131 results about "Stereo pair" patented technology

An optically variable device includes a substrate and a plurality of optical elements formed in or on the substrate and being structured to provide a three-dimensional optical effect for a viewer when light is incident on the optical elements. The plurality of optical elements are arranged as a plurality of stereo pairs structured to reflect or refract light to corresponding focal points in three-dimensional space apart from the optically variable device to form the three-dimensional optical effect. The optical elements include one or more optical elements that are curved structures having a curvature that is either less than or greater than a semi-circle.

A two-dimensional image is displayed and a grey level image is drawn on said two-dimensional image defining a depth map. A stereo image pair is generated based on the depth map and an anaglyph image of the stereo image pair is displayed. Edits of the depth map are displayed by anaglyph image. A plurality of projection frames are generated based on the depth map, and interlaced and printed for viewing through a micro optical media. Optionally, a layered image is extracted from the two-dimensional image and the plurality of projection frames have an alignment correction shift to center the apparent position of the image. A measured depth map is optionally input, and a stereo pair is optionally input, with a depth map calculated based on the pair. The user selectively modifies the calculated and measured depth map, and the extracted layers, using painted grey levels. A ray trace optionally modifies the interlacing for optimization to a particular media.

The present invention provides a system (method and apparatus) for creating photorealistic 3D models of environments and / or objects from a plurality of stereo images obtained from a mobile stereo camera and optional monocular cameras. The cameras may be handheld, mounted on a mobile platform, manipulator or a positioning device. The system automatically detects and tracks features in image sequences and self-references the stereo camera in 6 degrees of freedom by matching the features to a database to track the camera motion, while building the database simultaneously. A motion estimate may be also provided from external sensors and fused with the motion computed from the images. Individual stereo pairs are processed to compute dense 3D data representing the scene and are transformed, using the estimated camera motion, into a common reference and fused together. The resulting 3D data is represented as point clouds, surfaces, or volumes. The present invention also provides a system (method and apparatus) for enhancing 3D models of environments or objects by registering information from additional sensors to improve model fidelity or to augment it with supplementary information by using a light pattern projector. The present invention also provides a system (method and apparatus) for generating photo-realistic 3D models of underground environments such as tunnels, mines, voids and caves, including automatic registration of the 3D models with pre-existing underground maps.

A method, a system, and a program for high-fidelity three-dimensional modeling of a large-scale urban environment, performing the following steps:acquiring imagery of the urban environment, containing vertical aerial stereo-pairs, oblique aerial images; street-level imagery; and terrestrial laser scans,acquiring metadata pertaining to performance, spatial location and orientation of imaging sensors providing the imagery;identifying pixels representing ground control-points and tie-points in every instance of the imagery where the ground control-points and tie-points have been captured;co-registering the instances of the imagery using the ground control-points, the tie-points and the metadata, andreferencing the co-registered imagery to a common, standard coordinate system.The referenced co-registration obtained enables:extraction of ground coordinates for each pixel located in overlapping segments of the imagery, representing a 3D-point within the urban environment; andapplying data pre-processing and 3D modeling procedures;to create the high-fidelity 3D model of a large-scale urban environment.