System and method for validating honest test taking
AssigneeGleim Internet, Inc.
InventorsGarrett William Gleim, Samuel Rene Caldwell, James Mentz, Shujian Yu
Life of this patent
Estimating the term…
Abstract
A method and system is disclosed for validating honesty of a student taking an online test. A camera is used to detect and monitor the test taker's eye movements and eye gaze positions during the taking of the test to ensure the test taker is looking only at the computer display showing the questions and answer choices to the test taker. A microphone is incorporated into, placed on, or in the vicinity of the computer display and the system compares audio received to recorded voice of the test taker to detect another voice. Other voices and eye movement beyond the display screen may be flagged as indicative of dishonest test taking.
Claims7
A computer implemented method of calibrating a binocular eye gaze comprising:
- obtaining, via a camera communicating with a processor an image of a person looking at a computer display, the image including both eyes of the person;
- determining, via the processor analyzing the image, a first eye feature vector for a first of the person's eyes wherein the first eye feature vector includes a distance between an iris center and an inner corner of the first eye;
- determining, via the processor analyzing the image, a second eye feature vector for the second of the test taker's eyes, wherein the second eye feature vector includes a distance between an iris center and an inner corner of the second eye;
- determining, via the processor utilizing a mapping function relating both of the eye feature vectors to coordinates of the computer display, a binocular eye gaze for the person corresponding to the person viewing a boundary of the computer display;
- and
- calibrating the person's binocular eye gaze utilizing both eye feature vectors, utilizing an equation:
- T
- left
- ,
- T
- right
- =
- argmin
- T
- L
- ,
- T
- R
-
- ∑
- i
- =
- 1
- N
-
-
-
- L
- i
- -
- T
- left
-
- g
- i
- left
-
- 2
- 2
- +
-
- L
- i
- -
- T
- right
-
- g
- i
- right
-
- 2
- 2
- +
- 1
- 2
-
-
- g
- i
- right
- -
- T
- right
- -
- 1
-
- T
- left
-
- g
- i
- left
-
- 2
- 2
- +
- 1
- 2
-
-
- g
- i
- left
- -
- T
- left
- -
- 1
-
- T
- right
-
- g
- i
- right
-
- 2
- 2
- where “left” and “right” represent left eye and right eye, respectively, where L=[Sx,Sy,0,0]H, g=[x,y,xy,1]H, where N>=4;
- and where H denotes a transpose operator in linear algebra, Sx, Sy are screen position coordinates and x, y are eye image feature coordinates.
Dependencies are inferred from the claim text.