Iterative Fourier Transform Optimization of Computer Generated Fourier Holograms
Holograms are created by recording the interference pattern obtained between the object called object wave and a coherent reference wave. Computer-Generated Holography (CGH) deals with the creation of holograms with the aid of computers. CGH makes use of the wave theory of light to represent both the object and reference waves. CGH does not require actual objects to create the hologram as long as the light scattered or diffracted off the object could be represented mathematically. The proposed work describes a method for creating holograms with the help of a computer along with the technique to reconstruct its image. Iterative Fourier Transform algorithm is used to optimize computer-generated Fourier holograms. Root mean square error is measured to evaluate the quality of the reconstructed image.
KeywordsHologram Fourier hologram Fourier transform Interference
Technical support from C-DIT (Centre for Development of Imaging Technology), Government of Kerala and partial financial support from KSCSTE (Kerala State Council for Science Technology and Environment), Government of Kerala are thankfully acknowledged.
- 1.Ambadiyil S, Prakash D, Sheeja MK, Pillai M (2017) Secure storage and analysis of fingerprints for criminal investigation using holographic techniques. Mater Today Proc Elsevier J 4(2) Part C:4389–4395Google Scholar
- 4.Jeong TH, Basic principles and the applications of Holography. Lake Forest College, Lake Forest, llinois; Fundamentals of Photonics, SPIE Digital LibraryGoogle Scholar
- 5.Bulanovs A, Gerbreders S (2013) Advanced concept for creation of security holograms. Latvian J Phys Tech Sci 50(6):61–70Google Scholar
- 6.Yasuhiro T, Leandro B, Martinez J (2013) An iterative Fourier transform algorithm for digital hologram generation using phase only information and its implementation in a fixed-point digital signal processor. J Elsevier 5416–5421Google Scholar