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A first-of-its-kind wristband that records the full body position in 3D has been created by Cornell researchers using a tiny camera and a specially designed deep neural network.BodyTrak is the first wearable to track the full body pose with a single camera. If integrated into future smartwatches, BodyTrak could be a game-changer in monitoring user body mechanics in physical activities where precision is critical, said Cheng Zhang, assistant professor of information science and the paper's senior author."Since smartwatches already have a camera, technology like BodyTrak could understand the user's pose and give real-time feedback," Zhang said. "That's handy, affordable and does not limit the user's moving area."A corresponding paper, "BodyTrak: Inferring Full-body Poses from Body Silhouettes Using a Miniature Camera on a Wristband," was published in the Proceedings of the Association for Computing Machinery (ACM) on Interactive, Mobile, Wearable and Ubiquitous Technology, and presented in September at UbiComp 2022, the ACM international conference on pervasive and ubiquitous computing.BodyTrak is the latest body-sensing system from the SciFiLab - based in the Cornell Ann S. Bowers College of Computing and Information Science - a group that has previously developed and leveraged similar deep learning models to track hand and finger movements, facial expressions and even silent-speech recognition.The secret to BodyTrak is not only in the dime-sized camera on the wrist, but also the customized deep neural network behind it. This deep neural network - a method of AI that trains computers to learn from mistakes - reads the camera's rudimentary images or "silhouettes" of the user's body in motion and virtually re-creates 14 body poses in 3D and in real time.In other words, the model accurately fills out and completes the partial images captured by the camera, said Hyunchul Lim, a doctoral student in the field of information science and the paper's lead author."Our research shows that we don't need our body frames to be fully within camera view for body sensing," Lim said. "If we are able to capture just a part of our bodies, that is a lot of information to infer to reconstruct the full body."Maintaining privacy for bystanders near someone wearing such a sensing device is a legitimate concern when developing these technologies, Zhang and Lim said. They said BodyTrak mitigates privacy concerns for bystanders since the camera is pointed toward the user's body and collects only partial body images of the user.They also recognize that today's smartwatches don't yet have small or powerful enough cameras and adequate battery life to integrate full body sensing, but could in the future.( With inputs from ANI )Disclaimer: This post has been auto-published from an agency feed without any modifications to the text and has not been reviewed by an editor

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