Exploring Fast and Flexible Zero‐Shot Low‐Light Image/Video Enhancement

Low‐light image/video enhancement is a challenging task when images or video are captured under harsh lighting conditions. Existing methods mostly formulate this task as an image‐to‐image conversion task via supervised or unsupervised learning. However, such conversion methods require an extremely l...

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Veröffentlicht in:Computer graphics forum Jg. 43; H. 7
Hauptverfasser: Han, Xianjun, Bao, Taoli, Yang, Hongyu
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Oxford Blackwell Publishing Ltd 01.10.2024
Schlagworte:
CCS Concepts
Computational photography
Computing methodologies → Image processing
Estimation
Illumination
Image enhancement
Light
Lighting
Unsupervised learning
Video data
ISSN:0167-7055, 1467-8659
Online-Zugang:Volltext
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Zusammenfassung:Low‐light image/video enhancement is a challenging task when images or video are captured under harsh lighting conditions. Existing methods mostly formulate this task as an image‐to‐image conversion task via supervised or unsupervised learning. However, such conversion methods require an extremely large amount of data for training, whether paired or unpaired. In addition, these methods are restricted to specific training data, making it difficult for the trained model to enhance other types of images or video. In this paper, we explore a novel, fast and flexible, zero‐shot, low‐light image or video enhancement framework. Without relying on prior training or relationships among neighboring frames, we are committed to estimating the illumination of the input image/frame by a well‐designed network. The proposed zero‐shot, low‐light image/video enhancement architecture includes illumination estimation and residual correction modules. The network architecture is very concise and does not require any paired or unpaired data during training, which allows low‐light enhancement to be performed with several simple iterations. Despite its simplicity, we show that the method is fast and generalizes well to diverse lighting conditions. Many experiments on various images and videos qualitatively and quantitatively demonstrate the advantages of our method over state‐of‐the‐art methods.
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ISSN:0167-7055
1467-8659
DOI:10.1111/cgf.15210