Transcription of Zero-Reference Deep Curve Estimation for Low-Light Image ...
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Zero-Reference Deep Curve Estimation for Low-Light Image EnhancementChunle Guo1,2 Chongyi Li1,2 Jichang Guo1 Chen Change Loy3 Junhui Hou2 Sam Kwong2 Runmin Cong41 BIIT Lab, Tianjin University2 City University of Hong Kong3 Nanyang Technological University4 Beijing Jiaotong paper presents a novel method, Zero-ReferenceDeep Curve Estimation (Zero-DCE), which formulates lightenhancement as a task of Image -specific Curve estimationwith a deep network. Our method trains a lightweight deepnetwork, DCE-Net, to estimate pixel-wise and high-ordercurves for dynamic range adjustment of a given Image . Thecurve Estimation is specially designed, considering pixelvalue range, monotonicity, and differentiability. Zero-DCEis appealing in its relaxed assumption on reference images, , it does not require any paired or unpaired data dur-ing training.
cally decomposes an image into reflectance and illumina-tion. The reflectance component is commonly assumed to be consistent under any lighting conditions; thus, light enhancement is formulated as an illumination estimation problem. Building on the Retinex theory, several meth-ods have been proposed. Wang et al. [29] designed a
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