Long-range three-dimensional active imaging with superresolution depth mapping |
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Authors: | Laurenzis Martin Christnacher Frank Monnin David |
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Institution: | French-German Research Institute of Saint-Louis, France. laurenzis@isl.tm.fr |
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Abstract: | We present a technique to overcome the depth resolution limitation for 3D active imaging. Applying microsecond laser pulses and sensor gate width, a scene of several hundred meters is illuminated and recorded in a single image. The trapezoid-shaped range intensity profile is analyzed to obtain both the reflectivity and the depth of scene. We demonstrate a 3D scene reconstruction in a depth of 650 to 1550 m from only three images with an accuracy of <30 m. This depth accuracy is 10 times better than estimated from the classical resolution limit obtained for depth scanning active imaging with a similar number of images. Therefore, this technique enables superresolution depth mapping with a reduction of image data processing. |
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