And we are talking about a special mat / carpet that can accurately estimate the movements and position of the user’s body without the use of cameras – according to the authors, the system is ideal for training, monitoring falls, tracking for VR or gaming. The prototype mat measures 3.3 m2 and is equipped with over 9,000 sensors made of a pressure-sensitive layer and conductive threads. This means that if the weight is distributed over different parts of the mat, different electrical signals will be sent, based on the pressure force, telling you where and what pressure has been applied.
The system was originally trained on a synchronized pressure on the mat and a corresponding video where people performed various activities such as walking, push-ups, squats, yoga poses, sitting, lying, rolling, toe-standing, etc. Then a pressure map of these actions was assigned to virtual models of people performing them, allowing AI to estimate the user’s body position based solely on pressure. Even upper body movements can be effectively assessed and, for example, the system can tell if a person is leaning to the right or to the left based on which foot is shifting their weight to. Therefore, the mat can tell if our trip looks appropriate and without the help of cameras – the team claims that its solution is 97% effective in identifying specific actions and can predict the user’s position with an accuracy of 10 cm.
– You can imagine using such a mat for training purposes. Based only on pressure, it is able to recognize activity, count the number of repetitions or calculate calories burned, explains co-author of the solution, Yunzhu Li. Other possible applications include monitoring the elderly in the context of falls, assisting in rehabilitation or tracking player movements in virtual reality or video games.
Especially that the mat can be much more convenient than putting on all the sensors, wiring, mounting cameras and so on. The more so because, according to MIT, the mat is easy to scale and costs relatively little, because they built the prototype for less than $ 100. Scientists are now trying to go one step further and find a way to collect more information, such as a user’s weight and height, and to make the mat suitable for use by multiple people at the same time.
Source: GeekWeek.pl – Wiadomości by www.geekweek.pl.
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