Fig. 1. Schematic diagram of off-axis pre-magnification configuration

Fig. 2. Schematic diagram for distribution of spectral amplitude in digital holography

Fig. 3. Optical path of off-axis transmission digital holographic microscopy

Fig. 4. Holograms and its phase and amplitude spectra of different objects

Fig. 5. Spatial filtering and 3D reconstruction profiles

Fig. 6. Reconstruction profile

Fig. 7. Reconstruction images of USAF 1951 resolution chart： （a） Hologram； （b） Filtering windows， MB and Auto represent filtering windows of the prior template filtering and adaptive spatial filtering of this paper， respectively； （c） and （d） are the reconstructed intensity images of adaptive spatial filtering and the prior template filtering， respectively； （e） Enlarged region labeled in （c）； （f） Enlarged region labeled in （d）

Fig. 8. One-dimensional intensity profiles of element 2 of group 8 in reconstructed intensity images

Table 1. Coordinate and distance between regional center of gravity and maximum value point of spectral phase