DISTORTION EVALUATING APPARATUS AND DISTORTION EVALUATING METHOD

DISTORTION EVALUATING APPARATUS AND DISTORTION EVALUATING METHOD

Provided is a distortion evaluating apparatus which can quantitatively evaluate distortion of a plane to be measured. The distortion evaluating apparatus (40) evaluates distortion based on three-dimensional measurement data of the plane to be measured. The distortion evaluating apparatus is provided...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: KATSUMA HIDETO, TACHI YOICHI, IKEDA KOTARO, NAKASAKU SHINYA, OUE SEIJI
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
MOTOR VEHICLES
PERFORMING OPERATIONS
PHYSICS
TESTING
TRAILERS
TRANSPORTING
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Beschreibung
Zusammenfassung:Provided is a distortion evaluating apparatus which can quantitatively evaluate distortion of a plane to be measured. The distortion evaluating apparatus (40) evaluates distortion based on three-dimensional measurement data of the plane to be measured. The distortion evaluating apparatus is provided with a quadratic differential means (41) which performs quadratic differential to two-dimensional measurement data of a cross section, which indicates unevenness of the plane to be measured, and derives curvature data of the cross section; an acceptable range setting means (43) for setting a set acceptable range relating to the curvature data, depending on ranges from a reference value to an upper limit value and to a lower limit value; and a distortion data extracting means (42) for extracting data exceeding the set allowable range from the curvature data as distortion data indicating distortion on the cross section.