Abstract: A method of rectifying a stereoscopic image consisting of left and right captured images comprises determining left and right rectification transformations. According to one aspect of the invention, statistics of the parameters of the stereoscopic image capture device used to capture the left and right images are used in the determination of the left and/or right rectification transformation. According to another aspect of the invention, the left and right rectification transformations are constrained to correspond to a transformation to a virtual alignment to a parallel camera set-up. Once the left and right rectification transformations have been determined they are preferably used to rectify the left and right images to eliminate, or substantially eliminate, vertical disparity from the rectified image pair. The left and right rectified images may then be displayed on a stereoscopic display device for viewing by an observer, or they may alternatively be stored for later use.

Abstract: A method of producing a stereo image of a (real or simulated) scene using at least one (real or simulated) camera, which creates the impression of being a 3D image when viewed on a display by a user, wherein the depth of the scene is mapped onto a maximum perceived depth of the image on the display, and the maximum perceived depth is chosen to provide comfortable viewing for the user.

Abstract: A method of rectifying a stereoscopic image consisting of left and right captured images comprises determining left and right rectification transformations. According to one aspect of the invention, statistics of the parameters of the stereoscopic image capture device used to capture the left and right images are used in the determination of the left and/or right rectification transformation.

Abstract: A 3D camera includes at least two detector heads which are moveable laterally with respect to each other but whose optical are maintained parallel. Each of the detector heads includes a zoom lens and a detector. A user selects the separation between the detector heads and the camera electronics automatically select the field of view by controlling the zoom lenses as a function of the detector head separation.

Abstract: A method of seismic surveying uses seismic waveguides in the earth. Seismic energy is transmitted from outside the waveguide and detected within the waveguide or vice-versa. Coupling of energy between the outside and the inside of the waveguide is effected by energy leakage at coupling sites where the waveguide departs from planarity. The method analyzes seismic signals to determine the position and nature of coupling sites and the propagation characteristics of the waveguide.