LogInCheck out this cool system by Rhizomatiks that can track the rapiers used in fencing matches.
Rhizomatiks' Fencing Tracking and Visualization system uses AR technology to visualize the tips of swords in motion. Building on various development processes since 2012, the system has been updated to utilize deep learning to visualize sword tips without markers. The system enables detection of sword tips, which human eyes cannot follow, and real-time AR synthesis to instantly visualize the trajectory.
"Since 2016, we have started the development of a system that can detect sword tip position from camera images alone without causing any inconvenience to fencers, in order to enable the introduction of the system in actual matches. The difficulty was that fencing swords move very quickly, and the form of the sword changes greatly as it bends," reads Rhizomatiks' website in regards to the system's development. "Additionally, sword tips are only a few pixels in width even when captured by a 4K camera, and this is too small to detect with a traditional image processing approach. These challenges led us to start the development of a new deep neural network system for object detection with cascaded classifiers based on YOLO v3, a general deep learning algorithm for object detection, combined with special hardware and camera configuration."
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