MULTIPLE-SCALE DIGITAL IMAGE CORRELATION PATTERN AND MEASUREMENT

PROBLEM TO BE SOLVED: To provide a method and apparatus for digital image correlation.SOLUTION: A camera system 104 is used to obtain larger scale images 142 of a larger scale dot pattern 114 on a surface 102 of a workpiece 100 and smaller scale images of a smaller scale dot pattern 120 on the surfa...

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Bibliographische Detailangaben
Hauptverfasser:	JAMES E PILLERS, KEVIN EARL MCCRARY, JAMES A GROSSNICKLE
Format:	Patent
Sprache:	eng
Schlagworte:	CALCULATING COMPUTING COUNTING IMAGE DATA PROCESSING OR GENERATION, IN GENERAL MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS PHYSICS TESTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method and apparatus for digital image correlation.SOLUTION: A camera system 104 is used to obtain larger scale images 142 of a larger scale dot pattern 114 on a surface 102 of a workpiece 100 and smaller scale images of a smaller scale dot pattern 120 on the surface 102 of the same workpiece 100. The smaller scale dot pattern 120 forms a larger dot 116 in the larger scale dot pattern 114 in the larger scale images 142. The larger scale images 142 and the smaller scale images 143 are used to determine a measurement 109 of the workpiece 100.