TAILIEUCHUNG - A novel fiber Bragg grating system for eye tracking

Eye movement evaluation is vital for diagnosis of various ophthalmological and neurological disorders. The present study proposes a novel, noninvasive, wearable device to acquire the eye movement based on a Fiber Bragg Grating (FBG) Sensor. The proposed Fiber Bragg Grating Eye Tracker (FBGET) can capture the displacement of the eyeball during its movements in the form of strain variations on a cantilever. The muscular displacement generated by the eyeball over the lower eyelid, by its swiveling action while moving the gaze on a target object, is converted into strain variations on a cantilever. The developed FBGET is investigated for dynamic tracking of the eye-gaze movement for various actions of the eye such as fixations, saccades and main sequence. This approach was validated by recording the eye movement using the developed FBGET as well as conventional camera-based eye tracker methodology simultaneously. The experimental results demonstrate the feasibility and the real-time applicability of the proposed FBGET as an eye tracking device. In conclusion, the present study illustrates a novel methodology involving displacement of lower eyelid for eye tracking application along with the employment of FBG sensors to carry out the same. The proposed FBGET can be utilized in both clinical and hospital environment for diagnostic purposes owing to its advantages of wear-ability and ease of implementation making it a point of care device. | Journal of Advanced Research 16 2019 25-34 Contents lists available at ScienceDirect Journal of Advanced Research journal homepage locate jare Original Article A novel fiber Bragg grating system for eye tracking Sharath Umesha Shweta Panta Srivani Padma a b Sumitash Janac Varsha Vasudevane Aditya Murthyc Sundarrajan Asokana d a Department of Instrumentation and Applied Physics Indian Institute of Science Bangalore India b Department of Electrical Communication Engineering Indian Institute of Science Bangalore India c Centre for Nuerosciences Indian Institute of Science Bangalore India d Applied Photonics Initiative Indian Institute of Science Bangalore India e Centre for Biosytems Science and Engineering Indian Institute of Science Bangalore India Check for updates HIGHLIGHTS FBGET is novel non-invasive and easy to mount eye tracking methodology. FBGET can be utilized as a point of care device. FBGs are electrically and chemically inert hence suitable for biomedical sensing. FBGET tracks both eyes simultaneously eliminating time synchronization complexity. FBGET can facilitate diagnosis of ophthalmological neurological disorders. GRAPHICAL ABSTRACT ARTICLE INFO ABSTRACT Article history Received 29 August 2018 Revised 19 December 2018 Accepted 20 December 2018 Available online 31 December 2018 Keywords Fiber Bragg grating sensor Eye tracker Eye muscular movement detection Eye movement evaluation is vital for diagnosis of various ophthalmological and neurological disorders. The present study proposes a novel noninvasive wearable device to acquire the eye movement based on a Fiber Bragg Grating FBG Sensor. The proposed Fiber Bragg Grating Eye Tracker FBGET can capture the displacement of the eyeball during its movements in the form of strain variations on a cantilever. The muscular displacement generated by the eyeball over the lower eyelid by its swiveling action while moving the gaze on a target object is converted into strain variations on a .

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• Fiber Bragg grating sensor
• Eye tracker
• Eye muscular movement detection
• Bragg grating system
• Bragg grating system for eye tracking
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• Optical fibre sensors
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• FBG wavelength shifts
• embedded fiber bragg
• Mathematics
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• natural sciences
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• Wood Plastic
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• Bragg Grating Sensors