Correction to: Spatial DIC Errors due to Pattern-Induced Bias and Grey Level Discretization

Fayad, S. S.; Seidl, Daniel; Reu, Phillip L.

doi:10.1007/s11340-019-00567-3

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“…The mean and standard error of the DIC displacement measurement were then calculated for each image, similar to the method used in [34]. Important to note here is that these metrics are a measure of spatial statistics, meaning they are measured across some region in space, as opposed to temporal statistics which are measured at the same location across time (see [35] for a more in-depth discussion of spatial vs. temporal measurements). Although the two are not strictly the same, they are assumed equivalent for comparison purposes for the settings under investigation here since neither displacement nor strain is applied to the sample.…”

Section: Preliminary Noise Studymentioning

confidence: 99%

The Effect of Bit Depth on High-Temperature Digital Image Correlation Measurements

et al. 2022

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Digital Image Correlation (DIC) is a camera-based method of measuring displacement and strain. High-temperature DIC is challenging due to light emitted from the sample which can saturate the image. This effect can be mitigated using optical bandpass filters, but the maximum sample temperature range of DIC remains dependent on the camera and camera settings. Among camera settings, bit depth, also referred to as color depth or number of bits, has received insufficient attention in high-temperature DIC literature. In this work, the effect of bit depth on DIC measurements is investigated both analytically and experimentally. It is shown that if image noise is sufficiently low, then increasing bit depth reduces DIC random error. A new metric, the effective number of bits, is presented to determine the appropriate number of bits for DIC images. Using increased bit depth, reduced exposure time, and low-noise images, the maximum sample temperature for DIC measurements was shown to increase without negatively impacting random error.

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Section: Preliminary Noise Studymentioning

confidence: 99%

The Effect of Bit Depth on High-Temperature Digital Image Correlation Measurements

et al. 2022

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Correction to: Spatial DIC Errors due to Pattern-Induced Bias and Grey Level Discretization

Abstract: The original article has been corrected to include labels on Figs. 4 and 9 and corrections made to the Eqs. (3), (4) and (8). Publisher's Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Cited by 1 publication

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The Effect of Bit Depth on High-Temperature Digital Image Correlation Measurements

The Effect of Bit Depth on High-Temperature Digital Image Correlation Measurements

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