1. What contributions have the authors mentioned in the paper "Modulo wavelets for interferometric phase data" ?
In this paper, a modulo wavelet transform was proposed for image compression of interferometric phase maps.
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Modulo Wavelets for Interferometric Phase Data
David Blinder,Tim Bruylants,Heidi Ottevaere,Ann Dooms,Adrian Munteanu,Peter Schelkens +5 more
- 13 Jul 2014
TL;DR: In this article, a modulo wavelet transform incorporated in a JPEG 2000 architecture allows for efficient compression of interferometric phase maps, achieving over 0.5 bpp over the state-of-the-art.
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Abstract: A newly proposed modulo wavelet transform incorporated in a JPEG 2000 architecture allows for efficient compression of interferometric phase maps. Coding gains of over 0.5 bpp are reported over the state-of-the-art.
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Figures
Fig. 1. Wavelet decompositions of an interferometric phase map. The regular wavelet decomposition is shown on the left, the Modulo wavelet decomposition on the right. Phase values are represented in grayscale values: −𝜋 (black) to 𝜋 (white). 
Table 1: Lossless bitrates are expressed in average bit-per-pixel (bpp). The gain is determined as the bitrate difference between the best performing regular wavelet transform (Haar or 5/3) and the Modulo Haar wavelet.
Citations
Open access database for experimental validations of holographic compression engines
David Blinder,Ayyoub Ahar,Athanasia Symeonidou,Yafei Xing,Tim Bruylants,Colas Schreites,Béatrice Pesquet-Popescu,Frederic Dufaux,Adrian Munteanu,Peter Schelkens +9 more
- 26 May 2015
TL;DR: An open public database containing a set of computer-generated holograms is set up and the performances of two JPEG 2000-based coders are evaluated, which were modified to better cope with holographic data.
Efficient multiscale phase unwrapping methodology with modulo wavelet transform.
TL;DR: A generic framework using a novel wavelet transform that can be combined with many types of phase unwrapping algorithms is proposed, and the number of coefficients that need to be unwrapped is significantly reduced, which results in large computational gains.
30
References
Phase-shifting digital holography
Ichirou Yamaguchi,Tong Zhang +1 more
TL;DR: A new method is proposed in which the distribution of complex amplitude at a plane is measured by phase-shifting interferometry and then Fresnel transformed by a digital computer, which can reconstruct an arbitrary cross section of a three-dimensional object with higher image quality and a wider viewing angle than from conventional digital holography using an off-axis configuration.
2K
Phase-Shifting Digital Holography
TL;DR: Digital holography generally offers more flexibility than conventional holographic interferometry and speckle interferometrics because of its simple setup and easy accessibility for 3D surfaces as discussed by the authors.
1.2K
Direction-Adaptive Discrete Wavelet Transform for Image Compression
Chuo-Ling Chang,Bernd Girod +1 more
TL;DR: A direction-adaptive DWT that locally adapts the filtering directions to image content based on directional lifting is proposed that is more effective than other lifting-based approaches and is visually more pleasing.
Interferometric Measurements of Phase Singularities in the Output of a Visible Laser
Andrew White,C. P. Smith,Norman R. Heckenberg,Halina Rubinsztein-Dunlop,R. McDuff,C.O. Weiss,Chr. Tamm +6 more
TL;DR: In this paper, a simple interferometric technique was used to identify phase singularities in a continuous single longitudinal mode Na2 ring laser, which can be used to elucidate the structure of higher order stationary patterns.
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Microscopic off-axis holographic image compression with JPEG 2000
Tim Bruylants,Tim Bruylants,David Blinder,David Blinder,Heidi Ottevaere,Adrian Munteanu,Adrian Munteanu,Peter Schelkens,Peter Schelkens +8 more
TL;DR: It is shown that wavelet packet decomposition combined with directional wavelet transforms provides efficient lossy-to-lossless compression of microscopic off-axis holographic imagery.