Wavelet compression of digital holograms: Towards a view-dependent framework

Viswanathan, Kartik; Gioia, Patrick; Morin, Luce

doi:10.1117/12.2027199

Cited by 28 publications

(24 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Lee et al [40] used H.264/AVC to encode the numerical reconstructions of sub-holograms corresponding to specific viewing angles. Extending this approach, directional scalability was investigated by Viswanathan et al [41] and El Rhammad et al [42,43] using Gabor/Morlet wavelet dictionaries and a matching pursuit approach, providing a practical tool actually exhibiting the duality between light rays and local spatial frequencies.…”

Section: Towards Content-aware Codingmentioning

confidence: 99%

JPEG Pleno: Providing representation interoperability for holographic applications and devices

et al. 2019

Self Cite

View full text Add to dashboard Cite

Guaranteeing interoperability between devices and applications is the core role of standards organizations. Since its first JPEG standard in 1992, the Joint Photographic Experts Group (JPEG) has published several image coding standards that have been successful in a plethora of imaging markets. Recently, these markets have become subject to potentially disruptive innovations owing to the rise of new imaging modalities such as light fields, point clouds, and holography. These so‐called plenoptic modalities hold the promise of facilitating a more efficient and complete representation of 3D scenes when compared to classic 2D modalities. However, due to the heterogeneity of plenoptic products that will hit the market, serious interoperability concerns have arisen. In this paper, we particularly focus on the holographic modality and outline how the JPEG committee has addressed these tremendous challenges. We discuss the main use cases and provide a preliminary list of requirements. In addition, based on the discussion of real‐valued and complex data representations, we elaborate on potential coding technologies that range from approaches utilizing classical 2D coding technologies to holographic content‐aware coding solutions. Finally, we address the problem of visual quality assessment of holographic data covering both visual quality metrics and subjective assessment methodologies.

show abstract

Section: Towards Content-aware Codingmentioning

confidence: 99%

JPEG Pleno: Providing representation interoperability for holographic applications and devices

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…In some cases, the coding techniques that have been used for holograms compression are the current standards for image and video compression [38], [39]. In some researches, new elements have been added to the compression process in order to improve performance [39]- [41], and also wavelet transforms have been proposed, different from the standard ones, such as the Gabor wavelet [42] and the Morlet wavelet [43].…”

Section: Digital Holography Data Compressionmentioning

confidence: 99%

Digital holography data compression

Corda¹

2019

Telfor J

View full text Add to dashboard Cite

Digital holography processing is a research topic related to the development of novel visual immersive applications. The huge amount of information conveyed by a digital hologram and the different properties of holographic data with respect to conventional photographic data require a comprehension of the performances and limitations of current image and video standard techniques. This paper proposes an architecture for objective evaluation of the performances of the state-of-the-art compression techniques applied to digital holographic data.

show abstract

“…Thus, no extra information will be coded in this respect. Some recent publications also have confirmed the importance of orientation and high frequencies in holography by using Gabor wavelets, evaluated at multiple orientations, 12 or by using the wavelet-bandelets transform. 27 However, these publications mainly used coefficient thresholding and did not provide complete coding frameworks.…”

mentioning

confidence: 97%

“…The reasons are (1) the lack of support for integer taps that enable lossless compression, (2) the inherent presence of complex-valued coefficients, even for real-valued off-axis holograms, (3) the occasional requirement of zero-padding to correctly simulate Fresnel *Address all correspondence to: David Blinder, E-mail: dblinder@etro.vub.ac .be propagation in order to avoid aliasing, and (4) the need to predetermine a focus depth parameter prior to compression of the data. Several other analysis functions have been investigated as well; one notable example is the use of Gabor wavelets 12 for hologram coding: their excellent time-frequency uncertainty bounds and orientability allow for effective descriptions of localized frequency content. Unfortunately, Gabor wavelets are not reversible and form an overcomplete representation, requiring some coefficient selection method (such as using the ridge of the Gabor wavelet transform 12 ).…”

Section: Introductionmentioning

confidence: 99%

“…Several other analysis functions have been investigated as well; one notable example is the use of Gabor wavelets 12 for hologram coding: their excellent time-frequency uncertainty bounds and orientability allow for effective descriptions of localized frequency content. Unfortunately, Gabor wavelets are not reversible and form an overcomplete representation, requiring some coefficient selection method (such as using the ridge of the Gabor wavelet transform 12 ). Moreover, the wide range of applications and recording setup parameters of DHM typically make the compression requirements dependent on the use case.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

JPEG 2000-based compression of fringe patterns for digital holographic microscopy

et al. 2014

View full text Add to dashboard Cite

Abstract. With the advent of modern computing and imaging technologies, digital holography is becoming widespread in various scientific disciplines such as microscopy, interferometry, surface shape measurements, vibration analysis, data encoding, and certification. Therefore, designing an efficient data representation technology is of particular importance. Off-axis holograms have very different signal properties with respect to regular imagery, because they represent a recorded interference pattern with its energy biased toward the high-frequency bands. This causes traditional images' coders, which assume an underlying 1∕f 2 power spectral density distribution, to perform suboptimally for this type of imagery. We propose a JPEG 2000-based codec framework that provides a generic architecture suitable for the compression of many types of off-axis holograms. This framework has a JPEG 2000 codec at its core, extended with (1) fully arbitrary wavelet decomposition styles and (2) directional wavelet transforms. Using this codec, we report significant improvements in coding performance for off-axis holography relative to the conventional JPEG 2000 standard, with Bjøntegaard delta-peak signal-to-noise ratio improvements ranging from 1.3 to 11.6 dB for lossy compression in the 0.125 to 2.00 bpp range and bit-rate reductions of up to 1.6 bpp for lossless compression.

show abstract

Wavelet compression of digital holograms: Towards a view-dependent framework

Cited by 28 publications

References 14 publications

JPEG Pleno: Providing representation interoperability for holographic applications and devices

JPEG Pleno: Providing representation interoperability for holographic applications and devices

Digital holography data compression

JPEG 2000-based compression of fringe patterns for digital holographic microscopy

Contact Info

Product

Resources

About