公开(公告)号：US11902671B2

公开(公告)日：2024-02-13

申请号：US17547103

申请日：2021-12-09

申请人： FotoNation Limited

发明人： Istvan Andorko ,  Petronel Bigioi ,  Piotr Stec

IPC分类号： H04N23/74 ,  H04N25/42 ,  G06V10/25 ,  G06V40/16 ,  B60R11/04

CPC分类号： H04N23/74 ,  B60R11/04 ,  G06V10/25 ,  G06V40/16 ,  H04N25/42

摘要： A vehicle occupant monitoring system, OMS, comprises: an image acquisition device comprising an image sensor and a lens assembly having a varying transmissivity across a field of view of the image sensor; at least one infra-red, IR, light source disposed within a cabin of the vehicle and being configured to illuminate at least one occupant of the vehicle with varying illumination across the field of view of the image sensor; and an image processing pipeline configured to obtain and pre-process an image acquired from the image sensor in accordance with a lens shading map and a cabin illumination map in order to compensate for both the varying transmissivity and the varying illumination in order to provide a more uniformly illuminated image to a controller for further analysis.

公开(公告)号：US11863556B2

公开(公告)日：2024-01-02

申请号：US17243236

申请日：2021-04-28

申请人： FotoNation Limited

发明人： Peter Corcoran ,  Ilariu Raducan ,  Petronel Bigioi

IPC分类号： H04L29/06 ,  H04W12/06 ,  H04L9/32 ,  H04W4/80 ,  H04W76/10 ,  H04W12/50 ,  H04L9/40 ,  H04W84/12 ,  H04W4/70 ,  H04W12/65 ,  H04W12/77 ,  H04W12/04

CPC分类号： H04L63/0876 ,  H04L9/3218 ,  H04L63/18 ,  H04W4/80 ,  H04W12/06 ,  H04W12/50 ,  H04W76/10 ,  H04L63/0861 ,  H04L2209/76 ,  H04L2209/805 ,  H04W4/70 ,  H04W12/04 ,  H04W12/65 ,  H04W12/77 ,  H04W84/12

摘要： A method operable by a computing device for configuring access for a limited user interface (UI) device to a network service via a local network access point is disclosed. The method comprises the steps of: obtaining from the limited UI device a device identifier via a first out-of-band channel. The device identifier is provided to the network service via a secure network link. A zero knowledge proof (ZKP) challenge is received from the network service. Configuration information is provided to the limited-UI device via a second out-of-band channel, the configuration information including information sufficient to enable the limited-UI device to connect to the local network access point. The ZKP challenge is provided to the limited-UI device via the second out-of-band channel. A secure channel key is received from the network service indicating a successful response from the limited-UI device to the ZKP challenge; and provided to the limited-UI device enabling the limited-UI device to access the network service.

公开(公告)号：US11797864B2

公开(公告)日：2023-10-24

申请号：US16194211

申请日：2018-11-16

申请人： FotoNation Limited

发明人： Shabab Bazrafkan ,  Peter Corcoran

IPC分类号： G06N20/00 ,  G06N3/094 ,  G06N7/00 ,  G06N3/08 ,  G06N3/084 ,  G06N3/088 ,  G06N3/045 ,  G06V10/764 ,  G06V10/774 ,  G06V10/82 ,  G06V40/16 ,  G06F18/214 ,  G06F18/2431

CPC分类号： G06N3/094 ,  G06N3/045 ,  G06N3/08 ,  G06N3/084 ,  G06N3/088 ,  G06N7/00 ,  G06N20/00 ,  G06V10/764 ,  G06V10/774 ,  G06V10/82 ,  G06V40/168 ,  G06F18/214 ,  G06F18/2431

摘要： Systems and methods for training a conditional generator model are described. Methods receive a sample, and determine a discriminator loss for the received sample. The discriminator loss is based on an ability to determine whether the sample is generated by the conditional generator model or is a ground truth sample. The method determines a secondary loss for the generated sample and updates the conditional generator model based on an aggregate of the discriminator loss and the secondary loss.

公开(公告)号：US11727541B2

公开(公告)日：2023-08-15

申请号：US17643984

申请日：2021-12-13

申请人： FotoNation Limited

发明人： Cian Ryan ,  Richard Blythman

IPC分类号： G06T7/00 ,  G06T5/00 ,  G06T5/10 ,  G06T5/50 ,  H04N23/951

CPC分类号： G06T5/003 ,  G06T5/10 ,  G06T5/50 ,  H04N23/951 ,  G06T2207/10016 ,  G06T2207/20084

摘要： A video super resolution method comprises successively executing instances of a first plurality of layers (SISR) of a neural network for generating a first image (St) at a higher resolution than an input image frame (Xt); successively executing a second plurality of layers (VSR) of the neural network for generating a second image (Vt) at the higher resolution, at least one of the second plurality of layers generating intermediate output information (Ht), the second plurality of layers taking into account an output image (Yt−1) at the higher resolution generated by a previous instance of the network from a previous input image frame (Xt−1) and intermediate output information (Ht−1) generated by the second plurality of layers of the previous instance, and executing a third plurality of layers for combining the first (St) and second (Vt) images to produce an output image (Yt) for the instance of the network.

公开(公告)号：US11722329B2

公开(公告)日：2023-08-08

申请号：US17495800

申请日：2021-10-06

申请人： FotoNation Limited

发明人： Razvan Condorovici ,  Andra Stan

IPC分类号： H04L12/18 ,  G06V20/40 ,  G06V40/18

CPC分类号： H04L12/1831 ,  G06V20/46 ,  G06V40/18 ,  H04L12/1822

摘要： A method at a first participant's client conferencing system in a videoconference comprises receiving, from a second client conferencing system, at least one first video frame of a first video signal including an image of the second participant looking at a third participant, and first metadata associated with the first video frame and including an identity of the third participant. The image of the second participant is modified in the first video frame so that the first video frame is displayed on a first area of the client conferencing system with the second participant looking at a second area of the first display configured for displaying a second video signal of the third participant identified by the first metadata.

公开(公告)号：US20230169771A1

公开(公告)日：2023-06-01

申请号：US17540011

申请日：2021-12-01

申请人： FotoNation Limited

发明人： Petronel BIGIOI ,  Cosmin TOCA ,  Ana BALABAN

IPC分类号： G06V20/50 ,  G06V10/764 ,  G06T7/20 ,  G06T7/70 ,  G06T7/00

CPC分类号： G06V20/50 ,  G06V10/764 ,  G06T7/20 ,  G06T7/70 ,  G06T7/97

摘要： An image processing system comprising a processer configured to receive a sequence of images frames from an image acquisition device and configured to: analyze at least a currently acquired image frame to determine if activity is occurring in an environment with a field of view of the image acquisition device; responsive to analyzing a subsequent image frame acquired after the currently acquired image frame and determining that no activity is occurring in the environment, retrieve an image frame acquired before the currently acquired image frame which has been analyzed and where it has been determined that no activity is occurring in the environment; analyze the subsequent image frame and the retrieved image frame to identify a state of one or more objects within the field of view of the image acquisition device; and responsive to a change in state of the one or more objects, notify a user accordingly.

公开(公告)号：US20230127692A1

公开(公告)日：2023-04-27

申请号：US18087938

申请日：2022-12-23

申请人： FotoNation Limited

发明人： Petronel Bigioi ,  Piotr Stec

IPC分类号： G06T7/80 ,  G06T7/13 ,  B60R1/12 ,  B60R11/04

摘要： A method for calibrating a vehicle cabin camera having: a pitch, yaw and roll angle; and a field of view capturing vehicle cabin features which are symmetric about a vehicle longitudinal axis comprises: selecting points from within an image of the vehicle cabin and projecting the points onto a 3D unit circle in accordance with a camera projection model. For each of one or more rotations of a set of candidate yaw and roll rotations, the method comprises: rotating the projected points with the rotation; flipping the rotated points about a pitch axis; counter-rotating the projected points with an inverse of the rotation; and mapping the counter-rotated points back into an image plane to provide a set of transformed points. A candidate rotation which provides a best match between the set of transformed points and the locations of the selected points in the image plane is selected.

公开(公告)号：US11593913B2

公开(公告)日：2023-02-28

申请号：US17833812

申请日：2022-06-06

申请人： FotoNation Limited

发明人： Piotr Stec ,  Vlad Georgescu

IPC分类号： G06T3/40 ,  G06T5/00

摘要： A method for correcting an image divides an output image into a grid with vertical sections of width smaller than the image width but wide enough to allow efficient bursts when writing distortion corrected line sections into memory. A distortion correction engine includes a relatively small amount of memory for an input image buffer but without requiring unduly complex control. The input image buffer accommodates enough lines of an input image to cover the distortion of a single most vertically distorted line section of the input image. The memory required for the input image buffer can be significantly less than would be required to store all the lines of a distorted input image spanning a maximal distortion of a complete line within the input image.

公开(公告)号：US11538192B1

公开(公告)日：2022-12-27

申请号：US17398965

申请日：2021-08-10

申请人： FotoNation Limited

发明人： Piotr Stec ,  Petronel Bigioi

IPC分类号： G06T7/80 ,  G06T7/13 ,  B60R1/12 ,  B60R11/04 ,  B60R11/00

摘要： A method for calibrating a vehicle cabin camera having: a pitch, yaw and roll angle; and a field of view capturing vehicle cabin features which are symmetric about a vehicle longitudinal axis comprises: selecting points from within an image of the vehicle cabin and projecting the points onto a 3D unit circle in accordance with a camera projection model. For each of one or more rotations of a set of candidate yaw and roll rotations, the method comprises: rotating the projected points with the rotation; flipping the rotated points about a pitch axis; counter-rotating the projected points with an inverse of the rotation; and mapping the counter-rotated points back into an image plane to provide a set of transformed points. A candidate rotation which provides a best match between the set of transformed points and the locations of the selected points in the image plane is selected.

公开(公告)号：US20220254105A1

公开(公告)日：2022-08-11

申请号：US17652078

申请日：2022-02-22

申请人： FotoNation Limited

发明人： Kartik Venkataraman

IPC分类号： G06T17/20 ,  G06T7/149 ,  G06V40/16 ,  G06T7/593

摘要： In an embodiment, a 3D facial modeling system includes a plurality of cameras configured to capture images from different viewpoints, a processor, and a memory containing a 3D facial modeling application and parameters defining a face detector, wherein the 3D facial modeling application directs the processor to obtain a plurality of images of a face captured from different viewpoints using the plurality of cameras, locate a face within each of the plurality of images using the face detector, wherein the face detector labels key feature points on the located face within each of the plurality of images, determine disparity between corresponding key feature points of located faces within the plurality of images, and generate a 3D model of the face using the depth of the key feature points.