Unitary realization of wavefunction collapse

Recent quantum reconstruction projects demand pure unitary time evolution which seems to contradict the collapse postulate. A natural unitary realization of wavefunction collapse is built using Grothendick group construction for the tensor product commutative monoid. Envariance and quantum Darwinism are key ingredients in the proof.Comment: 4 page

Single Camera Calibration in 3D Vision

Camera calibration is a necessary step in 3D vision in order to extract metric information from 2D images. A camera is considered to be calibrated when the parameters of the camera are known (i.e. principal distance, lens distorsion, focal length etc.). In this paper we deal with a single camera calibration method and with the help of this method we try to find the intrinsic and extrinsic camera parameters. The method was implemented with succes in the programming and simulation environment Matlab