Development of Capabilities of Optical Diffraction Analysis for Quantitatively Comparing and Correlating Rock Fabrics and Fabric Changes

Abstract

Series of optical diffraction patterns (two-dimensional Fourier amplitude transforms) have been produced from photographs of rock specimens during successive stages of deformation to show spatial changes in fabric. Spatial filters and reference transforms for analysis of fabrics are being constructed from both artificial patterns and from transforms of real inputs. A method of mapping the transforms has been developed in which the input transparency is rotated about the optic axis to yield a spoke (radial) assembly of intensity profiles. Transforms have also been generated using partially coherent mercury vapor light as a source and a standard microscope plus auxiliary optics as the optical system.

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Document Details

Document Type
Technical Report
Publication Date
Aug 26, 1971
Accession Number
AD0731079

Entities

People

  • Howard J. Pincus

Organizations

  • University of Wisconsin–Milwaukee

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Data Processing
  • Diffraction
  • Diffraction Analysis
  • Earth Sciences
  • Geography
  • Image Processing
  • Mechanics
  • Microscopes
  • New York
  • Optical Images
  • Optical Processing
  • Optics
  • Orientation (Direction)
  • Photographic Materials
  • Photographs
  • Rock Mechanics
  • Systems Engineering

Fields of Study

  • Physics

Readers

  • Approximation Theory.
  • Geotechnical Engineering.
  • Optical Physics and Photonics.