1. A method for calibrating a plenoptic imaging system, the plenoptic imaging system including primary imaging optics, a secondary imaging array and a sensor array, the method comprising: the plenoptic imaging system capturing plenoptic images of an object that produces collimated light propagating along different propagation directions, each plenoptic image comprising a plurality of superpixels, each superpixel comprising a plurality of subpixels, each subpixel capturing light from at least one corresponding light field viewing direction, the light field viewing directions corresponding to the different propagation directions; based on the captured plenoptic images, calculating a mapping of propagation directions from the object to subpixels in the plenoptic image, the mapping defining the light field viewing directions for the subpixels; and after calculating the mapping, the plenoptic imaging system capturing a second plenoptic image of a second object, and processing the second plenoptic image using the calculated mapping to account for the light field viewing directions for the subpixels.