Method and system for noncontact vision-based 3D cognitive fatigue measuring by using task evoked pupillary response
AssigneesSangmyung University Industry-Academy Cooperation Foundation, Center of Human-Centered Interaction for Coexistence
InventorsMin Cheol Whang, Sang In Park, Myoung Ju Won, Dong Won Lee
Life of this patent
Estimating the term…
Abstract
Provided are a method and system for noncontact vision-based 3D cognitive fatigue measuring. The method comprises: acquiring pupil images of a subject exposed to visual stimuli; extracting a task evoked pupillary response (TEPR) by using the pupil images; detecting dominant peaks from the TEPR; calculating latency of dominant peaks; and determining cognitive fatigue of the subject by comparing a value of the latency to a predetermined reference value.
Claims9
A method of measuring noncontact-vision-based cognitive fatigue, the method comprising;
- acquiring pupil images of a subject exposed to visual stimuli;
- extracting a task evoked pupillary response (TEPR) by using the pupil images;
- detecting dominant peaks from the TEPR;
- calculating latency of the dominant peaks;
- and
- determining cognitive fatigue of the subject by comparing a value of the latency to a predetermined reference value associated with cognitive fatigue.
A system for measuring noncontact-vision-based cognitive fatigue, the system comprising:
- a video camera configured to acquire pupil images of a subject exposed to visual stimuli;
- a processing unit configured to process the pupil images;
- and
- an analyzing unit configured to extract a task evoked pupillary response (TEPR) by using the pupil images, detect dominant peaks from the TEPR, calculate latency of the dominant peaks, and determine the cognitive fatigue by comparing a value of the latency to a predetermined reference value associated with cognitive fatigue.
Dependencies are inferred from the claim text.