Automatically low clouds or fog detection, based on two visibility meters and FSO

Pešek, Jiří; Fišer, Ondřej

doi:10.1109/comite.2013.6545048

Cited by 3 publications

(3 citation statements)

References 5 publications

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“…A method of estimating fog density based on the free space optical link attenuation, in real-life conditions this time, is presented in [ 69 ] by comparing the optical attenuation caused by bad weather conditions with the results obtained using standard meteorological equipment and with the ones obtained with a camera. The measurements are done in an area prone to fog, the observatory being at 836 m above sea level.…”

Section: Fog Detection and Visibility Estimation Methodsmentioning

confidence: 99%

“…The results presented in the paper are only preliminary ones, which prove that the process flow is working (data acquisition, transmission, and processing) but there are no results in different weather conditions (no fog, fog, dense fog) presented in the paper to prove the functionality of the system. A method of estimating fog density based on the free space optical link attenuation is presented in [69] and continued in [70] by using standard meteorological equipment. Brazda et al present a visibility meter composed of a camera and black and white targets used to measure the contrast.…”

Section: External Sensors and Systemsmentioning

confidence: 99%

“…A method of estimating fog density based on the free space optical link attenuation is presented in [ 69 ] and continued in [ 70 ] by using standard meteorological equipment. Brazda et al present a visibility meter composed of a camera and black and white targets used to measure the contrast.…”

Section: Sensors and Systems For Fog Detection And Visibility Enhancementmentioning

confidence: 99%

See 2 more Smart Citations

Visibility Enhancement and Fog Detection: Solutions Presented in Recent Scientific Papers with Potential for Application to Mobile Systems

Miclea

Ungureanu

Sandru

et al. 2021

Sensors

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In mobile systems, fog, rain, snow, haze, and sun glare are natural phenomena that can be very dangerous for drivers. In addition to the visibility problem, the driver must face also the choice of speed while driving. The main effects of fog are a decrease in contrast and a fade of color. Rain and snow cause also high perturbation for the driver while glare caused by the sun or by other traffic participants can be very dangerous even for a short period. In the field of autonomous vehicles, visibility is of the utmost importance. To solve this problem, different researchers have approached and offered varied solutions and methods. It is useful to focus on what has been presented in the scientific literature over the past ten years relative to these concerns. This synthesis and technological evolution in the field of sensors, in the field of communications, in data processing, can be the basis of new possibilities for approaching the problems. This paper summarizes the methods and systems found and considered relevant, which estimate or even improve visibility in adverse weather conditions. Searching in the scientific literature, in the last few years, for the preoccupations of the researchers for avoiding the problems of the mobile systems caused by the environmental factors, we found that the fog phenomenon is the most dangerous. Our focus is on the fog phenomenon, and here, we present published research about methods based on image processing, optical power measurement, systems of sensors, etc.

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Section: Fog Detection and Visibility Estimation Methodsmentioning

confidence: 99%

Section: External Sensors and Systemsmentioning

confidence: 99%

Section: Sensors and Systems For Fog Detection And Visibility Enhancementmentioning

confidence: 99%

See 1 more Smart Citation

Visibility Enhancement and Fog Detection: Solutions Presented in Recent Scientific Papers with Potential for Application to Mobile Systems

Miclea

Ungureanu

Sandru

et al. 2021

Sensors

View full text Add to dashboard Cite

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Techniques to Identify Image Objects Under Adverse Environmental Conditions: A Systematic Literature Review

Kaur,

Sharma,

Jain

2023

Internet of Things

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Laser and LIDAR in a System for Visibility Distance Estimation in Fog Conditions

Miclea

Dughir

Alexa

et al. 2020

Sensors

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Visibility is a critical factor for transportation, even if we refer to air, water, or ground transportation. The biggest trend in the automotive industry is autonomous driving, the number of autonomous vehicles will increase exponentially, prompting changes in the industry and user segment. Unfortunately, these vehicles still have some drawbacks and one, always in attention and topical, will be treated in this paper—visibility distance issue in bad weather conditions, particularly in fog. The way and the speed with which vehicles will determine objects, obstacles, pedestrians, or traffic signs, especially in bad visibility, will determine how the vehicle will behave. In this paper, a new experimental set up is featured, for analyzing the effect of the fog when the laser and LIDAR (Light Detection And Ranging) radiation are used in visibility distance estimation on public roads. While using our experimental set up, in the laboratory, the information offered by these measurement systems (laser and LIDAR) are evaluated and compared with results offered by human observers in the same fog conditions. The goal is to validate and unitarily apply the results regarding visibility distance, based on information arrives from different systems that are able to estimate this parameter (in foggy weather conditions). Finally, will be notifying the drivers in case of unexpected situations. It is a combination of stationary and of moving systems. The stationary system will be installed on highways or express roads in areas prone to fog, while the moving systems are, or can be, directly installed on the vehicles (autonomous but also non-autonomous).

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Automatically low clouds or fog detection, based on two visibility meters and FSO

Cited by 3 publications

References 5 publications

Visibility Enhancement and Fog Detection: Solutions Presented in Recent Scientific Papers with Potential for Application to Mobile Systems

Visibility Enhancement and Fog Detection: Solutions Presented in Recent Scientific Papers with Potential for Application to Mobile Systems

Techniques to Identify Image Objects Under Adverse Environmental Conditions: A Systematic Literature Review

Laser and LIDAR in a System for Visibility Distance Estimation in Fog Conditions

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