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1. WO2020063552 - METHOD AND APPARATUS FOR IMAGE FILTERING WITH ADAPTIVE MULTIPLIER COEFFICIENTS, AND TERMINAL DEVICE

Publication Number WO/2020/063552
Publication Date 02.04.2020
International Application No. PCT/CN2019/107390
International Filing Date 24.09.2019
IPC
H04N 19/82 2014.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
80Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation
82involving filtering within a prediction loop
H04N 19/80 2014.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
80Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation
CPC
H04N 19/80
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
80Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation
H04N 19/82
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
80Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation
82involving filtering within a prediction loop
Applicants
  • HUAWEI TECHNOLOGIES CO., LTD. [CN]/[CN]
Inventors
  • SETHURAMAN, Sriram
  • K, Nijil
Priority Data
20183103611625.09.2018IN
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPARATUS FOR IMAGE FILTERING WITH ADAPTIVE MULTIPLIER COEFFICIENTS, AND TERMINAL DEVICE
(FR) PROCÉDÉ ET APPAREIL DE FILTRAGE D’IMAGE AYANT DES COEFFICIENTS MULTIPLICATEURS ADAPTATIFS, ET DISPOSITIF TERMINAL
Abstract
(EN)
Provided are a method and an apparatus for filtering a set of samples of an image using a filter with adaptive multiplier coefficients, and a terminal device. The method includes: determining values of the multiplier coefficients of the filter, where the multiplier coefficients comprises a central coefficient and remaining coefficients, and for each remaining coefficient, a binary representation of an absolute value of said remaining coefficient with a predefined number L of digits is constrained as including at most N "ones", N equals to 2 or 3; and filtering the set of samples of the image with the filter. With the method or apparatus for image filtering with a filter having adaptive multiplier coefficients, the multiplication complexity during the filtering operation is lowered and the filtering efficiency is thus improved.
(FR)
La présente invention concerne un procédé et un appareil de filtrage d’un ensemble d’échantillons d’une image à l’aide d’un filtre ayant des coefficients multiplicateurs adaptatifs, et un dispositif terminal. Le procédé comprend : la détermination de valeurs des coefficients multiplicateurs du filtre, les coefficients multiplicateurs comprenant un coefficient central et des coefficients restants, et pour chaque coefficient restant, une représentation binaire d’une valeur absolue dudit coefficient restant avec un nombre prédéfini L de chiffres étant contrainte de comporter au plus N « un », N étant égal à 2 ou 3 ; et le filtrage de l’ensemble d’échantillons de l’image avec le filtre. Avec le procédé ou l’appareil de filtrage d’image avec un filtre ayant des coefficients multiplicateurs adaptatifs, la complexité des multiplications durant l’opération de filtrage est réduite et l’efficacité du filtrage est ainsi améliorée.
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