Three-Dimensional Ultrasonic Vision for Robotic Applications
IEEE Transactions on Pattern Analysis and Machine Intelligence
Probabilistic Expert Systems for Shape Recognition Applied to Ultrasonics Techniques
CIRA '97 Proceedings of the 1997 IEEE International Symposium on Computational Intelligence in Robotics and Automation
Shape Recognition and Orientation Detection for Industrial Applications using Ultrasonic Sensors
INTSYS '98 Proceedings of the IEEE International Joint Symposia on Intelligence and Systems
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This work explores an approach for obtaining three-dimensional scene representation by using optical and ultrasonic information. It combines a set of three-dimensional data obtained by air-transmission ultrasonic sensors, using the echo-pulse method, with a set of three-dimensional data captured by stereo vision or active triangulation techniques. Both data sets are 3D point clouds which are fused in order to get a hybrid depth map with three-dimensional information about the scene of interest. Because hybrid images contain not only visual information but also ultrasonic information they can be useful for scenarios with poor illumination, with special optical properties or even with transparent elements.