METHOD AND APPARATUS FOR HARDNESS TESTER

METHOD AND APPARATUS FOR HARDNESS TESTER

A hardness tester has an indentation former forming an indentation by pressing an indenter against a surface of a sample; an image capture controller controlling a CCD camera to capture an image of the surface of the sample and obtain image data; an indentation area extractor extracting an indentati...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
1. Verfasser: Miyakura, Jyota
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CALCULATING
COMPUTING
COUNTING
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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Beschreibung
Zusammenfassung:A hardness tester has an indentation former forming an indentation by pressing an indenter against a surface of a sample; an image capture controller controlling a CCD camera to capture an image of the surface of the sample and obtain image data; an indentation area extractor extracting an indentation area based on the obtained image data; and a hardness calculator calculating hardness of the sample based on the extracted indentation area. The indentation area extractor has a reduced image generator reducing the image obtained from the image data of the surface of the sample at a scale ratio selected from a plurality of predetermined scale ratios and generating a reduced image; and a pattern matcher performing pattern matching with respect to the generated reduced image and extracting the indentation area.