Abstract
Multiple layers block overlapped histogram equalization (MLBOHE) is a classic image enhancement method. However, median filter is used in it to reduce noises which cause the degeneration of the local information. Moreover, the hidden details are not revealed effectively during the image fusion processes. To solve these drawbacks, an adaptive image enhancement method using contrast limitation is proposed in this paper. Based on MLBOHE, the proposed method employs a contrast limited method to suppress noises before BOHE is performed in each layer sub-blocks. Then an improved image fusion mode is applied to adaptively merge the multilayered BOHE images. The way to obtain the fusion weights by this fusion mode is according to the entropy value of each layer sub-blocks. In addition, four Image Quality Measures (IQMs), namely peak signal-to-noise ratio (PSNR), image clarity, contrast measure (EME) and feature similarity index metric (FSIM), are used to analyze the effectiveness of the proposed method. Simulation results show that the proposed method has high performance in suppressing noises and displaying more trustworthy details. Besides, this method outperforms the existing methods in weakening the excessive enhancement for low illumination and foggy images.










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Abbreviations
- BOHE:
-
Block overlapped histogram equalization
- MLBOHE:
-
Multiple layers block overlapped histogram equalization
- IQMs:
-
Image quality measures
- PSNR:
-
Peak signal-to noise ratio
- EME:
-
Image contrast measure
- FSIM:
-
Feature similarity index
- HE:
-
Histogram equalization
- CDF:
-
Cumulative distribution function
- LHE:
-
Local histogram equalization
- POSHE:
-
Partially overlapped sub-block histogram equalization
- NBOHE:
-
Non-block overlapped histogram equalization
- CLAHE:
-
Contrast limited adaptive histogram equalization
- BBHE:
-
Brightness preserving bi- histogram equalization
- DTOHE:
-
Dominant orientation-based texture histogram equalization
- ABMHE:
-
Adjacent blocks-based modification for local histogram equalization
- MSE:
-
Mean square error
- LoG:
-
Laplacian of Gaussian
- PC:
-
Phase congruency
- GM:
-
Gradient magnitude
- HVS:
-
Human visual system
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Acknowledgements
The authors wish to thank the reviewers for their valuable suggestions.
Funding
This work was supported in part by the National Natural Science Foundation of China (No. 51604038, No.51541408), Laboratory for Marine Geology (MGQNLMKF201705), Wenhai Program of Qingdao National Laboratory for Marine Science and Technology (2017WHZZB0401), Research Fund for the Taishan Scholar Project of Shandong Province (TSPD20161007), Department of Education in Hubei Province (D20141303). The excellent doctoral dissertation cultivation project of Yangtze University.
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PT created the methodology, wrote the software, performed the experiments and wrote original manuscript; QF helped with the algorithm, analyzed the experimental data, and revised the manuscript; YP assisted in the experiments. MC made critical revision to the paper; AW. collected the data and helped to analyze the experimental data.
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Tao, P., Pei, Y., Celenk, M. et al. Adaptive image enhancement method using contrast limitation based on multiple layers BOHE. J Ambient Intell Human Comput 11, 5031–5043 (2020). https://doi.org/10.1007/s12652-020-01810-9
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DOI: https://doi.org/10.1007/s12652-020-01810-9