Extraction of Characteristic Features from a Visual Pattern by Fraunhofer Diffraction

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概要

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• Two methods to extract characteristic features from a visual pattern are proposed by making use of Fraunhofer diffraction produced by a laser beam. One is to find the presence and the disposition of straight line elements in a pattern from a sequence of straight lines appearing in the diffraction image by illuminating a part of the pattern by the beam and moving the pattern across it. The other utilizes a double diffraction optical system which performs low-pass or band-pass spatial frequency filtering to modify the visual pattern. It is experimentally found that cross points, corner points and edges of the pattern are emphasized. An analogy between this system and the human visual nervous system is also pointed out.

• 社団法人応用物理学会の論文
• 1968-01-05

著者

• Fujimura Sadao

  Department Of Mathematical Engineering And Instrumentation Physics University Of Tokyo

関連論文

• Extraction of Characteristic Features from a Visual Pattern by Fraunhofer Diffraction
• Extraction of a Property of Visual Patterns by Fraunhofer Diffraction

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