1. A system, comprising: at least one processor; and a memory comprising program instructions, wherein the program instructions are executable by the at least one processor to: obtain a radiance image of a scene captured with a lens-based radiance camera comprising an array of refracting microlenses, wherein the radiance image includes optically mixed different spatial and angular frequency components; and demultiplex the radiance image in the frequency domain to generate multiple parallax views of the scene.