Patents Assigned to Image Metrics Ltd
  • Publication number: 20110304622
    Abstract: Computer-implemented methods and computer program products for automatically transferring expressions between rigs with consistent joint structure, and for automatically transferring skin weights between different skin meshes based on joint positioning. A method is provided for transferring an expression between a plurality of source rigs and a target rig, where each rig characterizes an animated character, and each rig, in turn, is characterized by a set of joints and a skin mesh having a plurality of vertices, with each vertex characterized by a matrix of weights relating a response of the vertex to movement of associated joints. A set of offsets is calculated of joint positions of a goal expression of each source rig relative to a neutral expression of the source rig. A scaling transformation is then applied to the set of offsets to produce a scaled set of offsets, which are added, in turn, to a neutral expression of the target rig.
    Type: Application
    Filed: August 22, 2011
    Publication date: December 15, 2011
    Applicant: Image Metrics Ltd
    Inventors: Michael Rogers, Kevin Walker, Steven Caulkin, Gareth Edwards
  • Patent number: 8026917
    Abstract: Computer-implemented methods and computer program products for automatically transferring expressions between rigs with consistent joint structure, and for automatically transferring skin weights between different skin meshes based on joint positioning. A method is provided for transferring an expression between a source rig and a target rig, where each rig characterizes an animated character, and each rig, in turn, is characterized by a set of joints and a skin mesh having a plurality of vertices, with each vertex characterized by a matrix of weights relating a response of the vertex to movement of associated joints. A set of offsets is calculated of joint positions of a goal expression of the source rig relative to a neutral expression of the source rig. A scaling transformation is then applied to the set of offsets to produce a scaled set of offsets, which are added, in turn, to a neutral expression of the target rig.
    Type: Grant
    Filed: April 30, 2007
    Date of Patent: September 27, 2011
    Assignee: Image Metrics Ltd
    Inventors: Michael Rogers, Kevin Walker, Steve Caulkin, Gareth Edwards