1. A method comprising: facilitating receipt of a plenoptic image associated with a scene, the plenoptic image comprising a plurality of plenoptic micro-images and being captured by a focused plenoptic camera; generating a plurality of plenoptic vectors for the plurality of plenoptic micro-images of the plenoptic image, wherein an individual plenoptic vector of the plurality of plenoptic vectors is generated for an individual plenoptic micro-image of the plurality of plenoptic micro-images; and assigning disparities for the plurality of plenoptic micro-images of the plenoptic image, wherein a disparity of the disparities for a plenoptic micro-image of the plurality of plenoptic micro-images is assigned at least by: accessing a plurality of subspaces associated with a set of pre-determined disparities, wherein a subspace of the plurality of subspaces is associated with a corresponding pre-determined disparity of the set of pre-determined disparities, projecting a plenoptic vector for the plenoptic micro-image in the plurality of subspaces associated with the set of pre-determined disparities, calculating a plurality of residual errors based on projections of the plenoptic vector in the plurality of subspaces, and determining the disparity for the plenoptic micro-image based on a comparison of the plurality of residual errors.