Supplementary Fig. 3: Light-field image rectification.
From: Instantaneous isotropic volumetric imaging of fast biological processes
(a) Every acquired light-field image has to be rectified in order to allow for proper light-field reconstruction. This involves resizing and interpolating the images to ensure that the number of pixels behind each microlens exactly correspond to the number of pixels defined in the PSF computation. (b) An automated image rectification procedure is implemented by detecting the lenslet center position and periodicity based on a calibration or background image. This was verified in 10 independent images.
