Patents Assigned to Image Metrics Ltd
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Patent number: 12299930Abstract: In one or more implementations, body features of a subject can be tracked and a pose estimation produced using an unconstrained video sequence. The video sequence constitutes a physical record of the body features of the subject. A set of 2D coordinates corresponding to the body features of the subject can be received from a first neural network and 2D Keypoints are detected and transmitted to a second neural network. The second neural network can return corresponding depth estimation values, which can be processed to generate a set of 3D coordinates that correspond to the body features of the subject in camera space. Furthermore, one or more non-linear optimizations can be applied to fit a predetermined skeleton to the generate 3D Keypoints, and produce the pose estimation corresponding to the body features of the subject.Type: GrantFiled: June 9, 2022Date of Patent: May 13, 2025Assignee: Image Metrics, Ltd.Inventors: Kevin Walker, Mike Rogers, Chris Bowles, Matthew Oakes, Mike Taylor, Vincent Drouard
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Patent number: 10949649Abstract: A method for locating and tracking facial features in an unconstrained video sequence includes: in a face-detecting process, delineating, with region-bounding coordinates, the face of the subject within an image selected from the sequence; detecting, in the selected image, a small set of landmarks, corresponding to the face of the subject, using a convolutional neural network, trained to take as input an image region corresponding to the face of the—subject and to return a set of coordinates at computational speeds approximating real time; projectively fitting a three-dimensional character model to the detected landmarks, and using the fitted model to estimate physical locations of additional landmarks, so as to provide a complete hypothesized set of facial landmarks; and in a feature tracker process, updating the hypothesized set of facial landmarks to improve convergence between predicted feature locations and their actual physical locations based on data sampled from the selected image.Type: GrantFiled: February 22, 2019Date of Patent: March 16, 2021Assignee: Image Metrics, Ltd.Inventors: Kevin Walker, Mike Rogers, Mike Taylor, Matthew Oakes, Vincent Drouard, Carl Moore
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Publication number: 20110304622Abstract: 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: ApplicationFiled: August 22, 2011Publication date: December 15, 2011Applicant: Image Metrics LtdInventors: Michael Rogers, Kevin Walker, Steven Caulkin, Gareth Edwards
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Patent number: 8026917Abstract: 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: GrantFiled: April 30, 2007Date of Patent: September 27, 2011Assignee: Image Metrics LtdInventors: Michael Rogers, Kevin Walker, Steve Caulkin, Gareth Edwards