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Accelerated haze removal for a single image by dark channel prior Research Articles

Bo-xuan YUE, Kang-ling LIU, Zi-yang WANG, Jun LIANG

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 8,   Pages 1109-1118 doi: 10.1631/FITEE.1700148

Abstract: Haze scatters light transmitted in the air and reduces the visibility of images. Dealing with haze is still a challenge for image processing applications nowadays. For the purpose of haze removal, we propose an accelerated dehazing method based on single pixels. Unlike other methods based on regions, our method estimates the transmission map and atmospheric light for each pixel independently, so that all parameters can be evaluated in one traverse, which is a key to acceleration. Then, the transmission map is bilaterally filtered to restore the relationship between pixels. After restoration via the linear hazy model, the restored images are tuned to improve the contrast, value, and saturation, in particular to offset the intensity errors in different channels caused by the corresponding wavelengths. The experimental results demonstrate that the proposed dehazing method outperforms the state-of-the-art dehazing methods in terms of processing speed. Comparisons with other dehazing methods and quantitative criteria (peak signal-to-noise ratio, detectable marginal rate, and information entropy difference) are introduced to verify its performance.

Keywords： Haze removal     Dark channel prior     Hazy image model     Bilateral filtering    

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Automatic image enhancement by learning adaptive patch selection None

Na LI, Jian ZHAN

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 2,   Pages 206-221 doi: 10.1631/FITEE.1700125

Abstract: study, we propose an automatic image enhancement method based on adaptive patch selection using both darkThe patch size used for channel extraction is selected automatically by thresholding a contrast feature

Keywords： Image enhancement     Contrast enhancement     Dark channel     Bright channel     Adaptive patch based processing    

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Evaluating the impact of sulfamethoxazole on hydrogen production during dark anaerobic sludge fermentation

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 1, doi: 10.1007/s11783-023-1607-2

Abstract:

● SMX promotes hydrogen production from dark anaerobic sludge fermentation

Keywords： Sulfamethoxazole     Hydrogen production     Dark anaerobic fermentation     Waste activated sludge    

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The prior rules of designing Ti

Yingying Jian, Danyao Qu, Lihao Guo, Yujin Zhu, Chen Su, Huanran Feng, Guangjian Zhang, Jia Zhang, Weiwei Wu, Ming-Shui Yao

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 3,   Pages 505-517 doi: 10.1007/s11705-020-2013-y

Abstract: Working temperature, sensitivity, and selectivity are some of the characteristics of the applied gas sensors. How to design and fabricate an ideal gas sensor working at room temperature is still challenging and attracting lots of interest. Two-dimensional (2D) materials with ultra-thin structure have been demonstrated as a family of ideal candidates to achieve this goal. Among them, Ti C T MXene, a kind of layered sheet synthesized by selectively etching MAX phases materials, shows remarkable potential to be the sensitive materials solely or in a composite. However, their designing rules are still lacking critical thinking from the viewpoint of the intrinsic property of Ti C T MXene based materials. In this article, two critical features, i.e., the thickness of the sensitive materials, and the scope of the analytes, are elaborated towards Ti C T MXene based gas sensors after characterizing the performance of sensing reducing gases (NH and CO) and oxidizing gas (NO ). First, the thinner the Ti C T MXene sensitive layer, the better the sensitivity. Second, the Ti C T MXene based gas sensor is not suitable for strong and moderate oxidation gas due to its ease of oxidation. These two rules are demonstrated, and could be considered with priority both in the future researches and practical applications.

Keywords： MXene based sensor     prior     reducing gases     oxidizing gases    

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Improved energy recovery from dark fermented cane molasses using microbial fuel cells

Soumya Pandit, Balachandar G, Debabrata Das

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 1,   Pages 43-54 doi: 10.1007/s11705-014-1403-4

Abstract: The results show that integrating a MFC with dark fermentation is a promising way to utilize the substrate

Keywords： dark fermentation     biohydrogen     microbial fuel cell     volatile fatty acid     anolyte    

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Vacuum promotes metabolic shifts and increases biogenic hydrogen production in dark fermentation systems

Haifa RAJHI,Daniel PUYOL,Mirna C. MARTÍNEZ,Emiliano E. DÍAZ,José L. SANZ

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 3,   Pages 513-521 doi: 10.1007/s11783-015-0777-y

Abstract: Both substrate and partial gas pressures are crucial factors affecting dark fermentation metabolic pathwaysbiogenic hydrogen production from a real wastewater, which opens possibilities for future application of dark

Keywords： dark fermentation     biohydrogen     wastewaters     vacuum    

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Biological hydrogen production from organic wastewater by dark fermentation in China: Overview and prospects

Nanqi REN, Wanqian GUO, Bingfeng LIU, Guangli CAO, Jing TANG

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 4,   Pages 375-379 doi: 10.1007/s11783-009-0148-7

Abstract: Biological hydrogen production by dark fermentation is an important part of biological hydrogen productionIn this paper, the research status on dark fermentative hydrogen production in China was summarized andMoreover, some prospecting coupling processes with dark fermentation of hydrogen production were also

Keywords： biological hydrogen production     dark fermentation     overview     prospects    

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Analysis of behavior of melted dark green silty soil

TANG Yiqun, ZHOU Nianqing, YANG Ping, SHEN Feng

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 3,   Pages 242-245 doi: 10.1007/s11709-008-0022-x

Abstract: The behavior of dark green silty soil of the 6th storey is studied by means of scanning electron microscopymechanic characteristics of common soil and those of melted soil are presented and their influences on dark

Keywords： electron microscopy     mechanic     microscopic perspective     addition     dynamic    

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Host protection against Omicron BA.2.2 sublineages by prior vaccination in spring 2022 COVID-19 outbreak

Frontiers of Medicine 2023, Volume 17, Issue 3,   Pages 562-575 doi: 10.1007/s11684-022-0977-3

Abstract: pathophysiological features of Omicron BA.2.2 sublineages and demonstrates significant protection conferred by prior

Keywords： SARS-CoV-2     COVID-19     host response     bronchoalveolar lavage fluid (BALF)    

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Prior information based channel estimation for millimeter-wave massive MIMO vehicular communications Research Articles

Zhao Yi, Weixia Zou, Xuebin Sun,yz17tx@bupt.edu.cn,zwx0218@bupt.edu.cn

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 6,   Pages 777-789 doi: 10.1631/FITEE.2000515

Abstract: traditional real-time strategies are unavailable because vehicle mobility leads to a fast variation mmWave channelSpecifically, by considering a fast-moving vehicle secnario, a corresponding mathematical model for a fast channelbase station and each mobile user and the determined direction-of-arrival are used to predict the channelprior information (PI).Finally, by exploiting the PI and the characteristics of the channel, the channel is estimated.

Keywords： 大规模多入多出；毫米波；信道估计；车辆通信；时变    

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A cellphone-based colorimetric multi-channel sensor for water environmental monitoring

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 12, doi: 10.1007/s11783-022-1590-z

Abstract:

● A cellphone-based colorimetric multi-channel sensor for in-field

Keywords： Colorimetric analysis     Multi-channel sensor     Cellphone     Water quality indexes     Environmental monitoring    

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Analysis of nonlinear channel friction inverse problem

CHENG Weiping, LIU Guohua

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 2,   Pages 205-210 doi: 10.1007/s11709-007-0024-0

Abstract: decomposition (SVD) for general inverse matrices and the optimization algorithm are used to solve the channel

Keywords： singular     SVD     second-order     covariance     Theoretical    

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Entity and relation extraction with rule-guided dictionary as domain knowledge

Frontiers of Engineering Management   Pages 610-622 doi: 10.1007/s42524-022-0226-0

Abstract: To address the problems above, this paper first introduced prior knowledge composed of domain dictionaries

Keywords： entity extraction     relation extraction     prior knowledge     domain rule    

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Improvement of solidification model and analysis of 3D channel blockage with MPS method

Frontiers in Energy 2021, Volume 15, Issue 4,   Pages 946-958 doi: 10.1007/s11708-021-0754-z

Abstract: In a severe accident of a nuclear power reactor, coolant channel blockage by solidified molten core debrisIn the study described in this paper, a novel solidification model for analyzing melt flowing channelFurthermore, 3-D channel blockage analyses of a boiling water reactor (BWR) fuel support piece have beenThe results show that a partial channel blockage develops from the vicinity of the speed limiter, whichdoes not fully develop into a complete channel blockage, but still diverts the incoming melt flow that

Keywords： boiling water reactor (BWR)     severe accident     channel blockage     moving particle semi-implicit (MPS) method    

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Experimental investigation of liquid metal alloy based mini-channel heat exchanger for high power electronic

Manli LUO, Jing LIU

Frontiers in Energy 2013, Volume 7, Issue 4,   Pages 479-486 doi: 10.1007/s11708-013-0277-3

Abstract: this paper is dedicated to clarify the heat transfer behaviors of the liquid metal flowing in mini-channelwere all cooled down by these three heat dissipation apparatuses and the exchanger with the smallest channelconstant heat flux in the hydrodynamically developed and thermally developing region in the rectangular channelThis study is expected to provide valuable reference for designing future liquid metal based mini-channel

Keywords： heat exchanger     liquid metal     mini-channel     heat dissipation     heat transfer coefficient    

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Title Author Date Type Operation

Accelerated haze removal for a single image by dark channel prior

Bo-xuan YUE, Kang-ling LIU, Zi-yang WANG, Jun LIANG

Journal Article

Automatic image enhancement by learning adaptive patch selection

Na LI, Jian ZHAN

Journal Article

Evaluating the impact of sulfamethoxazole on hydrogen production during dark anaerobic sludge fermentation

Journal Article

The prior rules of designing Ti

Yingying Jian, Danyao Qu, Lihao Guo, Yujin Zhu, Chen Su, Huanran Feng, Guangjian Zhang, Jia Zhang, Weiwei Wu, Ming-Shui Yao

Journal Article

Improved energy recovery from dark fermented cane molasses using microbial fuel cells

Soumya Pandit, Balachandar G, Debabrata Das

Journal Article

Vacuum promotes metabolic shifts and increases biogenic hydrogen production in dark fermentation systems

Haifa RAJHI,Daniel PUYOL,Mirna C. MARTÍNEZ,Emiliano E. DÍAZ,José L. SANZ

Journal Article

Biological hydrogen production from organic wastewater by dark fermentation in China: Overview and prospects

Nanqi REN, Wanqian GUO, Bingfeng LIU, Guangli CAO, Jing TANG

Journal Article

Analysis of behavior of melted dark green silty soil

TANG Yiqun, ZHOU Nianqing, YANG Ping, SHEN Feng

Journal Article

Host protection against Omicron BA.2.2 sublineages by prior vaccination in spring 2022 COVID-19 outbreak

Journal Article

Prior information based channel estimation for millimeter-wave massive MIMO vehicular communications

Zhao Yi, Weixia Zou, Xuebin Sun,yz17tx@bupt.edu.cn,zwx0218@bupt.edu.cn

Journal Article

A cellphone-based colorimetric multi-channel sensor for water environmental monitoring

Journal Article

Analysis of nonlinear channel friction inverse problem

CHENG Weiping, LIU Guohua

Journal Article

Entity and relation extraction with rule-guided dictionary as domain knowledge

Journal Article

Improvement of solidification model and analysis of 3D channel blockage with MPS method

Journal Article

Experimental investigation of liquid metal alloy based mini-channel heat exchanger for high power electronic

Manli LUO, Jing LIU

Journal Article