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AI technique to sense posture through walls, help monitor Parkinson's

IANS  |  New York 

Scientists at the have developed a novel technique that uses (AI) to teach to sense people's postures and movement, even from the other side of a wall, and could be used to monitor like and (MS).

For the system named "RF-Pose," the researchers use a to analyse radio signals that bounce off people's bodies, and can then create a dynamic stick figure that walks, stops, sits and moves its limbs as the person performs those actions.

The system could also help elderly people live more independently, while providing the added security of monitoring for falls, and changes in activity patterns -- associated with Parkinson's, the researchers said.

"We've seen that monitoring patients' walking speed and ability to do basic activities on their own gives a window into their lives that they didn't have before, which could be meaningful for a whole range of diseases," said Dina Katabi,

The results will be presented at the forthcoming Conference on Computer Vision and Pattern Recognition (CVPR) in Salt Lake City,

For the study, the team collected examples using both their and a camera. They gathered thousands of images of people doing activities like walking, talking, sitting, opening doors and waiting for elevators.

They then used these images from the camera to extract the stick figures, which they showed to the along with the corresponding radio signal. This combination of examples enabled the system to learn the association between the radio signal and the stick figures of the people in the scene.

Post-training, RF-Pose was able to estimate a person's posture and movements using only the that bounce off people's bodies.

Besides sensing movement, the authors also showed that they could use to accurately identify somebody 83 per cent of the time out of a line-up of 100 individuals.

"By using this combination of visual data and AI to see through walls, we can enable better scene understanding and smarter environments to live safer, more productive lives," the researchers said.



(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)

First Published: Tue, June 12 2018. 16:18 IST