Data processing: measuring – calibrating – or testing – Measurement system – Dimensional determination
Reexamination Certificate
2007-02-02
2009-06-02
Tsai, Carol S (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system
Dimensional determination
C702S152000, C702S153000, C033S503000, C033S559000, C073S105000, C073S601000, C073S614000
Reexamination Certificate
active
07542872
ABSTRACT:
A form measuring instrument measures a form of a surface of an object to be measured using a contact to follow the surface. A pseudo-measurement point acquirer acquires positional coordinates of the reference point of the contact as pseudo-measurement points when the contact touches the object at a plurality of locations. A normal vector generator estimates a surface or line along the pseudo-measurement points from the pseudo-measurement points to calculate normal vectors extending from the pseudo-measurement points to the surface or line. A contact model locator locates contact models which specify the surface form of the contact so as to coincide the pseudo-measurement points with reference points of the contact models and so as to coincide attitudes of the contact on measurement with attitudes of the contact models. A measurement point calculator calculates cross points as measurement points, at which the normal vectors cross the surfaces of the located contact models.
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Goto Tomonori
Kadowaki Soichi
Kojima Tsukasa
Mitutoyo Corporation
Oliff & Berridg,e PLC
Tsai Carol S
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