In this paper, we propose a background subtraction based method using only two commodity cameras to detect user’s location with very low complexity computation and calibration free. According to the experimental result, the correlation coefficient of distance and the reciprocal of disparity is up to 0.9985. Proposed algorithm can provide user’s depth information with high accuracy from calibrat...

The method we propose simpli es the practical procedure for hand eye calibration Indeed no more calibration jig is needed and small calibration motions can be used Without calibration jig camera motions are computed up to an unknown scale factor through structure from motion algorithms rather than pose estimation This work was supported by the European Community through the Esprit IV reactive L...

We combine a low resolution Time-Of-Flight (TOF) depth image camera based on Photonic Mixer Devices with two standard cameras in a stereo configuration. We show that this approach is useful even without accurate calibration. In a graph cut approach, we use depth information from the low resolution TOF camera to initialise the domain, and colour information for accurate depth discontinuities in ...

RGB-D (Red Green Blue and Depth) sensors are devices that can provide color and depth information from a scene at the same time. Recently, they have been widely used in many solutions due to their commercial growth from the entertainment market to many diverse areas (e.g., robotics, CAD, etc.). In the research community, these devices have had good uptake due to their acceptable levelofaccuracy...

We present in this paper a new analysis of relative sensitivity/importance of camera calibra-tion/alignment parameters on the performance of stereoscopic depth reconstruction. For a given stereoscopic vision system, once stereo correspondence is successfully established, the accuracy of 3D measurements depends on the overall geometric structure of the model in relation to object distances. The ...