Integral color rainbow hologram based on computer image processing

A new method for obtaining color rainbow holograms of 3D scenes using single wavelength laser is proposed and implemented by combining integral photography, computer graphics and rainbow holography. In the method, three integral photography (IP) images whose colors correspond to three primary colors are calculated by simulating integral photography, and exported on the film. By illuminating the IP images with diffused coherent beam from the opposite side, three images of the 3D scene are reproduced and overlapped on a particular image plane by the three linear micro-lens arrays. The linear micro-lens arrays can be regarded as the slits. A color rainbow hologram can be created after a single exposure by interfering the reproduced 3D images and the reference beam. Furthermore, we demonstrate experimentally the new method for a simple case and the results can be generalized in integral photography.