Browsing by Author "Olson, Derek R."
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Comparison of model selection techniques for seafloor scattering statistics
Olson, Derek R.; Geilhufe, Marc (2023)Acoustic measurements of seafloor backscattering are a source of unwanted sound in seafloor object detection1–3, but also provide a rich set of information regarding the seafloor properties and structure4–7. The intensity ... -
Measurements of high-frequency acoustic scattering from glacially eroded rock outcrops
Olson, Derek R.; Lyons, Anthony P.; Sæbø, Torstein Olsmo (2016)Measurements of acoustic backscattering from glacially eroded rock outcrops were made off the coast of Sandefjord, Norway using a high-frequency synthetic aperture sonar (SAS) system. A method by which scattering strength ... -
Modeling the effect of random roughness on synthetic aperture sonar image statistics
Lyons, Anthony P.; Olson, Derek R.; Hansen, Roy Edgar (2022-09-02)A model has been developed to predict the effect of random seafloor roughness on synthetic aperture sonar (SAS) image statistics, based on the composite roughness approximation–a physical scattering model. The continuous ... -
A Study on the Effect of Commonly Used Data Augmentation Techniques on Sonar Image Artifact Detection Using Deep Neural Networks
Orescanin, Marco; Harrington, Brian; Olson, Derek R.; Geilhufe, Marc; Hansen, Roy Edgar; Warakagoda, Narada Dilp (2023-10-20)This paper presents an empirical study that evaluates the impact of different types of augmentations on the performance of Deep Learning (DL) models for detecting imaging artifacts in Synthetic Aperture Sonar (SAS) imagery. ... -
Uncertainty quantification with deep learning through variational inference with applications to synthetic aperture sonar
Orescanin, Marco; Harrington, Brian; Olson, Derek R.; Geilhufe, Marc; Hansen, Roy Edgar; Warakagoda, Narada Dilp (2023)Deep learning (DL) has gained popularity in applications and research within the active sonar community both in academic and commercial settings due to the ability of such models to learn complex non-linear relationships ... -
A wavelet schrinkage approach to detect candidate point scatterers in synthetic aperture sonar images for resolution estimation
Geilhufe, Marc; Olson, Derek R.; Hansen, Roy Edgar; Synnes, Stig Asle Vaksvik (2023)Autonomous Underwater Vehicles (AUVs) that are equipped with side-looking synthetic aperture sonar (SAS) have become a popular asset for efficient high resolution imaging and mapping of the seafloor. There are situations ...