Fig. 4

Errors corresponding to the estimated displacement fields obtained from a CIV analysis of the synthetic grid images with an imposed analytical velocity field. a Error in slope (\(e^{u}_{s}\), defined in Eq. 7) plotted as a function of C _B and S _B . b \(e^{v}_{s}\) plotted as a function of C _B and S _B . c Error in the horizontal displacement field (e ^u, defined in Eq. 8) plotted at every pixel location (x,y) for (C _B ,S _B )=(25,55). d Error in the vertical displacement field (e ^v) plotted at every pixel location (x,y) for (C _B ,S _B )=(25,55). The white lines in (c) and (d) correspond to |d ^u|=3 pixels and |d ^v|=3 pixels, respectively. The colorbars in (c) and (d) are saturated at an error of 0.2 to bring out the features in the plots clearly