Abstract
In this article, a 3D display technology based on light-ray reconstruction using holography is introduced, mainly focusing on the holographic 3D printer (holoprinter), which automatically prints the hardcopy of a digital 3D image by means of a holographic stereogram. The principle and system of recording and reconstructing full-color, full-parallax (both horizontal and vertical parallaxes) 3D images are described. It is also presented that the use of 3D displays based on light-ray reconstruction, such as a holographic stereogram, is significant for the realistic reproduction of gloss, shade, and texture of an object surface. Finally, by comparing a holographic stereogram and a hologram, discussions are given on the limitation of 3D displays by lightray reconstruction, and the features of wavefront reconstruction are addressed as well.
