Acta Stereologica

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Erkki Oja & Yrjö Collan

Basic principles of image analysis by a computer

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Abstract

This article reviews the main principles of image analysis by a computer. The picture is stored in computer memory as a collection of picture elements (pixels), each located in 2-dimensional space and characterized by a grey value. A histogram of grey levels (grey level histogram) can be calculated by the computer and applied in thresholding. Other operations described include background noise smoothing, boundary enhancement, erosion, dilatation, and size distribution analysis.

To cite this article

Erkki Oja & Yrjö Collan, «Basic principles of image analysis by a computer», Acta Stereologica [En ligne], Volume 2 (1983), Number 2 - Proceedings of the second symposium on morphometry in morphological diagnoses, september 7-9, 1983, Kuopio, Finland - Dec. 1983, 250-261 URL : https://popups.ulg.ac.be/0351-580x/index.php?id=4187.

About: Erkki Oja

Department of Applied Mathematics, University of Kuopio, P.O.B. 6, 70211 Kuopio 21, Finland

About: Yrjö Collan

Department of Pathology, University of Kuopio, P.O.B. 6, 70211 Kuopio 21, Finland