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- Title
PRECISION OF SUB-PIXEL IMAGE DISPLACEMENT MEASUREMENTS.
- Authors
LUTOWSKI, Zbigniew; MARCINIAK, Beata; MARCINIAK, Tomasz; BUJNOWSKI, Sławomir
- Abstract
Digital image correlation (DIC) and Optical flow method (Flow) are among the widely used methods in displacement detection applications. Both methods allow the use of sub-pixel information, leading to increase accuracy. The authors decided to verify the accuracy of the displacement detection of these methods by comparing the results with real displacement. The tests were performed on a special system for fatigue properties testing of microobjects (MFS). It allows setting very small movement, smaller than the value corresponding to the pixel size in the image. This allowed estimating measuring errors for both methods.
- Subjects
DIGITAL image correlation; PIXELS; OPTICAL flow; DIGITAL images; ELECTRONIC speckle pattern interferometry
- Publication
Journal of Machine Construction & Maintenance, 2017, Issue 4, p21
- ISSN
1232-9312
- Publication type
Article