Mon Apr 07 17:19:25 UTC 2025: ## IIT Madras Develops Real-Time Indoor Mapping Technology for First Responders

**Chennai, April 7, 2025** – Researchers at the Indian Institute of Technology Madras (IIT-M) have developed a groundbreaking real-time indoor mapping technology, UbiqMap, designed to revolutionize public safety and rescue operations. This wireless imaging technology utilizes radio tomographic imaging (RTI) and wearable transceivers to create precise, detailed maps of indoor environments regardless of lighting or environmental conditions.

Unlike traditional RTI systems that rely on fixed transceivers, UbiqMap employs wearable devices that automatically determine position and continuously update the map as team members move through a building. This eliminates the need for pre-existing infrastructure and offers a portable, robust solution for first responders.

Led by Assistant Professor Ayon Chakraborty of the Computer Science and Engineering department, the research team has filed an Indian patent for UbiqMap, which has been published in the peer-reviewed journal *Transactions on Mobile Computing*. The technology has been validated through experiments within IIT-M housing units, and a wearable prototype is currently under development for real-world field trials.

“Our technology offers first responders a robust and portable tool to image indoor environments without dependence on visual line of sight or extensive computational resources,” said Mr. Chakraborty. He added that UbiqMap is being integrated with visual modalities using sensor fusion, working alongside existing tools like cameras for a comprehensive solution.

UbiqMap surpasses existing camera-based systems, which are ineffective in poorly lit or cluttered environments and require significant computational infrastructure. By mapping material properties, such as distinguishing drywall from concrete, UbiqMap helps first responders plan safer and more efficient evacuation or rescue routes. The technology is also seen as having the potential for applications in smart cities and autonomous systems.

Read More