Microfinish measurement apparatus and technique

Details Microfinish measurement apparatus and technique Microfinish measurement apparatus and technique

1982-05-20

1984-10-09

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

73105, H04N 718

Patent

active

044764898

ABSTRACT:
An apparatus and technique for measuring microfinishes of workpieces at on-line speeds. A digitized image of a finished surface of a workpiece is generated. Under microprocessor control, a distribution of the digitized values is obtained. This distribution is compared against pre-stored distributions of known surface finishes to determine the type of finish of the workpiece and/or the acceptability of the finish. The comparison is obtained using curve matching techniques and by comparison of mean gray level values.

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