Three-dimensional reconstruction using integral imaging technique of captured images by holographic method

Abstract

In this paper, we propose the II reconstruction technique from the hologram pattern with some image processing. That is, with II reconstruction, we can simplify the reconstruction process by eliminating the coherent light source, which is used in the conventional display holographic system. That is, computer generated holography is used as a holographic 3D image capturing. Then generated hologram pattern is segmented and reconstructed respectively. In holographic recording process, object point is recorded all over the region of hologram pattern. In other words, object point is recorded at hologram pattern at each perspective viewpoint. Therefore, when the segmented hologram pattern is reconstructed, perspective images are reconstructed. That is, multi-view images with horizontal and vertical parallax are reconstructed. These multi-view images has a full parallax are similar to sub-image array in II. Therefore, all reconstructed images are rearranged by form of sub-image array, and transformed by elemental image array. Then the elemental images are reconstructed by II technique. In the experiment, the characters of 'KW' with different depth are used as 3D objects. Then, CGH pattern of 2,000 × 2,000 pixels is generated with input and depth images, and the CGH pattern is segmented and reconstructed respectively. And the reconstructed holographic images are integrated as a sub-image array then successfully reconstructed using II technique.