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US 8,803,943 B2Granted
Formation apparatus using digital image correlation
AssigneeNational Applied Research Laboratories
InventorsChi-Hung Huang, Yung-Hsiang Chen, Wei-Chung Wang, Tai-Shan Liao
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Abstract
The present disclosure uses at least three cameras to monitor even a large-scale area. Displacement and strain are measured in a fast, convenient and effective way. The present disclosure has advantages on whole field, far distance and convenience.
Claims28
A formation apparatus using digital image correlation, comprising
- a bearing unit, said bearing unit comprising
- a base;
- and
- a measuring track, said measuring track being bonded with said base;
- a plurality of adjusting units, said adjusting units comprising at least a first adjusting unit, a second adjusting unit and a third adjusting unit, said adjusting units being movably set on said measuring track;
- an image taking unit, said image taking unit comprising at least
- a first camera, said first camera being set on said first adjusting unit;
- a second camera, said second camera being set on said second adjusting unit;
- and
- a third camera, said third camera being set on said third adjusting unit,
- wherein at least said first camera, said second camera and said third camera use at least a first calibrating point and a second calibrating point as reference points to process measurement;
- a calibration plate, said calibration plate being set on a plane of optical axes of said first camera, said second camera and said third camera;
- and
- a processing unit, said processing unit being connected with at least said first camera, said second camera and said third camera,
- wherein said processing unit has a digital image formation computing module to analyze digital image data obtained from at least said first camera, said second camera and said third camera.
12 more elements
Dependencies are inferred from the claim text.