CNR and SD as error bar for (A) limited phase wrap case, (B) moderate phase wrap case and (C) extensive phase wrap case. HR, HG, HA, HM, UG, UA, UM and US indicates Homodyne-rectangular filtering, Homodyne-Gaussian filtering, Homodyne-Hanning filtering, Homodyne-Hamming filtering, phase unwrapping-Gaussian filtering, phase unwrapping-Hanning filtering, phase unwrapping-Hamming filtering and phase unwrapping-smoothing approaches, respectively. FS/SF represent filter sizes/smoothing factors.