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    Method for image processing and apparatus for implementing the same
    51.
    发明授权
    Method for image processing and apparatus for implementing the same 有权

    公开(公告)号：US11483590B2

    公开(公告)日：2022-10-25

    申请号：US17307339

    申请日：2021-05-04

    Applicant: ATEME

    Inventor： Thomas Guionnet ,  Sébastien Herbreteau

    IPC: H04N19/86 ,  H04N19/182 ,  G06T5/00 ,  G06T5/50

    Abstract: A method of method of processing an image includes: determining estimates of parameters of an auto-regressive, AR, parametric model of noise contained in the image, according to which a current noise pixel is computed as a combination of a linear combination of P previous noise pixels in a causal neighborhood of the current noise pixel weighted by respective AR model linear combination parameters (φ1, . . . , φP) with a generated noise sample corresponding to an additive Gaussian noise of AR model variance parameter (σ), generating a noise template of noise pixels based on the estimated AR model parameters, wherein the noise template is of a predetermined pixel size smaller than the pixel size of the image, determining an estimate (σP) of a variance of the noise template, and based on a comparison of the estimated variance (σP) with a predetermined threshold (Tσ), correcting the AR model variance parameter (σ).

    Spatio-temporal denoising of video content based on confidence indexes
    53.
    发明授权
    Spatio-temporal denoising of video content based on confidence indexes 有权

    公开(公告)号：US11166019B2

    公开(公告)日：2021-11-02

    申请号：US16507606

    申请日：2019-07-10

    Applicant: ATEME

    Inventor： Elie Mora

    IPC: H04N19/117 ,  H04N19/139 ,  H04N19/154 ,  H04N19/172 ,  H04N19/196 ,  H04N19/80 ,  G06T5/00 ,  G06T5/50

    Abstract: The disclosure relates to a method for processing the noise of a stream comprising a series of images, comprising spatial filtering of a current image In in order to obtain a spatially filtered image Sn; determining a motion vector for each block B of pixels of the image Sn, from a single image Sn-1; calculating a confidence index αn[B] for each block B of image In, from the motion vector determined for B; constructing a temporal filter from the calculated confidence indices αn[B] and applying the temporal filter to the current image In in order to obtain a temporally filtered image Tn; spatial filtering of the current image In in order to obtain a spatially filtered image Dn where Dn can be equal to Sn, and obtaining a temporally and spatially filtered image Rn by applying a function combining image Tn and image Dn.

    Dynamic range compression method
    54.
    发明授权
    Dynamic range compression method 有权

    公开(公告)号：US11138703B2

    公开(公告)日：2021-10-05

    申请号：US16958935

    申请日：2018-12-21

    Applicant: ATEME

    Inventor： Thomas Guionnet

    IPC: G06T5/00 ,  G06T5/50

    Abstract: Disclosed is a method for processing a video stream including a set of images liable to contain a transition effect, the method including the following steps: detecting a fade-type transition effect within the set of images of the video stream and, where appropriate, calculating minimum and maximum brightnesses LMIN and LMAX for each image of the set of images containing the fade; estimating minimum and maximum brightnesses EMIN and EMAX for all of the images not containing the detected transition effect; determining minimum and maximum brightnesses SMIN and SMAX for a standard dynamic range; calculating minimum and maximum brightnesses TMIN and TMAX depending on the minimum and maximum brightnesses LMIN, LMAX, EMIN, EMAX, SMIN and SMAX calculated and determined beforehand; transmitting the calculated minimum and maximum brightnesses TMIN and TMAX with a view to dynamic range compression.

    METHOD FOR IMAGE PROCESSING AND APPARATUS FOR IMPLEMENTING THE SAME
    55.
    发明申请
    METHOD FOR IMAGE PROCESSING AND APPARATUS FOR IMPLEMENTING THE SAME 审中-公开

    公开(公告)号：US20200296356A1

    公开(公告)日：2020-09-17

    申请号：US16815567

    申请日：2020-03-11

    Applicant: ATEME

    Inventor： Elie Mora ,  Abdoli Mohsen ,  Thomas Guionnet

    IPC: H04N19/103 ,  G06N7/00 ,  G06T7/11 ,  G06T7/90 ,  G06F17/16

    Abstract: A method of processing an image divided into a plurality of pixel blocks which are processed according to a processing sequence is provided, which comprises, for a current pixel block: determining an application area comprising a set of pixels in blocks preceding the current block in the processing sequence; performing a gradient analysis on at least one pixel of the application area; selecting at least two intra prediction video coding modes among a plurality of intra prediction video coding modes usable for processing the current pixel block, wherein at least one of the selected intra prediction video coding modes is selected based on the gradient analysis; determining a plurality of predictors of the current pixel block based on the at least two selected intra prediction video coding modes; and generating a predictor of the current pixel block based on the determined plurality of predictors.

    METHOD FOR DATA COMMUNICATION, AND SYSTEM FOR IMPLEMENTING THE METHOD
    56.
    发明申请
    METHOD FOR DATA COMMUNICATION, AND SYSTEM FOR IMPLEMENTING THE METHOD 审中-公开

    公开(公告)号：US20200242028A1

    公开(公告)日：2020-07-30

    申请号：US16774151

    申请日：2020-01-28

    Applicant: ATEME

    Inventor： Jean-Michel Capitan

    IPC: G06F12/06 ,  G06F13/16 ,  G06F13/42

    Abstract: A data communication method is proposed which comprises: configuring a first application interface coupled operationally to a data storage management interface, for defining a correspondence between an application data message and a memory addressing zone managed by the data storage management interface; generating a data storage command on the basis of the memory addressing zone and the application data message; and issuing, by the first application interface, the data storage command message to the data storage management interface for sending the application data message to a second application interface, through the data storage management interface.

    Hybrid denoising of images and videos based on interest metrics
    57.
    发明授权
    Hybrid denoising of images and videos based on interest metrics 有权

    公开(公告)号：US10706507B2

    公开(公告)日：2020-07-07

    申请号：US15850547

    申请日：2017-12-21

    Applicant: ATEME

    Inventor： Elie Gabriel Mora ,  Pierre Larbier

    IPC: G06K9/00 ,  G06T5/00 ,  G06T7/136 ,  G06T7/11

    Abstract: Disclosed is a method for processing noise in a digital image having multiple image portions, including: (a) Predefining: criteria of interest for denoising selected details of any image portion of the digital image; a plurality of possible processing procedures to be applied to an image portion in order to denoise the selected details, each processing procedure having an efficiency related to an associated complexity level, the possible processing procedures being ordered by increasing complexity level; (b) For each portion of the image: analyzing the image portion to quantify the presence of one or more of the selected details in the image portion, and calculating an overall interest of the image portion as a function of respective quantifications of the presences of the selected details; comparing the overall interest at the complexity levels, in order to launch the processing procedure having the complexity level corresponding to the calculated overall interest.

    Personalization of a video sequence
    58.
    发明授权
    Personalization of a video sequence 有权

    公开(公告)号：US12244843B2

    公开(公告)日：2025-03-04

    申请号：US17704219

    申请日：2022-03-25

    Applicant: ATEME

    Inventor： Thibaud Biatek ,  Mohsen Abdoli ,  Christophe Gisquet

    IPC: H04N19/105 ,  H04N19/109 ,  H04N19/119 ,  H04N19/139 ,  H04N19/159 ,  H04N19/167 ,  H04N19/176 ,  H04N19/46 ,  H04N19/52

    Abstract: A method for processing a current image of a set of images is proposed, which comprises, at a video processing device comprising a processor: determining a target pixel area in the current image; obtaining a hidden image, comprising a source pixel area, of the set of images; dividing the current image into blocks for an encoding of the blocks according to an encoding sequence; and for a block of the target pixel area: determining a motion vector pointing to a block of the source pixel area in the hidden image corresponding to the block of the target pixel area, and based on the motion vector, encoding the block of the target pixel area according to a temporal correlation prediction mode pursuant to which no pixel residual representing a difference between the block of the target pixel area and the corresponding block of the source pixel area is generated.

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