Title :
Compression of computer generated hologram based on phase-shifting algorithm
Author :
Xing, Yan ; Pesquet-Popescu, B. ; Dufaux, Frederic
Author_Institution :
Dept. of Signal & Image Process., Inst. Mines-Telecom Paristech, Paris, France
Abstract :
In this paper, we propose an algorithm that combines computational holographic imaging and its reconstruction with a compression method to reduce the storage burden of digital holograms. The interference patterns are generated by using ray tracing method which can simulate the optical propagation of virtual objects based on phase-shifting digital holography (PSDH). Coding techniques, e.g. Standard baseline Joint Photographic Experts Group (JPEG) and standard JPEG 2000, are applied to compress the computer generated holograms (CGHs). The image of virtual objects is reconstructed by Fresnel approximation with compressed CGHs. In simulations, we use simply defined 3-Dimensional (3D) virtual objects to test the efficiency of these two coding techniques. We show that acceptable reconstruction quality is obtained by using JPEG and JPEG 2000 compression methods. Nevertheless, more efficient compression methods applied on CGHs for complicated virtual objects can be expected in the future.
Keywords :
computer-generated holography; image coding; image reconstruction; light interference; light propagation; optical testing; ray tracing; 3D virtual objects; Fresnel approximation; JPEG 2000 compression method; PSDH; Standard baseline Joint Photographic Experts Group; coding techniques; compressed CGH; computational holographic imaging; computer generated hologram; image reconstruction; interference pattern; optical propagation; phase-shifting algorithm; phase-shifting digital holography; ray tracing method; standard JPEG 2000; Computers; Holography; Image coding; Image reconstruction; Interference; Laser beams; Transform coding; Computer generated holography; hologram reconstruction; image compression; phase-shifting digital holography;
Conference_Titel :
Visual Information Processing (EUVIP), 2013 4th European Workshop on
Conference_Location :
Paris