaziasgar

2. OVERVIEW INTRODUCTION USER INTERFACE SPECIFICATION HIGH LEVEL DESIGN
LOW LEVEL DESIGN
DEMO
REFERENCES
QUESTIONS & ANSWERS

3. INTRODUCTION Eye ball tracker
Using the webcam to determine eye gaze location
Moving the mouse to that location

4. USER INTERFACE SPECIFICATION
Runs in the Background
It’s a Daemon

5. High Level Design
Input
Webcam
Image
Processing
Move Mouse Pointer

6. Low Level Design Input Webcam Image Processing Move Mouse Pointer
Haar Detection
Locate Eyes
Determine left Eye
Locate
Iris
SVM

7. Low Level Design
Input
Webcam
Acquire Image
cvQueryFrame( capture )

8. Low Level Design Haar Detection Haar like features Detects Eyes
cvHaarDetectObjects

9. Low Level Design Locate Eyes Set Haar Detection as Region of Intrest
cvSetImageROI
Determine left Eye
Half the image for left eye
cvSetImageROI/2

10. Low Level Design Locate Iris Hough Circles Determine Darkest Pixels
circles = cvHoughCircles
Display Circle
DarkPixels = DarkPixels + (255-s.val[0])
MaxDarkPixels = DarkPixels
cvCircle

11. Low Level Design Right Eye Eye Redrawn SVM Pixel values saved
Values sent to Support Vector Machine (SVM)
1 1:255 2:255 3:255 4:0 5:0 6:0 7:255 8:255
system("svm-predict.exe Test trainer.model result")
SVM Prediction

12. Low Level Design
Move Mouse Pointer
SetCursorPos(x,y);

13. Demo

14. REFERENCES
OpenCVWiki. lOpenCVWiki. [Online].
Heiko Drewes, "Eye Gaze Tracking for Human Computer Interaction," Ludwig-Maximilians-Universität, Munich, 2010.

15. QUESTIONS AND ANSWERS Thank You!