1. A method for spatial reconstruction of a plenoptic image of an object, the method comprising: accessing a plenoptic image captured by a plenoptic imaging system, the plenoptic imaging system performing a plenoptic imaging process that is modeled by a pupil image function (PIF) that relates an object to a plenoptic image formed by that object; and applying a PIF inversion process to the captured plenoptic image to produce an estimate of the object.