1 September 1990 Real-time implementation of a differential range finder
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A scheme is presented for the estimation of differential ranges on the basis of optical flow along a known direction, giving attention to the factors affecting the accuracy of results and various spatial and temporal smoothing algorithms employed to enhance the method's accuracy. It is found that while the use of edge detectors reduces noise, a priori knowledge of the environment improves the method's range discriminability. The method has been implemented on a real-time, high speed pipelined image processing engine capable of processing 60 image frames/sec, using a horizontally moving camera which generates optical flow along a scan line.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ramesh M. Rangachar, Ramesh M. Rangachar, Tsai Hong Hong, Tsai Hong Hong, Martin Herman, Martin Herman, Jasper Lupo, Jasper Lupo, "Real-time implementation of a differential range finder", Proc. SPIE 1295, Real-Time Image Processing II, (1 September 1990); doi: 10.1117/12.21239; https://doi.org/10.1117/12.21239

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