Global sparse gradient guided variational Retinex model for image enhancement

作者：

Highlights：

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• A new variational Retinex model is proposed which guided by a given gradient field.

• A global sparse gradient model is proposed to estimate the gradient of illumination.

• The new variational Retinex and GSG model compose a complete system GSG-VR.

摘要

•A new variational Retinex model is proposed which guided by a given gradient field.•A global sparse gradient model is proposed to estimate the gradient of illumination.•The new variational Retinex and GSG model compose a complete system GSG-VR.

论文关键词：Global sparse gradient,Retinex theory,Variational model,Image enhancement,Alternating minimization

论文评审过程：Received 28 April 2017, Revised 10 August 2017, Accepted 14 August 2017, Available online 24 August 2017, Version of Record 1 September 2017.

论文官网地址：https://doi.org/10.1016/j.image.2017.08.008