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Study of image characteristics on digital image correlation error assessment

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Academic year: 2021

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Fig. 2. 4-bit (a), 6-bit (b) and 8-bit (bit) reference images and grey-level histogram.
Fig. 3. Reference images for the 3 sets and grey-level histogram. (a) high saturated set, (b) saturated set and (c) standard set).
Fig. 6 shows the standard deviation normalized by a factor proportional to the square of the subset size and to the maximum second gradient of the displacement as a function of period p for the reference image set and for image set where each pixel of each
Fig. 7. Comparison of the asymptotic standard deviation of the displacement errors normalized by 4 p 2 a s 2 /p as a function of saturation.

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