MUMBAI, India, May 29 -- Intellectual Property India has published a patent application (202631029215 A) filed by Narula Institute Of Technology, Kolkata, West Bengal, on March 11, for 'indoor navigational assistance system utilizing visual landmark association and auditory mapping for the visually impaired.'
Inventor(s) include Mr. Diptayan Paul; Ms. Suseta Datta; Ms. Subhasree Bhattacharjee; and Ms. Debrupa Pal.
The application for the patent was published on May 29, under issue no. 22/2026.
According to the abstract released by the Intellectual Property India: "A low-cost wearable system and method (VLAAM) for visually impaired individuals facilitates independent indoor navigation without reliance on GPS or external infrastructure. The system utilizes a wearable camera and local processing unit to recognize fixed visual landmarks during a user-defined mapping phase. These landmarks are stored as unique feature vectors with associated audio tags. During navigation, the system identifies these landmarks in real-time, triangulates the user's position, and generates contextual, spatial auditory cues via a bone conduction headset. The invention operates completely independently of Wi-Fi or cellular networks and utilizes only non-visual modalities for input and feedback, ensuring high reliability and accessibility in diverse indoor environments."
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