Patents by Inventor Georgios Papandreou

Georgios Papandreou has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20260112119
    Abstract: Systems and methods for reconstructing 3D models of human bodies from 2D images that counts for perspective and/or distortion effects are provided. The systems and methods include reconstructing a three-dimensional model of an object in a three-dimensional scene from a two-dimensional image comprising an image of the object. The systems and methods include determining an absolute depth of a key point of the object in the image; determining, using the absolute depth of the key point, a three-dimensional position of the key point in the three-dimensional scene; generating, using a neural network, a three-dimensional representation of the object, the three-dimensional representation comprising mesh nodes defined in a coordinate system relative to the key point; and positioning the three-dimensional representation of the object in the scene based on the position of the key point by applying a position dependent rotation to the three-dimensional object.
    Type: Application
    Filed: December 17, 2025
    Publication date: April 23, 2026
    Inventors: Georgios Papandreou, Iason Kokkinos
  • Publication number: 20260057544
    Abstract: Examples disclosed herein relate to the use of shared pose data in extended reality (XR) tracking. A communication link is established between a first XR device and a second XR device. The second XR device is worn by a user. The first XR device receives pose data of the second XR device via the communication link and captures an image of the user. The user is identified based on the image and the pose data.
    Type: Application
    Filed: October 29, 2025
    Publication date: February 26, 2026
    Inventors: Brian Fulkerson, Thomas Muttenthaler, Georgios Papandreou, Daniel Wolf
  • Patent number: 12524963
    Abstract: Systems and methods for reconstructing 3D models of human bodies from 2D images that counts for perspective and/or distortion effects are provided. The systems and methods include reconstructing a three-dimensional model of an object in a three-dimensional scene from a two-dimensional image comprising an image of the object. The systems and methods include determining an absolute depth of a key point of the object in the image; determining, using the absolute depth of the key point, a three-dimensional position of the key point in the three-dimensional scene; generating, using a neural network, a three-dimensional representation of the object, the three-dimensional representation comprising mesh nodes defined in a coordinate system relative to the key point; and positioning the three-dimensional representation of the object in the scene based on the position of the key point by applying a position dependent rotation to the three-dimensional object.
    Type: Grant
    Filed: May 2, 2023
    Date of Patent: January 13, 2026
    Assignee: Snap Inc.
    Inventors: Georgios Papandreou, Iason Kokkinos
  • Patent number: 12482131
    Abstract: Examples disclosed herein relate to the use of shared pose data in extended reality (XR) tracking. A communication link is established between a first XR device and a second XR device. The second XR device is worn by a user. The first XR device receives pose data of the second XR device via the communication link and captures an image of the user. The user is identified based on the image and the pose data.
    Type: Grant
    Filed: August 15, 2023
    Date of Patent: November 25, 2025
    Assignee: Snap Inc.
    Inventors: Brian Fulkerson, Thomas Muttenthaler, Georgios Papandreou, Daniel Wolf
  • Publication number: 20250329068
    Abstract: Aspects of the present disclosure involve a system and a method for performing operations comprising: receiving a two-dimensional continuous surface representation of a three-dimensional object, the continuous surface comprising a plurality of landmark locations; determining a first set of soft membership functions based on a relative location of points in the two-dimensional continuous surface representation and the landmark locations; receiving a two-dimensional input image, the input image comprising an image of the object; extracting a plurality of features from the input image using a feature recognition model; generating an encoded feature representation of the extracted features using the first set of soft membership functions; generating a dense feature representation of the extracted features from the encoded representation using a second set of soft membership functions; and processing the second set of soft membership functions and dense feature representation using a neural image decoder model to
    Type: Application
    Filed: July 3, 2025
    Publication date: October 23, 2025
    Inventors: Iason Kokkinos, Georgios Papandreou, Riza Alp Guler
  • Patent number: 12394154
    Abstract: Methods and systems are disclosed for generating a body mesh from a single image. The system predicts both a volumetric reconstruction tensor of the monocular image and a pose of an object by applying a first machine learning model to a monocular image. The system identifies a portion of the pose of the object that corresponds to a point in a canonical space associated with a set of position encoding information. The system obtains a point of the volumetric reconstruction tensor corresponding to the identified portion of the pose. The system classifies the obtained point as being inside or outside of a canonical volume by applying a second machine learning model to the obtained point of the volumetric reconstruction tensor together with the set of position encoding information. The system generates a three-dimensional (3D) mesh representing the object in the canonical space.
    Type: Grant
    Filed: June 22, 2023
    Date of Patent: August 19, 2025
    Assignee: SNAP INC.
    Inventors: Riza Alp Guler, Frank Lu, Georgios Papandreou, Haoyang Wang
  • Patent number: 12380611
    Abstract: Aspects of the present disclosure involve a system and a method for performing operations comprising: receiving a two-dimensional continuous surface representation of a three-dimensional object, the continuous surface comprising a plurality of landmark locations; determining a first set of soft membership functions based on a relative location of points in the two-dimensional continuous surface representation and the landmark locations; receiving a two-dimensional input image, the input image comprising an image of the object; extracting a plurality of features from the input image using a feature recognition model; generating an encoded.
    Type: Grant
    Filed: July 15, 2022
    Date of Patent: August 5, 2025
    Assignee: Snap Inc.
    Inventors: Iason Kokkinos, Georgios Papandreou, Riza Alp Guler
  • Patent number: 12380649
    Abstract: Methods and systems are disclosed for performing operations comprising: receiving a video that includes a depiction of a real-world object; generating a three-dimensional (3D) body mesh associated with the real-world object that tracks movement of the real-world object across frames of the video; obtaining an external mesh associated with an augmented reality element; automatically establishing a correspondence between the 3D body mesh associated with the real-world object and the external mesh; deforming the external mesh based on movement of the real-world object and the established correspondence with the 3D body mesh; and modifying the video to include a display of the augmented reality element based on the deformed external mesh.
    Type: Grant
    Filed: January 16, 2024
    Date of Patent: August 5, 2025
    Assignee: Snap Inc.
    Inventors: Yanli Zhao, Matan Zohar, Brian Fulkerson, Georgios Papandreou, Haoyang Wang
  • Publication number: 20250182420
    Abstract: Methods and systems are disclosed for performing operations for applying augmented reality elements to a person depicted in an image. The operations include receiving an image that includes data representing a depiction of a person; extracting a portion of the image; applying a first machine learning model stage to the portion to predict a depth of a point of interest for the data representing the depiction of the person; applying a second machine learning model stage to the portion of the image to predict a relative depth of each pixel in the portion of the image to the predicted depth of the point of interest; generating dense depth reconstruction of the data representing the depiction of the person based on outputs of the first and second stages of the machine learning model; and applying one or more AR elements to the image based on the dense depth reconstruction.
    Type: Application
    Filed: February 12, 2025
    Publication date: June 5, 2025
    Inventors: Madiyar Aitbayev, Brian Fulkerson, Riza Alp Guler, Georgios Papandreou, Himmy Tam
  • Patent number: 12254577
    Abstract: Methods and systems are disclosed for performing operations for applying augmented reality elements to a person depicted in an image. The operations include receiving an image that includes data representing a depiction of a person; extracting a portion of the image; applying a first machine learning model stage to the portion to predict a depth of a point of interest for the data representing the depiction of the person; applying a second machine learning model stage to the portion of the image to predict a relative depth of each pixel in the portion of the image to the predicted depth of the point of interest; generating dense depth reconstruction of the data representing the depiction of the person based on outputs of the first and second stages of the machine learning model; and applying one or more AR elements to the image based on the dense depth reconstruction.
    Type: Grant
    Filed: June 16, 2022
    Date of Patent: March 18, 2025
    Assignee: SNAP INC.
    Inventors: Madiyar Aitbayev, Brian Fulkerson, Riza Alp Guler, Georgios Papandreou, Himmy Tam
  • Publication number: 20250061730
    Abstract: This specification relates to reconstructing three-dimensional (3D) scenes from two-dimensional (2D) images using a neural network. According to a first aspect of this specification, there is described a method for creating a three-dimensional reconstruction of a scene with multiple objects from a single two-dimensional image, the method comprising: receiving a single two-dimensional image; identifying all objects in the image to be reconstructed and identifying the type of said objects; estimating a three-dimensional representation of each identified object; estimating a three-dimensional plane physically supporting all three-dimensional objects; and positioning all three-dimensional objects in space relative to the supporting plane.
    Type: Application
    Filed: November 4, 2024
    Publication date: February 20, 2025
    Inventors: Riza Alp Guler, Georgios Papandreou, Iason Kokkinos
  • Publication number: 20250022162
    Abstract: Examples disclosed herein relate to the use of shared pose data in extended reality (XR) tracking. A communication link is established between a first XR device and a second XR device. The second XR device is worn by a user. The first XR device receives pose data of the second XR device via the communication link and captures an image of the user. The user is identified based on the image and the pose data.
    Type: Application
    Filed: August 15, 2023
    Publication date: January 16, 2025
    Inventors: Brian Fulkerson, Thomas Muttenthaler, Georgios Papandreou, Daniel Wolf
  • Patent number: 12169975
    Abstract: This specification relates to reconstructing three-dimensional (3D) scenes from two-dimensional (2D) images using a neural network. According to a first aspect of this specification, there is described a method for creating a three-dimensional reconstruction of a scene with multiple objects from a single two-dimensional image, the method comprising: receiving a single two-dimensional image; identifying all objects in the image to be reconstructed and identifying the type of said objects; estimating a three-dimensional representation of each identified object; estimating a three-dimensional plane physically supporting all three-dimensional objects; and positioning all three-dimensional objects in space relative to the supporting plane.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: December 17, 2024
    Assignee: SNAP INC.
    Inventors: Riza Alp Guler, Georgios Papandreou, Iason Kokkinos
  • Publication number: 20240404220
    Abstract: Methods and systems are disclosed for performing operations for applying augmented reality elements to a person depicted in an image. The operations include receiving an image that includes data representing a depiction of a person; generating a segmentation of the data representing the person depicted in the image; extracting a portion of the image corresponding to the segmentation of the data representing the person depicted in the image; applying a machine learning model to the portion of the image to predict a surface normal tensor for the data representing the depiction of the person, the surface normal tensor representing surface normals of each pixel within the portion of the image; and applying one or more augmented reality (AR) elements to the image based on the surface normal tensor.
    Type: Application
    Filed: August 8, 2024
    Publication date: December 5, 2024
    Inventors: Madiyar Aitbayev, Brian Fulkerson, Riza Alp Guler, Georgios Papandreou, Himmy Tam
  • Patent number: 12148105
    Abstract: Methods and systems are disclosed for performing operations for applying augmented reality elements to a person depicted in an image. The operations include receiving an image that includes data representing a depiction of a person; generating a segmentation of the data representing the person depicted in the image; extracting a portion of the image corresponding to the segmentation of the data representing the person depicted in the image; applying a machine learning model to the portion of the image to predict a surface normal tensor for the data representing the depiction of the person, the surface normal tensor representing surface normals of each pixel within the portion of the image; and applying one or more augmented reality (AR) elements to the image based on the surface normal tensor.
    Type: Grant
    Filed: June 16, 2022
    Date of Patent: November 19, 2024
    Assignee: SNAP INC.
    Inventors: Madiyar Aitbayev, Brian Fulkerson, Riza Alp Guler, Georgios Papandreou, Himmy Tam
  • Publication number: 20240346763
    Abstract: Methods and systems are disclosed for generating a body mesh from a single image. The system predicts both a volumetric reconstruction tensor of the monocular image and a pose of an object by applying a first machine learning model to a monocular image. The system identifies a portion of the pose of the object that corresponds to a point in a canonical space associated with a set of position encoding information. The system obtains a point of the volumetric reconstruction tensor corresponding to the identified portion of the pose. The system classifies the obtained point as being inside or outside of a canonical volume by applying a second machine learning model to the obtained point of the volumetric reconstruction tensor together with the set of position encoding information. The system generates a three-dimensional (3D) mesh representing the object in the canonical space.
    Type: Application
    Filed: June 22, 2023
    Publication date: October 17, 2024
    Inventors: Riza Alp Guler, Frank Lu, Georgios Papandreou, Haoyang Wang
  • Patent number: 12094066
    Abstract: Methods and systems are disclosed for performing operations for applying augmented reality elements to a person depicted in an image. The operations include receiving an image that includes data representing a depiction of a person; generating a segmentation of the data representing the person depicted in the image; extracting a portion of the image corresponding to the segmentation of the data representing the person depicted in the image; applying a machine learning model to the portion of the image to predict a surface normal tensor for the data representing the depiction of the person, the surface normal tensor representing surface normals of each pixel within the portion of the image; and applying one or more augmented reality (AR) elements to the image based on the surface normal tensor.
    Type: Grant
    Filed: June 16, 2022
    Date of Patent: September 17, 2024
    Assignee: SNAP INC.
    Inventors: Madiyar Aitbayev, Brian Fulkerson, Riza Alp Guler, Georgios Papandreou, Himmy Tam
  • Publication number: 20240303937
    Abstract: Methods and systems are disclosed for generating a 3D body mesh. The system receives an image that includes a depiction of a real-world object in a real-world environment. The system applies a first machine learning model to a portion of the image that depicts the real-world object to predict a tensor of heatmaps representing vertex positions of a plurality of triangles of a 3D mesh corresponding to the real-world object. First and second heatmaps of the tensor represent respectively first and second groups of possible coordinates for a first vertex of a first triangle of the plurality of triangles. The system generates the 3D mesh based on the selected subset of the tensor of heatmaps.
    Type: Application
    Filed: June 23, 2023
    Publication date: September 12, 2024
    Inventors: Riza Alp Guler, Antonios Kakolyris, Iason Kokkinos, Petros Koutras, Eric-Tuan Le, Georgios Papandreou, Efstratios Skordos, Himmy Tam
  • Publication number: 20240153214
    Abstract: Methods and systems are disclosed for performing operations comprising: receiving a video that includes a depiction of a real-world object; generating a three-dimensional (3D) body mesh associated with the real-world object that tracks movement of the real-world object across frames of the video; obtaining an external mesh associated with an augmented reality element; automatically establishing a correspondence between the 3D body mesh associated with the real-world object and the external mesh; deforming the external mesh based on movement of the real-world object and the established correspondence with the 3D body mesh; and modifying the video to include a display of the augmented reality element based on the deformed external mesh.
    Type: Application
    Filed: January 16, 2024
    Publication date: May 9, 2024
    Inventors: Yanli Zhao, Matan Zohar, Brian Fulkerson, Georgios Papandreou, Haoyang Wang
  • Patent number: 11908083
    Abstract: Methods and systems are disclosed for performing operations comprising: receiving a video that includes a depiction of a real-world object; generating a three-dimensional (3D) body mesh associated with the real-world object that tracks movement of the real-world object across frames of the video; obtaining an external mesh associated with an augmented reality element; automatically establishing a correspondence between the 3D body mesh associated with the real-world object and the external mesh; deforming the external mesh based on movement of the real-world object and the established correspondence with the 3D body mesh; and modifying the video to include a display of the augmented reality element based on the deformed external mesh.
    Type: Grant
    Filed: August 31, 2021
    Date of Patent: February 20, 2024
    Assignee: Snap Inc.
    Inventors: Yanli Zhao, Matan Zohar, Brian Fulkerson, Georgios Papandreou, Haoyang Wang