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1. WO2020139595 - REDUCTION OF BANDING ARTIFACTS IN IMAGE PROCESSING

Publication Number WO/2020/139595
Publication Date 02.07.2020
International Application No. PCT/US2019/066481
International Filing Date 16.12.2019
IPC
G06T 5/00 2006.1
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
5Image enhancement or restoration
H04N 5/335 2011.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
30Transforming light or analogous information into electric information
335using solid-state image sensors
CPC
G03B 9/08
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
9Exposure-making shutters; Diaphragms
08Shutters
H04N 5/20
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
14Picture signal circuitry for video frequency region
20Circuitry for controlling amplitude response
H04N 5/2254
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
222Studio circuitry; Studio devices; Studio equipment ; ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, TV cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
225Television cameras ; ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, camcorders, webcams, camera modules specially adapted for being embedded in other devices, e.g. mobile phones, computers or vehicles
2251Constructional details
2254Mounting of optical parts, e.g. lenses, shutters, filters or optical parts peculiar to the presence or use of an electronic image sensor
H04N 5/23216
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
222Studio circuitry; Studio devices; Studio equipment ; ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, TV cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
225Television cameras ; ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, camcorders, webcams, camera modules specially adapted for being embedded in other devices, e.g. mobile phones, computers or vehicles
232Devices for controlling television cameras, e.g. remote control ; ; Control of cameras comprising an electronic image sensor;
23216Control of parameters, e.g. field or angle of view of camera via graphical user interface, e.g. touchscreen
H04N 5/23238
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
222Studio circuitry; Studio devices; Studio equipment ; ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, TV cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
225Television cameras ; ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, camcorders, webcams, camera modules specially adapted for being embedded in other devices, e.g. mobile phones, computers or vehicles
232Devices for controlling television cameras, e.g. remote control ; ; Control of cameras comprising an electronic image sensor;
23238Control of image capture or reproduction to achieve a very large field of view, e.g. panorama
H04N 5/232933
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
222Studio circuitry; Studio devices; Studio equipment ; ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, TV cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
225Television cameras ; ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, camcorders, webcams, camera modules specially adapted for being embedded in other devices, e.g. mobile phones, computers or vehicles
232Devices for controlling television cameras, e.g. remote control ; ; Control of cameras comprising an electronic image sensor;
23293Electronic viewfinders
232933Graphical User Interface [GUI] specifically adapted for controlling image capture or setting capture parameters, e.g. using a touchscreen
Applicants
  • GOPRO, INC. [US]/[US]
Inventors
  • GOUNELLE, Romain
Agents
  • BASILE, JR., Andrew R.
  • KNIGHT, Michelle L.
Priority Data
16/231,77224.12.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) REDUCTION OF BANDING ARTIFACTS IN IMAGE PROCESSING
(FR) RÉDUCTION D'ARTEFACTS SOUS FORME DE BANDES DANS UN TRAITEMENT D'IMAGE
Abstract
(EN)
An image capture device may detect and repair banding artifacts in a video. The image capture device may include an image sensor and an image processor. The image sensor may capture a frame that includes a sinusoidal light waveform banding artifact. The image processor may detect a sinusoidal light waveform in the frame. The image processor may perform a sinusoidal regression. The image processor may obtain an inverted gain map. The image processor may apply the inverted gain map to the frame. The image processor may output the frame.
(FR)
Un dispositif de capture d'image peut détecter et réparer des artéfacts sous forme de bandes dans une vidéo. Le dispositif de capture d'image peut comprendre un capteur d'image et un processeur d'image. Le capteur d'image peut capturer une trame qui comprend un artéfact sous forme de bandes de forme d'onde lumineuse sinusoïdale. Le processeur d'image peut détecter une forme d'onde lumineuse sinusoïdale dans la trame. Le processeur d'image peut effectuer une régression sinusoïdale. Le processeur d'image peut obtenir un mappage de gain inversé. Le processeur d'image peut appliquer le mappage de gain inversé à la trame. Le processeur d'image peut délivrer en sortie la trame.
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