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1. WO2021026822 - IMAGE PROCESSING METHOD AND APPARATUS, IMAGE PHOTOGRAPHING DEVICE, AND MOBILE TERMINAL

Publication Number WO/2021/026822
Publication Date 18.02.2021
International Application No. PCT/CN2019/100597
International Filing Date 14.08.2019
IPC
H04N 5/235 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
222Studio circuitry; Studio devices; Studio equipment
225Television cameras
235Circuitry for compensating for variation in the brightness of the object
CPC
H04N 5/23229
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;
23229comprising further processing of the captured image without influencing the image pickup process
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 5/235
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
235Circuitry ; or methods; for compensating for variation in the brightness of the object ; , e.g. based on electric image signals provided by an electronic image sensor
H04N 5/2355
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
235Circuitry ; or methods; for compensating for variation in the brightness of the object ; , e.g. based on electric image signals provided by an electronic image sensor
2355by increasing the dynamic range of the final image compared to the dynamic range of the electronic image sensor, e.g. by adding correct exposed portions of short and long exposed images
Applicants
  • 深圳市大疆创新科技有限公司 SZ DJI TECHNOLOGY CO., LTD. [CN]/[CN]
Inventors
  • 李广 LI, Guang
  • 李静 LI, Jing
  • 郭浩铭 GUO, Haoming
Agents
  • 北京同立钧成知识产权代理有限公司 LEADER PATENT & TRADEMARK FIRM
Priority Data
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) IMAGE PROCESSING METHOD AND APPARATUS, IMAGE PHOTOGRAPHING DEVICE, AND MOBILE TERMINAL
(FR) APPAREIL ET PROCÉDÉ DE TRAITEMENT D'IMAGES, DISPOSITIF DE PHOTOGRAPHIE D'IMAGES ET TERMINAL MOBILE
(ZH) 图像处理方法、装置、图像拍摄设备及移动终端
Abstract
(EN)
Provided are an image processing method and apparatus, an image photographing device, and a mobile terminal. The method comprises: decomposing an image to be processed to obtain two or more layers of different frequency bands; determining exposure compensation parameters of each layer, and using the exposure compensation parameters to perform exposure compensation processing on each layer; and performing image reconstruction on the basis of each layer subjected to the exposure compensation processing to obtain a target image. According to the method, smoother exposure compensation can be performed on a global image, so that the brightness difference of the global image can be aligned, thereby greatly improving the photographic quality of the image.
(FR)
L'invention concerne un appareil et un procédé de traitement d'images, un dispositif de photographie d'images et un terminal mobile. Le procédé consiste à : décomposer une image à traiter pour obtenir au moins deux couches de bandes de fréquences différentes ; déterminer des paramètres de compensation d'exposition de chaque couche, et utiliser les paramètres de compensation d'exposition pour réaliser un traitement de compensation d'exposition sur chaque couche ; et réaliser une reconstruction d'image sur la base de chaque couche soumise au traitement de compensation d'exposition pour obtenir une image cible. Selon le procédé, une compensation d'exposition plus lisse peut être réalisée sur une image globale, de sorte que la différence de luminosité de l'image globale peut être alignée, améliorant ainsi considérablement la qualité photographique de l'image.
(ZH)
本申请实施例提供一种图像处理方法、装置、图像拍摄设备及移动终端,该方法包括:对待处理图像进行分解,得到两个以上不同频段的层,确定各层的曝光补偿参数,并使用曝光补偿参数对各层进行曝光补偿处理,基于曝光补偿处理后的各层进行图像重建,得到目标图像。该方法能够对于图像全局进行更加平滑的曝光补偿,从而能够对齐全局图像的亮度差异,进而极大提升图像的拍摄质量。
Also published as
CN201980012106.4
EP19934377.3
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