Articles Tagged synthetic aperture sonar Subscribe to RSS Feed

A Target Classification Algorithm for Underwater Synthetic Aperture Sonar Imagery

Published: May 3rd, 2018

Abstract: The ability to discern the characteristics of the seafloor has many applications. Due to minimal visibility, Synthetic Aperture Sonar Imagery (SAS) uses sonar to produce a texture map of […]

Fractal Analysis of Seafloor Textures for Target Detection in Synthetic Aperture Sonar Imagery

Published: May 3rd, 2018

Abstract: Fractal analysis of an image is a mathematical approach to generate surface related features from an image or image tile that can be applied to image segmentation and to […]

Quantitative Evaluation Metrics for Superpixel Segmentation

Published: Apr 13th, 2018

Abstract: Superpixel segmentation methods have been found to be increasingly valuable in image processing and analysis. Superpixel segmentation approaches have been used as a preprocessing step for a wide variety […]

Comparison of Prescreening Algorithms for Target Detection in Synthetic Aperture Sonar Imagery

Published: Mar 23rd, 2018

Abstract: Automated anomaly and target detection are commonly used as a prescreening step within a larger target detection and target classification framework to find regions of interest for further analysis. […]

Possibilistic Fuzzy Local Information C-Means for Sonar Image Segmentation

Published: Oct 4th, 2017

Abstract: Side-look synthetic aperture sonar (SAS) can produce very high quality images of the sea-floor. When viewing this imagery, a human observer can often easily identify various sea-floor textures such […]

Multiple-instance learning-based sonar image classification

Published: Mar 17th, 2017

Abstract: An approach to image labeling by seabed context based on multiple-instance learning via embedded instance selection (MILES) is presented. Sonar images are first segmented into superpixels with associated intensity […]

Environmentally-Adaptive Target Recognition for SAS Imagery

Published: Mar 17th, 2017

Abstract: Characteristics of underwater targets displayed in synthetic aperture sonar (SAS) imagery vary depending on their environmental context. Discriminative features in sea grass may differ from the features that are […]

Partial Membership Latent Dirichlet Allocation for Image Segmentation

Published: Sep 11th, 2016

Abstract: Topic models (e.g., pLSA, LDA, SLDA) have been widely used for segmenting imagery. These models are confined to crisp segmentation. Yet, there are many images in which some regions […]

Partial Membership Latent Dirichlet Allocation

Partial Membership Latent Dirichlet Allocation

Published: May 11th, 2016

Abstract: For many years, topic models (e.g., pLSA, LDA, SLDA) have been widely used for segmenting and recognizing objects in imagery simultaneously. However, these models are confined to the analysis […]

Sand ripple characterization using an extended synthetic aperture sonar model and parallel sampling method

Published: Oct 11th, 2015

Abstract: The aim of this work is to characterize the seafloor by estimating invariant sand ripple parameters from synthetic aperture sonar (SAS) imagery. Using a hierarchical Bayesian framework and a […]