Scientists at Cornell University have developed a technology called “PoseSonic” that combines micro sonar and artificial intelligence to create accurate echo profile images of the wearer. This innovation could lead to more privacy-conscious and cost-effective smart glasses in the future.
Smart glasses have the potential to revolutionize the way we interact with technology, but concerns about privacy and high costs have hindered their widespread adoption. However, a recent study conducted by scientists at Cornell University offers a promising solution. By replacing optical cameras with sonar technology, these researchers have developed a new system called “PoseSonic” that could address these issues and pave the way for the next generation of smart glasses.
The Advantages of Sonar-Based Tracking:
Current augmented reality (AR) smart glasses rely on cameras to track the wearer’s movements, but this approach has its limitations. Continuous video recording drains the battery quickly and raises privacy concerns. In contrast, sonar-based tracking offers several advantages. It is cheaper, more efficient, unobtrusive, and privacy-conscious.
The Technology Behind PoseSonic:
PoseSonic combines micro sonar, powered by CHIRP technology, with artificial intelligence to create an accurate echo profile image of the wearer. The micro sonar captures sound waves that are too quiet for human hearing. The technology’s creators have published their research in the journal ACM Digital Library.
How PoseSonic Works:
PoseSonic utilizes microphones, speakers, a microprocessor, Bluetooth module, battery, and sensors. The speakers emit inaudible sound waves that bounce off the wearer’s body and are then captured by the microphones. The microprocessor uses this information to generate a profile image, which is fed into an AI model. The AI estimates the 3D positions of nine body joints, including the shoulders, elbows, wrists, hips, and nose. Unlike other wearable systems, PoseSonic’s algorithm can work on any user without the need for specific training.
Cost-Effectiveness and Battery Life:
The researchers have successfully created a working prototype of PoseSonic for less than $40. With further manufacturing at scale, this cost can be reduced even further. In comparison, the ill-fated Google Glass cost $152 to make a decade ago. Additionally, PoseSonic’s use of audio equipment results in significant power savings. The technology can run on smart glasses for over 20 hours continuously, making it highly practical for everyday use.
Enhanced Privacy:
Sonar-based tracking offers enhanced privacy compared to camera-based systems. PoseSonic’s algorithm only processes the sound waves it produces itself to build the 3D image, instead of capturing images or using other sounds. Furthermore, the data can be processed locally on the wearer’s smartphone, reducing the risk of interception and ensuring greater data security.
Potential Applications:
The researchers envision two practical applications for acoustic tracking in smart glasses. Firstly, it could recognize upper body movements in day-to-day life, such as eating, drinking, or smoking. Secondly, it could track the wearer’s movements during exercise, providing more detailed feedback on body movement beyond basic step counts or calorie consumption. This technology has the potential to revolutionize behavior monitoring and assessment during physical activity.
Conclusion:
The development of PoseSonic represents a significant step forward in the evolution of smart glasses. By utilizing sonar technology, these glasses could offer improved accuracy, enhanced privacy, and cost-effectiveness. The integration of micro sonar and artificial intelligence opens up new possibilities for wearables in everyday settings. As technology continues to advance, it is exciting to envision a future where smart glasses become more accessible, functional, and seamlessly integrated into our lives.
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