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Sensors 2016, 16(6), 832; doi:10.3390/s16060832

Realistic Image Rendition Using a Variable Exponent Functional Model for Retinex

1
Key Laboratory of Photoelectronic Imaging Technology and System, Ministry of Education of China, Beijing Institute of Technology, Beijing 100081, China
2
School of Science, Communication University of China, Beijing 100024, China
*
Author to whom correspondence should be addressed.
Academic Editor: Vittorio M. N. Passaro
Received: 17 February 2016 / Revised: 11 May 2016 / Accepted: 16 May 2016 / Published: 7 June 2016
(This article belongs to the Section Physical Sensors)
View Full-Text   |   Download PDF [6712 KB, uploaded 7 June 2016]   |  

Abstract

The goal of realistic image rendition is to recover the acquired image under imperfect illuminant conditions, where non–uniform illumination may degrade image quality with high contrast and low SNR. In this paper, the assumption regarding illumination is modified and a variable exponent functional model for Retinex is proposed to remove non–uniform illumination and reduce halo artifacts. The theoretical derivation is provided and experimental results are presented to illustrate the effectiveness of the proposed model. View Full-Text
Keywords: Retinex; variable exponent functional; illumination removal; halo artifact; image rendition Retinex; variable exponent functional; illumination removal; halo artifact; image rendition
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Dou, Z.; Gao, K.; Zhang, B.; Yu, X.; Han, L.; Zhu, Z. Realistic Image Rendition Using a Variable Exponent Functional Model for Retinex. Sensors 2016, 16, 832.

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