Multispectral high-resolution hologram generation using orthographic projection images

International Conference of Young Scientists and Specialists "Optics-2015"

Muniraj, I.^1 ; Guo, C.^1 ; Sheridan, J.T.^1

School of Electrical, Electronic and Communication Engineering, University College Dublin, Belfield, Dublin 4, Ireland^1

关键词: Digital holograms;    Fourier holograms;    Incoherent white light;    Orthographic projections;    Phase retrieval algorithm;    Real-world objects;    Synthetic aperture integral imaging;    Threedimensional (3-d);   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/735/1/012070/pdf
DOI  :  10.1088/1742-6596/735/1/012070

来源: IOP

【 摘 要 】

We present a new method of synthesizing a digital hologram of three-dimensional (3D) real-world objects from multiple orthographic projection images (OPI). A high-resolution multiple perspectives of 3D objects (i.e., two dimensional elemental image array) are captured under incoherent white light using synthetic aperture integral imaging (SAII) technique and their OPIs are obtained respectively. The reference beam is then multiplied with the corresponding OPI and integrated to form a Fourier hologram. Eventually, a modified phase retrieval algorithm (GS/HIO) is applied to reconstruct the hologram. The principle is validated experimentally and the results support the feasibility of the proposed method.