公开(公告)号：US20200334491A1

公开(公告)日：2020-10-22

申请号：US16916034

申请日：2020-06-29

Applicant: Ultrahaptics IP Two Limited

Inventor： David S. Holz ,  Hua Yang

IPC: G06K9/62 ,  H04N5/232 ,  G06T7/246 ,  G06T7/254 ,  H04N13/254 ,  G06T7/70 ,  G06T7/11 ,  G06T7/215 ,  G06F3/01 ,  G06F3/03 ,  G06K9/46 ,  G06K9/00 ,  G06K9/32 ,  G06K9/20 ,  G06T7/194 ,  G06T7/10 ,  G06T7/262 ,  G06T7/33 ,  G06T7/37 ,  G06T7/90

Abstract: Enhanced contrast between an object of interest and background surfaces visible in an image is provided using controlled lighting directed at the object. Exploiting the falloff of light intensity with distance, a light source (or multiple light sources), such as an infrared light source, can be positioned near one or more cameras to shine light onto the object while the camera(s) capture images. The captured images can be analyzed to distinguish object pixels from background pixels.

公开(公告)号：US20250021169A1

公开(公告)日：2025-01-16

申请号：US18780192

申请日：2024-07-22

Applicant: Ultrahaptics IP Two Limited

Inventor： David S. HOLZ ,  Hua Yang

IPC: G06F3/01 ,  G06F3/03 ,  G06T7/10 ,  G06T7/11 ,  G06T7/194 ,  G06T7/215 ,  G06T7/246 ,  G06T7/254 ,  G06T7/262 ,  G06T7/33 ,  G06T7/37 ,  G06T7/70 ,  G06T7/90 ,  G06V20/64 ,  G06V40/10 ,  H04N13/254 ,  H04N23/661

Abstract: A method for detecting a finger is provided. The method includes obtaining a plurality of digital images including a first digital image captured by a camera from a field of view containing a background and a hand including at least one finger, and obtaining an identification of pixels of the plurality of digital images that correspond to at least one finger that is visible in the plurality of digital images rather than to the background, the pixels being identified by: obtaining, from the digital images, a Gaussian brightness falloff pattern indicative of at least one finger, identifying an axis of the at least one finger based on the obtained Gaussian brightness falloff pattern indicative of the at least one finger without identifying edges of the at least one finger, and identifying the pixels that correspond to the at least one finger based on the identified axis.

公开(公告)号：US12086327B2

公开(公告)日：2024-09-10

申请号：US18369768

申请日：2023-09-18

Applicant: Ultrahaptics IP Two Limited

Inventor： David S. Holz ,  Hua Yang

IPC: G06F3/01 ,  G06F3/03 ,  G06T7/10 ,  G06T7/11 ,  G06T7/194 ,  G06T7/215 ,  G06T7/246 ,  G06T7/254 ,  G06T7/262 ,  G06T7/33 ,  G06T7/37 ,  G06T7/70 ,  G06T7/90 ,  G06V20/64 ,  G06V40/10 ,  H04N13/254 ,  H04N23/661

CPC classification number: G06F3/017 ,  G06F3/0304 ,  G06T7/10 ,  G06T7/11 ,  G06T7/194 ,  G06T7/215 ,  G06T7/248 ,  G06T7/251 ,  G06T7/254 ,  G06T7/262 ,  G06T7/344 ,  G06T7/37 ,  G06T7/70 ,  G06T7/90 ,  G06V20/64 ,  G06V40/107 ,  H04N13/254 ,  H04N23/661 ,  G06T2200/04 ,  G06T2207/10012 ,  G06T2207/10016

Abstract: A method for detecting a finger is provided. The method includes obtaining a plurality of digital images including a first digital image captured by a camera from a field of view containing a background and a hand including at least one finger, and obtaining an identification of pixels of the plurality of digital images that correspond to at least one finger that is visible in the plurality of digital images rather than to the background, the pixels being identified by: obtaining, from the digital images, a Gaussian brightness falloff pattern indicative of at least one finger, identifying an axis of the at least one finger based on the obtained Gaussian brightness falloff pattern indicative of the at least one finger without identifying edges of the at least one finger, and identifying the pixels that correspond to the at least one finger based on the identified axis.

公开(公告)号：US10699155B2

公开(公告)日：2020-06-30

申请号：US16525475

申请日：2019-07-29

Applicant: Ultrahaptics IP Two Limited

Inventor： David S. Holz ,  Hua Yang

IPC: G06K9/62 ,  H04N5/232 ,  G06T7/246 ,  G06T7/254 ,  H04N13/254 ,  G06T7/70 ,  G06T7/11 ,  G06T7/215 ,  G06F3/01 ,  G06F3/03 ,  G06K9/46 ,  G06K9/00 ,  G06K9/20 ,  G06T7/194 ,  G06T7/10 ,  G06T7/262 ,  G06T7/33 ,  G06T7/37 ,  G06T7/90 ,  G06K9/32

Abstract: Enhanced contrast between an object of interest and background surfaces visible in an image is provided using controlled lighting directed at the object. Exploiting the falloff of light intensity with distance, a light source (or multiple light sources), such as an infrared light source, can be positioned near one or more cameras to shine light onto the object while the camera(s) capture images. The captured images can be analyzed to distinguish object pixels from background pixels.

公开(公告)号：US20190392247A1

公开(公告)日：2019-12-26

申请号：US16525475

申请日：2019-07-29

Applicant: Ultrahaptics IP Two Limited

Inventor： David S. Holz ,  Hua Yang

IPC: G06K9/62 ,  H04N5/232 ,  G06T7/246 ,  G06T7/254 ,  H04N13/254 ,  G06T7/70 ,  G06T7/11 ,  G06T7/215 ,  G06F3/01 ,  G06F3/03 ,  G06K9/46 ,  G06K9/00 ,  G06K9/32 ,  G06K9/20 ,  G06T7/194 ,  G06T7/10 ,  G06T7/262 ,  G06T7/33 ,  G06T7/37 ,  G06T7/90

Abstract: Enhanced contrast between an object of interest and background surfaces visible in an image is provided using controlled lighting directed at the object. Exploiting the falloff of light intensity with distance, a light source (or multiple light sources), such as an infrared light source, can be positioned near one or more cameras to shine light onto the object while the camera(s) capture images. The captured images can be analyzed to distinguish object pixels from background pixels.

公开(公告)号：US12265761B2

公开(公告)日：2025-04-01

申请号：US18406059

申请日：2024-01-05

Applicant: ULTRAHAPTICS IP TWO LIMITED

Inventor： David S. Holz ,  Kevin Horowitz ,  Raffi Bedikian ,  Hua Yang

IPC: G06F30/20 ,  G06F3/01 ,  G06V20/64 ,  G06V40/20

Abstract: The technology disclosed relates to simplifying updating of a predictive model using clustering observed points. In particular, it relates to observing a set of points in 3D sensory space, determining surface normal directions from the points, clustering the points by their surface normal directions and adjacency, accessing a predictive model of a hand, refining positions of segments of the predictive model, matching the clusters of the points to the segments, and using the matched clusters to refine the positions of the matched segments. It also relates to distinguishing between alternative motions between two observed locations of a control object in a 3D sensory space by accessing first and second positions of a segment of a predictive model of a control object such that motion between the first position and the second position was at least partially occluded from observation in a 3D sensory space.

公开(公告)号：US20220198776A1

公开(公告)日：2022-06-23

申请号：US17693200

申请日：2022-03-11

Applicant: Ultrahaptics IP Two Limited

Inventor： David S. HOLZ ,  Hua Yang

IPC: G06V10/75 ,  G06T7/246 ,  G06T7/254 ,  H04N13/254 ,  G06T7/70 ,  G06T7/11 ,  G06T7/215 ,  G06F3/01 ,  G06F3/03 ,  H04N5/232 ,  G06V10/25 ,  G06V10/40 ,  G06V10/141 ,  G06V20/64 ,  G06V40/10 ,  G06T7/194 ,  G06T7/10 ,  G06T7/262 ,  G06T7/33 ,  G06T7/37 ,  G06T7/90

Abstract: A method for detecting a finger is provided. The method includes obtaining a plurality of digital images including a first digital image captured by a camera from a field of view containing a background and a hand including at least one finger, and obtaining an identification of pixels of the plurality of digital images that correspond to at least one finger that is visible in the plurality of digital images rather than to the background, the pixels being identified by: obtaining, from the digital images, a Gaussian brightness falloff pattern indicative of at least one finger, identifying an axis of the at least one finger based on the obtained Gaussian brightness falloff pattern indicative of the at least one finger without identifying edges of the at least one finger, and identifying the pixels that correspond to the at least one finger based on the identified axis.

公开(公告)号：US11182685B2

公开(公告)日：2021-11-23

申请号：US16000768

申请日：2018-06-05

Applicant: Ultrahaptics IP Two Limited

Inventor： David S. Holz ,  Raffi Bedikian ,  Adrian Gasinski ,  Maxwell Sills ,  Hua Yang ,  Gabriel Hare

IPC: G06N5/04 ,  G06F3/0481 ,  G06F3/0484 ,  G06F3/03 ,  G06F3/042 ,  G06F3/01

Abstract: The technology disclosed relates to manipulating a virtual object. In particular, it relates to detecting a hand in a three-dimensional (3D) sensory space and generating a predictive model of the hand, and using the predictive model to track motion of the hand. The predictive model includes positions of calculation points of fingers, thumb and palm of the hand. The technology disclosed relates to dynamically selecting at least one manipulation point proximate to a virtual object based on the motion tracked by the predictive model and positions of one or more of the calculation points, and manipulating the virtual object by interaction between at least some of the calculation points of the predictive model and the dynamically selected manipulation point.

公开(公告)号：US20210081054A1

公开(公告)日：2021-03-18

申请号：US17093490

申请日：2020-11-09

Applicant: Ultrahaptics IP Two Limited

Inventor： Hua Yang ,  Leonid Kontsevich ,  James Donald ,  David S. Holz ,  Jonathan Marsden ,  Paul Durdik

IPC: G06F3/01 ,  G06T19/00 ,  G06F3/0481 ,  G06F3/0486

Abstract: During control of a user interface via free-space motions of a hand or other suitable control object, switching between control modes can be facilitated by tracking the control object's movements relative to, and its contact with a “virtual touch plane or surface” (i.e., a plane, portion of a plane, and/or surface computationally defined in space, or corresponding to any physical surface).

公开(公告)号：US10739965B2

公开(公告)日：2020-08-11

申请号：US16228521

申请日：2018-12-20

Applicant: Ultrahaptics IP Two Limited

Inventor： David S. Holz ,  Raffi Bedikian ,  Adrian Gasinski ,  Hua Yang ,  Gabriel A. Hare ,  Maxwell Sills

IPC: G06F5/01 ,  G06T19/00 ,  G06F3/0484 ,  G06F3/01 ,  G06K9/46 ,  G06F3/03 ,  G06K9/20 ,  G06F3/042 ,  G06K9/00 ,  G06F3/02

Abstract: The technology disclosed relates to providing simplified manipulation of virtual objects by detected hand motions. In particular, it relates to a detecting hand motion and positions of the calculation points relative to a virtual object to be manipulated, dynamically selecting at least one manipulation point proximate to the virtual object based on the detected hand motion and positions of one or more of the calculation points, and manipulating the virtual object by interaction between the detected hand motion and positions of one or more of the calculation points and the dynamically selected manipulation point.