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Random refraction occurs in turbulence and through a wavy water-air interface. It creates distortion that changes in space, time and with viewpoint. Localizing objects in three dimensions (3D) despite this random distortion is important to some predators and also to submariners avoiding the salient use of periscopes. We take a multiview approach to this task. Refracted distortion statistics induce...
We present a new method to correct perspective and geometric distortions as well as to segment and refine page frames, presented in document images of paperback books. The proposed digitization process of paperback books is just like the process of scanning. Unlike traditional methods, our method is independent of document contents and does not need additional hardware or multiple images or luminance...
We present a prototype of optical tracking system running on unmodified HTC Evo 3D mobile phone with stereo camera. The system uses checkerboard markers for 3D metric reconstruction of the captured scene. We present the results of camera calibration and we assess the accuracy of tracking, by comparing the 3D point sets obtained from the system with a reference geometry. The accuracy of the prototype...
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