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Published byEmilio Chesterman Modified over 9 years ago
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Stereo Vision System Principle of Operation: Difference between two cameras gives depth information Steps: –Compute disparity image –Find obstacles in each column –Approximate with rectangles –Filter in time domain
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Challenges Quantization Noise Lighting condition Field of view Occlusion Range
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The left camera sees: Point Grey Bumblebee Focal Length: 4mm Resolution: 640x480 Black & White
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The right camera sees: Point Grey Bumblebee Focal Length: 4mm Resolution: 640x480 Black & White
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Yielding a disparity map: Intensity indicates distance: the lighter, the closer White indicates an invalidated location.
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Processing in each column: Intensity indicates confidence that an obstacle exists at that location. A darker line indicates a higher confidence.
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Bounding with rectangles: Darker rectangles indicate higher confidence.
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Data Representation Reference: http://www.darpa.mil/grandchallen ge/TechPapers/Stanford.pdf vs.
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Tracking
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