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Viewing angle enhancement of a real-time integral imaging system using multi-directional projections and GPU parallel processing
(© 2017 SPIE, 2017-02) Alam, Md Ashraful; Islam, Md Sifatul; Tareque, Mohd Zishan; Subhani, Mahfuze; Rafi, Mohammad Rashidur Rahman; Alam, Md Ashraful; Kim, Nam; Department of Computer Science and Engineering
A novel method of viewing angle enhancement of a real-time integral imaging system using multi-directional projections and GPU parallel processing is proposed. The proposed system is composed of three processes: information acquisition of real objects, generation of multi-directional elemental image sets, and reconstruction of 3D images by using multidirectional projections scheme. To implement this system, depth and color (RGB) information of each object point are captured by a depth camera; then, a dynamic algorithm and GPU parallel processing are used for generating multidirectional elemental image sets to be illuminated in different directions as well as to maintain a real-time processing seed; and finally, 3D images are reconstructed by using a time-multiplexed multi-directional projection scheme through an appropriate optical setup of a projection-type integral image system. Multi-directional illuminations of elemental image sets enhance the optical ray divergence of reconstructed 3D images according to the directional projection angles. Hence, a real-time integral imaging system with enhanced viewing angle is achieved.