2019
DOI: 10.1016/j.optlaseng.2018.11.019
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Comparative appraisal of global and local thresholding methods for binarisation of off-axis digital holograms

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Cited by 48 publications
(32 citation statements)
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“…Secondly, this diffraction order is filtered by aperture, while others are blocked. Although there are various techniques for binarization of necessary patterns [28][29][30][31][32] , computer-generated Lee holography 33 is one of the most reliable methods to perform fast and efficient generation of binary patterns.…”
Section: Discussionmentioning
confidence: 99%
“…Secondly, this diffraction order is filtered by aperture, while others are blocked. Although there are various techniques for binarization of necessary patterns [28][29][30][31][32] , computer-generated Lee holography 33 is one of the most reliable methods to perform fast and efficient generation of binary patterns.…”
Section: Discussionmentioning
confidence: 99%
“…The different methods of compressing holographic image or video files 1013 can be divided into three main groups based on the following:image and video compression standards (JPEG, HEVC, etc.) 1320 , including additional HEVC-coding optimization 18 and neural network post-processing 19 ;vector and scalar methods of quantization (iterative or noniterative) 10,2129 , including phase-difference-based implementation 28 and local and global thresholding binarization 29 ; andwavelet transforms 11,3041 , including the cosine transform 32,33 and the Fresnelet transform 34 .However, several other compression methods can be considered separately from the above-mentioned groups: for example, scanning methods 33,42 and generative approaches 43 . A number of methods can be assigned to different groups of techniques also.…”
Section: Introductionmentioning
confidence: 99%
“…), terahertz systems 56 , 3D diffuse grayscale 57 and color 58 objects coding and imaging, computer-generated depth images representation 59 , next generation 3DTV applications 35,60 , quick volume scene displaying 61 , interferometry 15 , data multiplexing 62 , etc. Compression of off-axis digital holograms by binarization or direct quantization is used for visualization of optical scanning holographic data 63,64 , digital micromirror (DMD) applications 29,64 , fast printing and watermarking 65 , etc.There are two main aims of the paper:to compress single off-axis digital holograms using separation of the filtered spectrum into R/I parts andto perform a comparative analysis of the obtained results with those for compression by separation of the spectrum into A/P parts.Hologram compression based on a combination of a number of methods is analyzed, specifically,hologram frequency filtering,separation of the obtained spectrum into components,the wavelet transform, andadditional processing by quantization and thresholding.…”
Section: Introductionmentioning
confidence: 99%
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