SMOOTHING OF VECTOR FIELDS BY USING THE BEZIER SURFACE FOR STRAIN ESTIMATION BY THE METHOD OF DIGITAL IMAGE CORRELATION
S. V. Panin1,2, V. V. Titkov1, P. S. Lyubutin1
1Institute of Strength Physics and Materials Science, Siberian Branch, Russian Academy of Sciences, pr. Akademicheskii 2/4, Tomsk, 634021 Russia
2Tomsk Polytechnical University, pr. Lenina 30, Tomsk, 634050 Russia
Keywords: smoothing, Bezier surface, aperture adaptation, vector field, shear strain intensity
Subsection: ANALYSIS AND SYNTHESIS OF SIGNALS AND IMAGES
Abstract
The use of the Bezier surface as a smoothing filter for vector fields is studied. Advantages of the Bezier surface over the moving average filter are determined. The algorithm of adaptation of the filter aperture size is modified. The efficiency of adaptation of the aperture size in vector field processing in the problem of estimating the material strain by the method of digital image correlation is considered.
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