A PRELIMINARY EVALUATION OF THE ELASTIC SURFACE TRANSFORMATION FOR PROCESSING AND DISPLAYING PASSIVE SONAR AND PHOTOGRAPHIC INFORMATION.
HUMAN FACTORS RESEARCH INC GOLETA CALIF
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The goal of the research was to enhance images signals of low contrast and resolution by means of the elastic surface transformation EST. The EST is a new display processing technique that permits the observer to manipulate and enhance marginal signals. The EST process consists of photographically transferring information from some sensor to a uniformly prestretched surface. The surface is then relaxed in a continuous fashion, producing a uniform spatial compression. During compression the element size remains constant. The shrinking changes the spatial dispersion, which increases the density of the elements per unit area. This increases the image contrast and enhances the dim edges and gradients. Optical magnification maintains the enhanced image at its original size. The major achievements of the present research were 1 the development of a technique for implementing the EST, and 2 demonstrating enhanced marginal photographic images. These results show that it is possible to enhance images that could not be seen prior to the transformation. Author
- Printing and Graphic Arts
- Human Factors Engineering and Man Machine Systems