A camera, including: two imaging systems each comprising a different optical path corresponding to a different viewing angle of an object； one or more illumination sources； a mask disposed with multiple pairs of apertures, wherein each aperture of each aperture pair corresponds to a different one of the imaging systems； at least one detector configured to acquire multiple image pairs of the object from the two imaging systems via the multiple pairs of apertures； and a processor configured to produce from the multiple acquired image pairs a multi-layer three dimensional reconstruction of the object.
