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Abstract
Seterology is conveniently described as the mathematical means by which a two dimensional image is analyzed to produce a three dimensional description of the subject field. An optical microscope is not an essential component for stereology. Measurements can be performed on electron micrographys, or in fact, on any image that can be entered into a computer. JThere exists various optical techniques by which the image can be optimized with respect to contrast and the selection form among these techniques is a function of the primary objectives for the investigation and measurement. There exists an extensive collection of informative reports fgrom the fields of medecine, biology, botany, metallurgy, mineralogy, ceramics and colloids. These reports reange from a broad treatment of subjects like image enhancement and image processing to the very specific subjects like clustering and subject anisotropy. But each of these disciplines have solved problems that related to the hardware requirements, software capability, and the most appropriate optical instrumentation. They all eventually have had to confront the problems inherent to the very nature of their materials which include finding the most suitable method of sample preparation. Polymeric foam investigations can benefit greatly as a result of this evolution of challenges experienced by these other disciplines. However, researchers must eventually solver some problmes that are specifically inherent to foams. This begins by making decisions regarding the major objectives to the quantitative characterization of foam cells, or more simply stated, to what use will this information be put? The need for this decision affects the computer software methodology since image processing methods are designed to address different characteristics of the image. But discussion of the advantages these alternative pathways make available in image procesing is not appropriate in this presentation. One might wonder why it should be necessary to adopat another approach for foam characterization because characterization has been successfully accomplished by a knowledge of foam density, average cell size and ultimately, the best characterization of all, by a measurement of the foam's actual performance.
Seterology is conveniently described as the mathematical means by which a two dimensional image is analyzed to produce a three dimensional description of the subject field. An optical microscope is not an essential component for stereology. Measurements can be performed on electron micrographys, or in fact, on any image that can be entered into a computer. JThere exists various optical techniques by which the image can be optimized with respect to contrast and the selection form among these techniques is a function of the primary objectives for the investigation and measurement. There exists an extensive collection of informative reports fgrom the fields of medecine, biology, botany, metallurgy, mineralogy, ceramics and colloids. These reports reange from a broad treatment of subjects like image enhancement and image processing to the very specific subjects like clustering and subject anisotropy. But each of these disciplines have solved problems that related to the hardware requirements, software capability, and the most appropriate optical instrumentation. They all eventually have had to confront the problems inherent to the very nature of their materials which include finding the most suitable method of sample preparation. Polymeric foam investigations can benefit greatly as a result of this evolution of challenges experienced by these other disciplines. However, researchers must eventually solver some problmes that are specifically inherent to foams. This begins by making decisions regarding the major objectives to the quantitative characterization of foam cells, or more simply stated, to what use will this information be put? The need for this decision affects the computer software methodology since image processing methods are designed to address different characteristics of the image. But discussion of the advantages these alternative pathways make available in image procesing is not appropriate in this presentation. One might wonder why it should be necessary to adopat another approach for foam characterization because characterization has been successfully accomplished by a knowledge of foam density, average cell size and ultimately, the best characterization of all, by a measurement of the foam's actual performance.
Date
9/1989
9/1989
Author(s)
M Rhodes; B Khaykin
M Rhodes; B Khaykin
Page(s)
17
17
Keyword(s)
stereology; two dimensional image; foam structure
stereology; two dimensional image; foam structure