Fig. 3From: Noise reduction of electron holography observations for a thin-foiled Nd-Fe-B specimen using the wavelet hidden Markov modelInfluence of the fringe spacing on the visibility of the reconstructed phase image. a TEM image of the thin-foiled specimen, identical to Fig. 2a. The blue rectangular area in (a) indicates the area for phase images in Fig. 4. b-d Reconstructed phase images at fringe spacings of 5.2 nm, 2.4 nm, and 1.7 nm, respectivelyBack to article page