Driver’s Sleepiness
Detection System
Idit Gershoni
Introduction to Computational and Biological Vision
Fall 2007
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driver drowsiness detection, Assignments of Digital Image Processing
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Driver’s Sleepiness
Detection System
Idit Gershoni
Introduction to Computational and Biological Vision
Fall 2007
From Arizona Dept of Public
Safety campaign:
- Time of occurrence of crashes in drivers at ages 26 to 45
in which the crashes were attributed by the police to the
driver being asleep (but in which alcohol was not judged to
be involved).
- (^) The X axis is the time of day and the Y axis is the number
of crashes.
Motivation (2)
- (^) Accidents study in the U.S (1990-92):
- (^) Simulate sleepiness detection system
using image processing methods.
Project Goal
The (ideal) idea:
A video camera placed inside the car is
continuously filming the driver’s face
during the ride.
A detection system analyses the movie
frame by frame and determines whether
the driver’s eyes are open or shut.
If the eyes are shut for more than 1/4 a
second (longer than a normal blink
period) then the systems beeps to alert
the driver.
In Practice
- (^) The system is only a simulation of such
detection system, and doesn’t perform real-
time detection & analysis.
- (^) However, it does work on a given video file
with a given set of parameters.
Implementation – Step by Step (1)
- (^) The movie is extracted to frames:
30 frames
per second
- (^) Apply edge detector on each frame:
The Sobel edge detector
did the work
Implementation – Step by Step (2)
- (^) Perform Circular Hough transform on each
frame in order to detect the irises:
Implementation – Step by Step (4)
- (^) If irises not found – make a ‘beep’ sound
after not finding the irises in 8 consecutive
frames.
Implementation – Step by Step (5)
Future Work
Improving the algorithm:
Study the location of the eyes in the first
image, and create a search area around
the eyes for the following frames.
Performing Hough transform with a
range of possible radiuses.
Make the system work in real-time
environment.
Questions?