REPRESENTING SPATIAL AUDIO BY MEANS OF AN AUDIO SIGNAL AND ASSOCIATED METADATA
Granted: April 10, 2025
Application Number:
20250119698
There is provided encoding and decoding methods for representing spatial audio that is a combination of directional sound and diffuse sound. An exemplary encoding method includes inter alia creating a single- or multi-channel downmix audio signal by downmixing input audio signals from a plurality of microphones in an audio capture unit capturing the spatial audio; determining first metadata parameters associated with the downmix audio signal, wherein the first metadata parameters are…
LOCAL AMBIENT COMPENSATION SYSTEMS AND METHODS
Granted: April 10, 2025
Application Number:
20250118276
Novel methods and systems for locally adapting (modifying) an image to compensate for ambient conditions is realized. An adjusted cone response determining based on a minimum target cone response and a delta cone response. A target luminance is then calculated from a local adaptation pooling and the adjusted cone response. Then the image is modified by the target luminance to produce an adapted image.
QUANTUM DOTS AND PHOTOLUMINESCENT COLOR FILTER
Granted: April 10, 2025
Application Number:
20250118236
Image data is received for rendering an image on an image display to a viewer (402). The image data specifies a pixel value of the image for a pixel of the image display to render. The pixel value for the pixel includes multiple component pixel values corresponding to multiple color components of a color space. A color gamut locational value of the pixel value is computed based on two or more component pixel values in the multiple component pixel values of the pixel value specified for…
GENERATING HDR IMAGE FROM CORRESPONDING CAMERA RAW AND SDR IMAGES
Granted: April 10, 2025
Application Number:
20250117904
Guided filtering is applied, with a camera raw image as a guidance image, to a first image to generate an intermediate image. A dynamic range mapping is performed on the intermediate image to generate a second image of a different dynamic range. The second image is used to generate specific local reshaping function index values for selecting specific local reshaping functions. The specific local reshaping functions are applied to the second image to generate a locally reshaped image.
BYGENERATION OF HYBRID IMAGES FOR USE IN CAPTURING PERSONALIZED PLAYBACK-SIDE CONTEXT INFORMATION OF A USER
Granted: April 10, 2025
Application Number:
20250117885
A method may include generating a hybrid image associated with a first interpretation corresponding to a first value of a media parameter and a second interpretation corresponding to a second value of the media parameter. The hybrid image may include a first visibility ratio between the first interpretation and the second interpretation. The method may include refining the hybrid image to create a refined hybrid image that includes a second visibility ratio different than the first…
DEPTH DIFFERENCES IN PLACE OF MOTION VECTORS
Granted: April 3, 2025
Application Number:
20250113057
Input texture images are received. Depth maps are determined for the input texture images. Each depth map in the depth maps includes depth values of pixels represented in a corresponding input texture image in the input texture images. Depth difference maps are generated from the depth maps. The depth difference maps include at least one depth difference map that is generated from two successive depth maps in the depth maps. A video signal encoded with a compressed version of the input…
NEURAL NETWORKS FOR HIGH DYNAMIC RANGE VIDEO SUPER-RESOLUTION
Granted: April 3, 2025
Application Number:
20250111475
Methods and systems for the super resolution of high dynamic range (HDR) video are described. Given a sequence of video frames, a current frame and two or more neighboring frames are processed by a neural-network (NN) feature extraction module, followed by a NN upscaling module, and a NN reconstruction module. In parallel, the current frame is upscaled using traditional up-sampling to generate an intermediate up-sampled frame. The output of the reconstruction module is added to the…
ENHANCING REMOTE VISUAL INTERACTION
Granted: April 3, 2025
Application Number:
20250111470
A communication client device operated by a first user in a communication session receives a viewing direction tracking data portion indicating a view direction of a second user in the communication session. It is determined that the view direction of the second user is towards a third user at a first time point in the communication session. The view direction of the second user is used to modify a pre-adapted visual depiction of the second user into an adapted visual depiction of the…
BETA SCALE DYNAMIC DISPLAY MAPPING
Granted: March 27, 2025
Application Number:
20250106410
An input image to be coded into a video signal and a target image are received. The input image and the target image depict same visual content. One or more beta scaling method indicators and one or more sets of one or more beta scale parameters are generated. The one or more beta scaling method indicators indicate one or more beta scaling methods that use the one or more sets of beta scale parameters to perform beta scaling operations on the input image to generate a reconstructed image…
REVERBERATION GENERATION FOR HEADPHONE VIRTUALIZATION
Granted: March 27, 2025
Application Number:
20250106576
The present disclosure relates to reverberation generation for headphone virtualization. A method of generating one or more components of a binaural room impulse response (BRIR) for headphone virtualization is described. In the method, directionally-controlled reflections are generated, wherein directionally-controlled reflections impart a desired perceptual cue to an audio input signal corresponding to a sound source location. Then at least the generated reflections are combined to…
POST-PROCESSING GAINS FOR SIGNAL ENHANCEMENT
Granted: March 27, 2025
Application Number:
20250104728
A method, an apparatus, and logic to post-process raw gains determined by input processing to generate post-processed gains, comprising using one or both of delta gain smoothing and decision-directed gain smoothing. The delta gain smoothing comprises applying a smoothing filter to the raw gain with a smoothing factor that depends on the gain delta: the absolute value of the difference between the raw gain for the current frame and the post-processed gain for a previous frame. The…
ACOUSTIC ENVIRONMENT SIMULATION
Granted: March 27, 2025
Application Number:
20250104720
Encoding/decoding an audio signal having one or more audio components, wherein each audio component is associated with a spatial location. A first audio signal presentation (z) of the audio components, a first set of transform parameters (w(f)), and signal level data (?2) are encoded and transmitted to the decoder. The decoder uses the first set of transform parameters (w(f)) to form a reconstructed simulation input signal intended for an acoustic environment simulation, and applies a…
SIGNAL RESHAPING FOR HIGH DYNAMIC RANGE SIGNALS
Granted: March 20, 2025
Application Number:
20250097480
In a method to improve backwards compatibility when decoding high-dynamic range images coded in a wide color gamut (WCG) space which may not be compatible with legacy color spaces, hue and/or saturation values of images in an image database are computed for both a legacy color space (say, YCbCr-gamma) and a preferred WCG color space (say, IPT-PQ). Based on a cost function, a reshaped color space is computed so that the distance between the hue values in the legacy color space and rotated…
DOWNLOAD CONTROL IN MULTI-SERVER COMMUNICATION SYSTEM
Granted: March 20, 2025
Application Number:
20250097287
Apparatuses and methods for data traffic management in multi-source content delivery are described. The apparatus includes a downloader and a controller. The downloader is coupled to servers via communication links. The controller is configured to determine initial download requests for the servers based on predetermined information about a quality of the links. The controller is also configured to send the initial download requests to the servers with the downloader. The controller is…
LOW LATENCY AUDIO FILTERBANK WITH IMPROVED FREQUENCY RESOLUTION
Granted: March 20, 2025
Application Number:
20250096778
A filterbank, suitable for modifying audio signals with dynamic gains in each band, is constructed so that the perceived latency is small, while a larger group delay is applied at low frequencies to enable higher frequency resolution in the lower frequency bands. The higher group delay at low frequencies is achieved by inserting an all-pass filter into the reconstructed filter response.
METHOD AND APPARATUS FOR ENCODING AND DECODING AN HOA REPRESENTATION
Granted: March 20, 2025
Application Number:
20250095661
The present invention relates to methods and apparatus for encoding an HOA signal representation (c(t)) of a sound field having an order of N and a number O=(N+1)2 of coefficient sequences to a mezzanine HOA signal representation (wMEZZ(t)). The present invention further relates to methods and apparatus for decoding a reconstructed HOA signal representation from the mezzanine HOA signal representation.
SPATIAL CODING OF HIGHER ORDER AMBISONICS FOR A LOW LATENCY IMMERSIVE AUDIO CODEC
Granted: March 20, 2025
Application Number:
20250095660
Described herein is a method of encoding Higher Order Ambisonics, HOA, audio, the method including: receiving an input HOA audio signal having more than four Ambisonics channels; encoding the HOA audio signal using a SPAR coding framework and a core audio encoder; and providing the encoded HOA audio signal to a downstream device, the encoded HOA audio signal including core encoded SPAR downmix channels and encoded SPAR metadata. Further described are a method of decoding Higher Order…
NEURAL NETWORKS FOR DYNAMIC RANGE CONVERSION AND DISPLAY MANAGEMENT OF IMAGES
Granted: March 20, 2025
Application Number:
20250095125
Methods and systems for dynamic range conversion and display mapping of standard dynamic range (SDR) images onto high dynamic range (HDR) displays are described. Given an SDR input image, a processor generates an intensity (luminance) image and optionally a base layer image and a detail layer image. A first neural network uses the intensity image to predict statistics of the SDR image in a higher dynamic range. These predicted statistics together with the original image statistics of the…
METHOD FOR ENCODING AND DECODING IMAGE USING ADAPTIVE DEBLOCKING FILTERING, AND APPARATUS THEREFOR
Granted: March 13, 2025
Application Number:
20250088674
Disclosed is an encoding/decoding method and apparatus related to adaptive deblocking filtering. There is provided an image decoding method performing adaptive filtering in inter-prediction, the method including: reconstructing, from a bitstream, an image signal including a reference block on which block matching is performed in inter-prediction of a current block to be encoded; obtaining, from the bitstream, a flag indicating whether the reference block exists within a current picture…
AUDIO PROCESSING IN IMMERSIVE AUDIO SERVICES
Granted: March 13, 2025
Application Number:
20250088816
The disclosure herein generally relates to capturing, acoustic pre-processing, encoding, decoding, and rendering of directional audio of an audio scene. In particular, it relates to a device adapted to modify a directional property of a captured directional audio in response to spatial data of a microphone system capturing the directional audio. The disclosure further relates to a rendering device configured to modify a directional property of a received directional audio in response to…
