Automatic mine detection by textural analysis of COTS sidescan sonar imagery

Blondel, Philippe

doi:10.1080/01431160050144983

Cited by 37 publications

(17 citation statements)

References 6 publications

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“…So far, quick and automated object identification is only successful when the objects are sitting on homogeneous, low backscatter substrates (e.g., fine sand) [14]. Object identification becomes difficult and even impossible close to the nadir and also when the backscatter is unclear (e.g., stones on mixed sediment).…”

Section: Discussionmentioning

confidence: 99%

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Detection of Stones in Marine Habitats Combining Simultaneous Hydroacoustic Surveys

Papenmeier

Hass

2018

Geosciences

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Exposed stones in sandy sublittoral environments are hotspots for marine biodiversity, especially for benthic communities. The detection of single stones is principally possible using sidescan-sonar (SSS) backscatter data. The data resolution has to be high to visualize the acoustic shadows of the stones. Otherwise, stony substrates will not be differentiable from other high backscatter substrates (e.g., gravel). Acquiring adequate sonar data and identifying stones in backscatter images is time consuming because it usually requires visual-manual procedures. To develop a more efficient identification and demarcation procedure of stone fields, sidescan sonar and parametric echo sound data were recorded within the marine protected area of "Sylt Outer Reef" (German Bight, North Sea). The investigated area (~5.900 km 2 ) is characterized by dispersed heterogeneous moraine and marine deposits. Data from parametric sediment echo sounder indicate hyperbolas at the sediment surface in stony areas, which can easily be exported. By combining simultaneous recorded low backscatter data and parametric single beam data, stony grounds were demarcated faster, less complex and reproducible from gravelly substrates indicating similar high backscatter in the SSS data.

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Section: Discussionmentioning

confidence: 99%

“…Therefore, automatic detection of objects like stones in sidescan sonar backscatter data is difficult. It basically works out for objects (e.g., mines) lying on homogeneous backscatter grounds [14]. In principle, manual detection is possible but it requires time and high resolution of backscatter to detect small objects.…”

Section: Introductionmentioning

confidence: 99%

Detection of Stones in Marine Habitats Combining Simultaneous Hydroacoustic Surveys

Papenmeier

Hass

2018

Geosciences

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“…The fundamental criterion for the detectability of a specific object is that if the object can provide sufficient backscattered acoustic energy to the receiving transducers and if the ambient background backscatter is both uniform and low, then the object can be detected as a sonar target. Theoretically, the backscattering is affected, in decreasing importance, by the geometry of the sensor-target system (relative angle of ensonification), the morphological characteristics of the surface (e.g., micro-scale roughness) and by its intrinsic nature (composition, density, impedance, relative importance of volume and surface reverberation) (BLONDEL; MURTON, 1997;BLONDEL, 2000;LURTON, 2002;TIAN, 2008). Acoustic impedance (the product of density, r and compressional wave velocity, c) can be used to define the reflection coefficient, R for normal incidence, which is a measure of the strength of the reflection (KINSLER, et.…”

Section: Side-scan Sonar Techniquesmentioning

confidence: 99%

Side-scan sonar techniques for the characterization of physical properties of artificial benthic habitats

Tian

2011

Braz. j. oceanogr.

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A B S T R A C TSide-scan sonar observations conducted at Mito artificial habitat site in the southwest coast off Taiwan, documented the locations of both concrete cubic blocks (more than 10,000 units) and scrapped steel boats (39 units) deployed previously. Based on their geographic locations, the concrete cubic artificial reefs could be grouped into 14 reef sets. About 30% of the reefs were deployed out of the promulgated site area. For the purpose of artificial habitat site identification and fishery resources management, a database structure was designed to accommodate types and positions of reefs, information of reef sets, bathymetric contours, textures of bottom sediments and geomorphological characteristics. The effectiveness of Mito artificial habitat site was evaluated to be positive after the deployment of both concrete block reefs and steel boat reefs. R E S U M OObservações com sonar de varredura lateral ao largo de Mito na costa sudoeste de Taiwan, revelou a localização de mais de 10.000 blocos de concreto e 39 embarcações de ferro assentados previamente como recifes artificiais. Com base nas imagens obtidas, os cubos de concreto formam 14 grupos separados. Cerca de 30% das unidades de concreto foram assentadas fora das áreas previstas. Para a identificacão correta dos recifes artificiais e manejo adequado dos recursos pesqueiros, foi organizada uma base de dados com informações sobre forma, materiais e posição, e arranjo espacial das unidades recifais, bem como dados de batimetria, natureza do sedimento do fundo e geomorfologia. A eficiência dos recifes artificiais de Mito foi avaliada positivamente após o assentamento tanto das unidades de concreto quanto das embarcações de ferro.

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“…Multibeam echo sounders (MBES) and side scan sonars (SSS) have wide applications in remote sensing of seabed topography or morphology [1][2][3][4][5]. The SSS, which usually has higher frequency than MBES, has certain advantages, such as low cost and easy installation, and its ability to obtain large-scale, high-resolution, and high-signal-to-noise ratio (SNR) seabed images [1].…”

Section: Introductionmentioning

confidence: 99%

“…The SSS, which usually has higher frequency than MBES, has certain advantages, such as low cost and easy installation, and its ability to obtain large-scale, high-resolution, and high-signal-to-noise ratio (SNR) seabed images [1]. Given that the towing operation mode is often adopted in SSS measurement, the positions of an SSS towfish are estimated through the headings and positions of the surveying vessel and towing length and depth.…”

Section: Introductionmentioning

confidence: 99%

A New Method for Acquisition of High-Resolution Seabed Topography by Matching Seabed Classification Images

et al. 2017

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Abstract:The multibeam echo sounders (MBES) can acquire accurate positional but low-resolution seabed terrain and images, whereas side scan sonars (SSS) can only acquire inaccurate positional but high-resolution seabed images. In this study, a new method for superimposing corrected-positional SSS images on multibeam bathymetric terrain is proposed to obtain high-resolution and accurate-positional seabed topography using traditional MBES and SSS. Three steps, including the normalization by the z-score, sediment classification by the k-means++ algorithm, and denoising processing using morphological operations, are processed for both MBES and SSS images to obtain the corresponding sediment images. Next, a segmented matching method is given based on the common sediment distributions and features of MBES and SSS sediment images. The two kinds of sediment images are matched segmentally using the speeded up robust features algorithm and random sample consensus algorithm. Then, the positions of SSS images are corrected segmentally using thin plate splines based on matching points. Finally, the corrected SSS image is superimposed on MBES bathymetric terrain, based on positional relationship. The proposed method was verified through experiments, and high image resolution and high position accuracy seabed topography were obtained. Moreover, the performances of the method are discussed, and some conclusions are drawn according to the experiments and discussions.

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Automatic mine detection by textural analysis of COTS sidescan sonar imagery

Cited by 37 publications

References 6 publications

Detection of Stones in Marine Habitats Combining Simultaneous Hydroacoustic Surveys

Detection of Stones in Marine Habitats Combining Simultaneous Hydroacoustic Surveys

Side-scan sonar techniques for the characterization of physical properties of artificial benthic habitats

A New Method for Acquisition of High-Resolution Seabed Topography by Matching Seabed Classification Images

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