Interactive Digital Image Feature Analysis as Applied to Cement and Concrete Microstructural Investigations

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by Sidney Diamond, Purdue Univ, West Lafayette, United States,

Document Type: Proceeding Paper

Part of: Digital Image Processing: Techniques and Applications in Civil Engineering

Abstract: A novel procedure involves interactive chemical image analysis of separable features in the backscattered image. In this procedure a backscatter image is acquired by the image analysis computer as a preliminary step. After conventional binary segmentation and other preliminary processing steps, the separate particles or features present are recognized and enumerated. The computer then takes over active control of the scanning electron microscope. The beam is positioned over each particle in turn, and chemical information is recorded by the energy-dispersive x-ray analysis system. The chemical information secured for each recognized particle is then compared with preset criteria to establish the chemical-mineralogical classification of the particle. When the process is complete, the particle assemblage can be broken down by chemical class as well as by geometric feature so as to provide quantitative characterizations. or comparisons between particles of different chemical types.

Subject Headings: Imaging techniques | Particles | Chemicals | Computer analysis | X rays | System analysis | Concrete |

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