Underwater Imaging with Acoustic Lenses: Image Processing and Visualization,

Abstract

This report discusses image processing, scene reconstruction, and visualization techniques used for underwater acoustic images taken with lens-based systems from a stationary platform. These systems are designed for high-resolution imaging of objects from distances of a few meters. The acoustic lenses used for beamforming in the imaging systems are made of crystal polystyrene and are cut in cylindrical or spherical shapes. The cylindrical lens has a fan-shaped beam pattern and produces a 2D intensity image or shadowgram, while the spherical lens with a cone-shaped beam produces a 3D intensity image. Test images obtained by the spherical lens contain a remarkable degree of detail.

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Document Details

Document Type
Technical Report
Publication Date
Aug 30, 1996
Accession Number
ADA314604

Entities

People

  • Behzad Kamgar-Parsi

Organizations

  • United States Naval Research Laboratory

Tags

DTIC Thesaurus Topics

  • Acoustic Images
  • Acoustic Lenses
  • Dielectric Polymers
  • High Resolution
  • Image Processing
  • Images
  • Information Processing
  • Intensity
  • Lenses
  • Platforms
  • Polystyrenes
  • Stationary
  • Visualizations

Fields of Study

  • Physics

Readers

  • Computer Vision.
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Phased Array Antenna Design.