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

Figure 5

Comparison of 8- and 12-bit DIC displacement standard error as a function of at otherwise baseline settings. (a) A plot of DIC displacement standard error vs. for 8- and 12-bit images. (b) The 12-bit standard error divided by the 8-bit standard error (), which illustrates the reduction in standard error achieved by using 12-bit images instead of 8-bit images for varying values of . As increases (noise decreases), the relative difference between 8- and 12-bit DIC random error increases.

(a)

(b)