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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 Loy3Junhui Hou2Sam Kwong2Runmin Cong41BIIT Lab, Tianjin University2City University of Hong Kong3Nanyang Technological University4Beijing 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.

a low-light image as input and produces high-order curves as its output. These curves are then used for pixel-wise ad-justment on the dynamic range of the input to obtain an en-hanced image. The curveestimation is carefully formulated so that it maintains the range of the enhanced image and p-reserves the contrast of neighboring pixels ...

  Dynamics, Light

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