More images of computer generated rainbow hologram

Photographs shown below are the white light reconstructed images from the computer generated rainbow holograms taken by a CCD camera. We use photographic reduction to materialize computer generated rainbow holograms. The images of the holographic fringe are taken by an SLR camera with Fuji's "Minicopy film."

Recent results (Updated on March 2, 2000)

These full color and full shaded rainbow holograms are calculated on a PC (Pentium III 450MHz), then printed on 4 sheets of A3 papers whose total pixel numbers are 7,200 x 4,800. Total computational time is less than one minutes, though it is a function of the total number of the object points and other parameters. The size of the final hologram on the film is about 36mm x 24mm. Therefore, pixel size of the hologram becomes 5 microns square.

Fig. 1 Premitive objects consists of 5,138 point sources.

Fig. 2 Saturn look alike object consists of 6,413 point sources.

Original results

The rainbow holograms are calculated on a workstation (Sun SS5), then displayed on the CRT display whose pixel numbers are 1,280 x 1,024. Total computational time is less than five second, though it is a function of the total number of the object points and other parameters. The images of the holographic fringe are taken by an SLR camera with Fuji's "Minicopy film." The size of the exposed CRT image on the film is about 5mm x 4mm. Therefore, pixel size of the hologram becomes roughly 4 microns square.

Fig. 1 White light reconstructed image from of full color rainbow CGH.

(a) view from left side. (b) view from right side.

Fig. 2 Stereoscopic pair of white light reconstructed image from different viewing position.


(a) Focused in the front.	(b) Focused in the middle.	(c) Focused in the rear.

Fig. 3 White light reconstructed images taken by CCD camera with different focal planes.

Back to the previous page.
Last modified:
For further information, please write to:

hiroshi@panda.ecs.cst.nihon-u.ac.jp