Figure 1
From: 3D surface morphology imaging of opaque microstructures via light-field microscopy
USAF target experiment for examine refocusing depth region. (a) Digital refocused image of different practical focused position separately are on focus, −10 μm, −20 μm, and −30 μm. The horizontal coordinate shows different alpha coefficient value from 0.8 to 1, which means from lower position to on focus. (b) Exact digital refocused image of different practical focused image, which are also shown in the red dot block of (a).
