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4 March 2014 A high speed 2D time-to-impact algorithm targeted for smart image sensors
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In this paper we present a 2D extension of a previously described 1D method for a time-to-impact sensor [5][6]. As in the earlier paper, the approach is based on measuring time instead of the apparent motion of points in the image plane to obtain data similar to the optical flow. The specific properties of the motion field in the time-to-impact application are used, such as using simple feature points which are tracked from frame to frame. Compared to the 1D case, the features will be proportionally fewer which will affect the quality of the estimation. We give a proposal on how to solve this problem. Results obtained are as promising as those obtained from the 1D sensor.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Anders Åström and Robert Forchheimer "A high speed 2D time-to-impact algorithm targeted for smart image sensors", Proc. SPIE 9022, Image Sensors and Imaging Systems 2014, 90220Q (4 March 2014);

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