Cyberware

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The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform

Tshilidzi Marwala - One of the best experts on this subject based on the ideXlab platform.

Bo Xing - One of the best experts on this subject based on the ideXlab platform.

A. G. Paranhos - One of the best experts on this subject based on the ideXlab platform.

Maureen Stone - One of the best experts on this subject based on the ideXlab platform.

  • ACCV (2) - A hierarchical method for 3d rigid motion estimation
    Computer Vision – ACCV 2006, 2006
    Co-Authors: Thitiwan Srinark, Chandra Kambhamettu, Maureen Stone
    Abstract:

    We propose a hierarchical method for 3D rigid motion estimation between two 3D data sets of objects represented by triangular meshes. Multiresolution surfaces are generated from the original surface of each object. These surfaces are decomposed into small patches based on estimated geodesic distance and curvature information. In our method, segment-to-segment matching to recover rigid motions at each resolution level of surfaces is performed. Motion results from low resolution surface matching are propagated to higher resolution surface matching in order to generate a spatial constraint for similar segment selection. Our approach can recover 3D rigid motion of both rigid body and nonrigid body (with partial rigid areas). The method was tested to estimate rigid motions of 3D data obtained by the Cyberware scanner.

  • A Hierarchical Method for 3D Rigid Motion Estimation
    Lecture Notes in Computer Science, 2006
    Co-Authors: Thitiwan Srinark, Chandra Kambhamettu, Maureen Stone
    Abstract:

    We propose a hierarchical method for 3D rigid motion estimation between two 3D data sets of objects represented by triangular meshes. Multiresolution surfaces are generated from the original surface of each object. These surfaces are decomposed into small patches based on estimated geodesic distance and curvature information. In our method, segment-to-segment matching to recover rigid motions at each resolution level of surfaces is performed. Motion results from low resolution surface matching are propagated to higher resolution surface matching in order to generate a spatial constraint for similar segment selection. Our approach can recover 3D rigid motion of both rigid body and non-rigid body (with partial rigid areas). The method was tested to estimate rigid motions of 3D data obtained by the Cyberware scanner.

Steven Paquette - One of the best experts on this subject based on the ideXlab platform.

  • Three-Dimensional Image Capture and Applications - Comparison of Cyberware PX and PS 3D human head scanners
    Three-Dimensional Image Capture and Applications 2008, 2008
    Co-Authors: Jeremy Carson, Brian D. Corner, Eric Crockett, Steven Paquette
    Abstract:

    A common limitation of laser line three-Dimensional (3D) scanners is the inability to scan objects with surfaces that are either parallel to the laser line or that self-occlude. Filling in missing areas adds some unwanted inaccuracy to the 3D model. Capturing the human head with a Cyberware PS Head Scanner is an example of obtaining a model where the incomplete areas are difficult to fill accurately. The PS scanner uses a single vertical laser line to illuminate the head and is unable to capture data at top of the head, where the line of sight is tangent to the surface, and under the chin, an area occluded by the chin when the subject looks straight forward. The Cyberware PX Scanner was developed to obtain this missing 3D head data. The PX scanner uses two cameras offset at different angles to provide a more detailed head scan that captures surfaces missed by the PS scanner. The PX scanner cameras also use new technology to obtain color maps that are of higher resolution than the PS Scanner. The two scanners were compared in terms of amount of surface captured (surface area and volume) and the quality of head measurements when compared to direct measurements obtained through standard anthropometry methods. Relative to the PS scanner, the PX head scans were more complete and provided the full set of head measurements, but actual measurement values, when available from both scanners, were about the same.

  • comparison of Cyberware px and ps 3d human head scanners
    electronic imaging, 2008
    Co-Authors: Jeremy Carson, Brian D. Corner, Eric Crockett, Steven Paquette
    Abstract:

    A common limitation of laser line three-Dimensional (3D) scanners is the inability to scan objects with surfaces that are either parallel to the laser line or that self-occlude. Filling in missing areas adds some unwanted inaccuracy to the 3D model. Capturing the human head with a Cyberware PS Head Scanner is an example of obtaining a model where the incomplete areas are difficult to fill accurately. The PS scanner uses a single vertical laser line to illuminate the head and is unable to capture data at top of the head, where the line of sight is tangent to the surface, and under the chin, an area occluded by the chin when the subject looks straight forward. The Cyberware PX Scanner was developed to obtain this missing 3D head data. The PX scanner uses two cameras offset at different angles to provide a more detailed head scan that captures surfaces missed by the PS scanner. The PX scanner cameras also use new technology to obtain color maps that are of higher resolution than the PS Scanner. The two scanners were compared in terms of amount of surface captured (surface area and volume) and the quality of head measurements when compared to direct measurements obtained through standard anthropometry methods. Relative to the PS scanner, the PX head scans were more complete and provided the full set of head measurements, but actual measurement values, when available from both scanners, were about the same.

  • Three-Dimensional Image Capture and Applications - Automatic reconstruction of the top of the head from Cyberware PS head scan data
    Three-Dimensional Image Capture and Applications IV, 2001
    Co-Authors: Brian D. Corner, Steven Paquette
    Abstract:

    Most current 3-D head scanners cannot capture a complete surface of the head due to limitation in view. As a postprocessing aid, we developed an automated method for approximating the top of the head surface. The top-of-head surface is usually the largest void area in a 360-degree head scan such as these obtained with a Cyberware PS head scanner. In this paper, we describe a two-step B-spline curve/surface approximation process to reconstruct the top ofhead from raw data set.

  • automatic reconstruction of the top of the head from Cyberware ps head scan data
    Proceedings of SPIE, 2001
    Co-Authors: Brian D. Corner, Steven Paquette
    Abstract:

    Most current 3-D head scanners cannot capture a complete surface of the head due to limitation in view. As a postprocessing aid, we developed an automated method for approximating the top of the head surface. The top-of-head surface is usually the largest void area in a 360-degree head scan such as these obtained with a Cyberware PS head scanner. In this paper, we describe a two-step B-spline curve/surface approximation process to reconstruct the top ofhead from raw data set.