System and method for eye-blink based assessment of sustained visual attention of a target

US11992316B2 · kind B2 · utility

Assignee

• Tata Consultancy Services Limited · IN

Inventors

• Rahul Dasharath GAVAS · Sherghati, IN
• Mithun Basaralu Sheshachala · Kanchinakote, IN
• Debatri Chatterjee · Sherghati, IN
• Ramesh Ramakrishnan · Mount Prospect, US
• Venkata Subramanian Viraraghavan · Kanchinakote, IN
• Achanna Anil Kumar · Kanchinakote, IN
• Girish Chandra · Kanchinakote, IN

Key dates

• Filing date: Mar 26, 2021
• Grant date: May 28, 2024
• Expiry date: Nov 17, 2042

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B5/113
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

This disclosure relates generally to a method and system for assessment of sustained visual attention of a target. The conventional methods utilize various markers for assessment of attention, however, blink rate variability (BRV) series signal is not explored yet. In an embodiment, the disclosed method utilizes BRV series signal for assessing sustained visual attention of a target. A gaze data of the target is recorded using an eye tracker and a set of uniformly sampled BRV series signal is reconstructed from each of the BRV series. One or more frequency domain features, including pareto frequency, are extracted from the set of uniformly sampled BRV series signal. The values of frequency domain features extracted from the set of BRV series signals are compared with corresponding threshold values to determine visual sustained attention of the target.