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- W240717103 abstract "The work presented in this thesis was performed under the EU's Framework7 (FP7) project, 'REAL3D'. The aim of this project is to develop methodsbased on digital holography for real time capture and display of 3D objects.This thesis forms a small subset of all the work done in this project. Much ofthe research work was aimed towards fullling our part of the requirementsof the REAL3D project. The central theme of the research presented inthis thesis is that of improving the performance of the digital holographicimaging system for its use in 3D display. This encompasses research intospeed up of reconstruction algorithms, understanding the inuence of noiseand developing techniques to increase resolution and angular perspectiverange in reconstructions.The main original contributions of this research work presented in this thesisare: A computer-interfaced automatic digital holographic imagingsystem employing `phase shifting' has been built. This systemis capable of recording high-quality digital holograms of a real world3D object. The object can be rotated on a rotational stage and a full360 range of perspectives can be recorded. Speckle reduction usingmoving di users can be performed to improve the image quality of thereconstructed images. A LabView based user friendly interface hasbeen developed. Novel methods based on space-time tradeo and xed pointarithmetic have been developed and implemented for speed-ing up the reconstruction algorithm used in digital holography.This has resulted in the publication of one peer-reviewed journal pub-lication and one conference proceeding [1, 2]. The inuence of additive noise, particularly quantization noisein digital holography has been studied in detail. A modelhas been developed to understand the inuence of noise on the re-constructed image quality. Based on this model, a method has beendeveloped to suppress quantization noise in a memory ecient man-ner. This work led to the publication of two peer-reviewed journalpublications [3, 4]. A novel method of removing the twin image has been devel-oped. Methods to increase the perspectives in holography based onsynthetic aperture have been implemented.Apart from these primary contributions, the author of this thesis hasalso contributed in the form of assisting in experiments, creating guresfor various papers, writing computer programs and discussions duringgroup meetings. In total, 6 peer-reviewed journal papers (3 beingprimary author) have been published and 6 conference proceedings (3being primary author) have been published. Additionally, 2 talks havebeen given at international conferences." @default.
- W240717103 created "2016-06-24" @default.
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- W240717103 date "2011-06-01" @default.
- W240717103 modified "2023-09-27" @default.
- W240717103 title "Digital hologram recordingsystems: some performanceimprovements" @default.
- W240717103 hasPublicationYear "2011" @default.
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