A comparison of several methods for generation of binary holograms of three dimensional (3D) scenes

Abstract

Past research has revealed that when the intensity image of a 3D scene is down-sampled and converted into a digital Fresnel hologram, the reconstructed image of the hologram could generally results in favorable visual quality. This paper reviews a series of methods based on this concept, each providing incremental improvement over its precedents. The pros and cons of these schemes are described and illustrated with examples. It is shown that although these methods are capable of preserving, to a reasonable extent, the shaded regions and the edges in the reconstructed image, the latter is masked with a texture of the down-sampling lattice. To address this problem, the author proposed a new method that employs the integration of an adaptive and a random down-sampling lattice. Experimental result reveals that in comparison with the existing schemes, the proposed method provides a more natural appearance on the shaded regions of the reconstructed image.