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Using optical flow for the detection of floating mines in ...

In the first Gulf War, unmoored floating mines proved to be a real hazard for shipping traffic. An automated system capable of detecting these and other free-floating small objects, using readily available sensors such as infra-red cameras, would prove to be a valuable mine-warfare asset, and could double as a collision avoidance mechanism, and a search-and-rescue aid. The noisy background ...

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Matched filter based detection of floating mines in IR ...

Sep 01, 2009  Ship-based automatic detection of small floating objects on an agitated sea surface remains a hard problem. Our main concern is the detection of floating mines, which proved a real threat to shipping in confined waterways during the first Gulf War, but applications include salvaging,search-and-rescue and perimeter or harbour defense. IR video was chosen for its day-and-night imaging

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Detection of floating mines in infrared sequences by ...

May 10, 2012  Automatic detection of oating mines by passive sensing is of major interest, yet remains a hard problem. In this paper, we propose an algorithm to detect them in infrared sequences, based on their geometry, provided by spatial derivatives. In infrared images, oating mines contrast with the sea due to the dierence of emissivity at low incidence angles: they form bright elliptical areas. Using ...

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Our main concern is the detection of floating mines, which proved a real threat to shipping in confined waterways during the first Gulf War, but applications include salvaging, search-and-rescue ...

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Design of an Underwater Mine Detection System

Mines can float on top of a body of water, rest on the sea floor, or be moored to the sea floor. Mines can also be fitted with technology for detecting certain signals that allow them to be detonated at a more precise location or by a specific target. For example, during World War II, mines were fitted with magnetic sensors in order to detect

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Real-Time Detection of River Surface Floating Object Based ...

Jun 02, 2021  Object detection is widely used in robot navigation, intelligent security and industrial detection, but it is rarely used in water conservancy industry. In the aspect of river and lake health management, it is important to clean out the floating objects in time, which prevents water pollution caused by the accumulation of the floating objects. The early methods of water surface object ...

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Detection of floating mines in infrared sequences by ...

Automatic detection of oating mines by passive sensing is of major interest, yet remains a hard problem. In this paper, we propose an algorithm to detect them in infrared sequences, based on their geometry, provided by spatial derivatives. In infrared images, oating mines contrast with the sea due to the dierence of emissivity at low incidence angles: they form bright elliptical areas.

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Detection and Classification of Small Moving Objects ...

Dec 10, 2019  TECHNOLOGY AREA(S): Info Systems, OBJECTIVE: Develop sensor technologies with object recognition capabilities that can identify and distinguish, count and geographically locate small objects (3 feet) floating in riverine environments using long wave infrared imaging polarimetry or a combination of radio, laser detection and ranging radar technologies for above and

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Matched filter based detection of floating mines in IR ...

Ship-based automatic detection of small floating objects on an agitated sea surface remains a hard problem. Our main concern is the detection of floating mines, which proved a real threat to shipping in confined waterways during the first Gulf War, but applications include salvaging,search-and-rescue and perimeter or harbour defense. IR video was chosen for its day-and-night imaging capability ...

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Detection of River Floating Objects

Based on artificial intelligence visual analysis technology, the algorithm can automatically identify the presence of chemical sewage, white garbage, people, buoys, boats and other floating objects in rivers, reminding people to timely control river pollution, or rescue personnel and boats.

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Automated quantification of floating wood pieces in rivers ...

Wood is an essential component of rivers and plays a significant role in ecology and morphology. It can be also considered as a risk factor in rivers due to its influence on erosion and flooding. Quantifying and characterizing wood fluxes in rivers during floods would improve our understanding of the key processes but is hindered by technical challenges. Among various techniques for monitoring ...

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Automated River Plastic Monitoring Using Deep Learning and ...

Jul 28, 2020  Existing methods for river plastic monitoring either lack scalability or depend on many assumptions. This study presented a proof of principle showing that an automated method based on deep learning is feasible and can enable obtaining reliable insights on floating macroplastics in rivers

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2 Mine Warfare: An Overview Oceanography and Mine ...

2. Mine Warfare: An Overview. The naval mine is an efficient force multiplier and is one of the most cost-effective weapons in the naval arsenal ( Table 2-1 ). Mines are small, easy to conceal, cheap to acquire, require virtually no maintenance, and can be easily and simply laid from almost any type of

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Effects of pollution on freshwater aquatic organisms ...

Sep 04, 2019  Mondal, Mukherjee, Biswas, and Kole determined and conducted an ecological risk assessment of 31 pesticides in aquatic systems of Hooghly river basin of West Bengal, India. The study found about 42% of the detected pesticides with highest loadings found in rivers, followed by sediment, pond, and tube well.

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Mines of the United States of America - NavWeaps

Used a protruding float made of cork, 3 feet (0.91 m) long, for inertia ignition - contact with a ship made the mine rotate relative to the float. Launched from trolley rails. Production started around 1915 and by 1917 the Portsmouth Navy Yard was manufacturing 140 of these per week with plans to ramp up production to 500 per week.

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Relational Abstract Domains for the Detection of Floating ...

Floating-PointIntervalAnalysis.Interval analysis is a non-relational Ab-stractInterpretation-basedanalysiswhere,ateachprogrampointandforeach variable, the set of its possible values during all executionsreaching this point is over-approximated by an interval. An abstract environment ‰] is a func-tion mapping each variable v 2Vf to an element ...

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Floating houses: an adaptation strategy for flood ...

examples of floating buildings all over the world (fig. 3). Figure 3: Seoul, floating amusement park opened 2011, Hangang river at night. 2.2 Examples in Germany The following figures represent examples of buildings in Germany floating on lakes of former opencast mines. Figure 4: Floating houses type “Ar-che” in the Lusatian landscape.

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Saline Water and Salinity - USGS

Sep 11, 2019  Saline water use in the United States in 2015. In today's world we are all more aware of the need to conserve freshwater.With the ever-growing demand for water by growing populations worldwide, it makes sense to try to find more uses for the abundant saline water supplies that exist, mainly in the oceans.As these pie charts of the Nation's water use show, about 16 percent of all water

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Improved YOLO Based Detection Algorithm for Floating ...

Various floating debris in the waterway can be used as one kind of visual index to measure the water quality. The traditional image processing method is difficult to meet the requirements of real-time monitoring of floating debris in the waterway due to the complexity of the environment, such as reflection of sunlight, obstacles of water plants, a large difference between the near and far ...

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Using optical flow for the detection of floating mines in ...

Oct 05, 2006  Oct 05, 2006  In the first Gulf War, unmoored floating mines proved to be a real hazard for shipping traffic. An automated system capable of detecting these and other free-floating small objects, using readily available sensors such as infra-red cameras, would prove to be a valuable mine-warfare asset, and could double as a collision avoidance mechanism, and a search-and-rescue aid.

Read More
Real-Time Detection of River Surface Floating Object Based ...

Jun 02, 2021  Jun 02, 2021  Object detection is widely used in robot navigation, intelligent security and industrial detection, but it is rarely used in water conservancy industry. In the aspect of river and lake health management, it is important to clean out the floating objects in time, which prevents water pollution caused by the accumulation of the floating objects. The early methods of water surface

Read More
Detection of floating mines in infrared sequences by ...

Automatic detection of oating mines by passive sensing is of major interest, yet remains a hard problem. In this paper, we propose an algorithm to detect them in infrared sequences, based on their geometry, provided by spatial derivatives. In infrared images, oating mines contrast with the sea due to the dierence of emissivity at low incidence angles: they form bright elliptical areas.

Read More
Using optical flow for the detection of floating mines in ...

Our main concern is the detection of floating mines, which proved a real threat to shipping in confined waterways during the first Gulf War, but applications include salvaging, search-and-rescue ...

Read More
Using optical flow for the detection of floating mines in ...

In the first Gulf War, unmoored floating mines proved to be a real hazard for shipping traffic. An automated system capable of detecting these and other free-floating small objects, using readily available sensors such as infra-red cameras, would prove to be a valuable mine-warfare asset, and could double as a collision avoidance mechanism, and a search-and-rescue aid.

Read More
Detection of River Floating Objects

Based on artificial intelligence visual analysis technology, the algorithm can automatically identify the presence of chemical sewage, white garbage, people, buoys, boats and other floating objects in rivers, reminding people to timely control river pollution, or rescue personnel and boats.

Read More
Automated River Plastic Monitoring Using Deep Learning and ...

Jul 28, 2020  Jul 28, 2020  Existing methods for river plastic monitoring either lack scalability or depend on many assumptions. This study presented a proof of principle showing that an automated method based on deep learning is feasible and can enable obtaining reliable insights on floating macroplastics in rivers around the world.

Read More
NAVAL MINES MINE HUNTING COUNTERMEASURES SWEEPING ...

Churchill promoted "Operation Royal Marine" in 1940 and again in 1944 where floating mines were put into the Rhine in France to float down the river, becoming active after a time calculated to be long enough to reach German territory. After World War I the drifting contact mine was banned, but was occasionally used during World War II.

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Locating mines in SAR imagery using change detection

Locating mines in SAR imagery using change detection methods Maria Tatesa,b, Nasser M. Nasrabadia, Heesung Kwona aU.S. Army Research Laboratory, 2800 Powder Mill Rd., Adelphi, MD 20783 bMorgan ...

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Naval mine - Wikipedia

A naval mine is a self-contained explosive device placed in water to damage or destroy surface ships or submarines.Unlike depth charges, mines are deposited and left to wait until they are triggered by the approach of, or contact with, any vessel.Naval mines can be used offensively, to hamper enemy shipping movements or lock vessels into a harbour; or defensively, to protect friendly vessels ...

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Detection of floating mines in infrared sequences by ...

May 10, 2012  May 10, 2012  Automatic detection of oating mines by passive sensing is of major interest, yet remains a hard problem. In this paper, we propose an algorithm to detect them in infrared sequences, based on their geometry, provided by spatial derivatives. In infrared images, oating mines contrast with the sea due to the dierence of emissivity at low incidence angles: they form bright

Read More
Automated quantification of floating wood pieces in rivers ...

Wood is an essential component of rivers and plays a significant role in ecology and morphology. It can be also considered as a risk factor in rivers due to its influence on erosion and flooding. Quantifying and characterizing wood fluxes in rivers during floods would improve our understanding of the key processes but is hindered by technical challenges.

Read More
Relational Abstract Domains for the Detection of Floating ...

Floating-PointIntervalAnalysis.Interval analysis is a non-relational Ab-stractInterpretation-basedanalysiswhere,ateachprogrampointandforeach variable, the set of its possible values during all executionsreaching this point is over-approximated by an interval. An abstract environment ‰] is a func-tion mapping each variable v 2Vf to an element ...

Read More
Floating houses: an adaptation strategy for flood ...

examples of floating buildings all over the world (fig. 3). Figure 3: Seoul, floating amusement park opened 2011, Hangang river at night. 2.2 Examples in Germany The following figures represent examples of buildings in Germany floating on lakes of former opencast mines. Figure 4: Floating houses type “Ar-che” in the Lusatian landscape.

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