Ahgtraet. This paper describes a Z-80 microprocessor-based image analyzer developed for global parameter evaluation of images over a 256 × 256 pixel frame. It consists of a microscope, coa scanner, 6-bit video ADC, Z-80 computer and an image display monitor. Facilities are provided for feature erosion/dilation and halo correction. The paper also presents the details of another more powerful user microprogrammabie HPI000 minicomputer-based image analysis system under development. This system consists of an optical microscope/epidiascope coupled to a cbalnicon scanner. Here the 512 x 512 pixel image is acquired with 8-bit resolution. It provides for shading correction, auto-delineation, image processing and image analysis functions for evaluation of various basic and derived parameters. Both the systems are software intensive and are realised according to requirements of quantitative metallography. They can also be used for analysis of/mages obtained in the fields of biology, medicine, geological survey, photography and space.
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