Shot Noise and Fixed-Pattern Noise Effects on Digital Hologram Reconstruction

Cheremkhin, Pavel A.; Evtikhiev, Nikolay N.; Krasnov, Vitaly V.; Rodin, Vladislav G.; Starikov, Rostislav S.

doi:10.1016/j.optlaseng.2020.106461

Cited by 12 publications

(6 citation statements)

References 64 publications

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“…The laser wavelength is 632.8 nm, the multiplexed hologram size is 1000 × 1000 pixels, and the pixel size is 3.45 × 3.45 µm. The random Gaussian white noise with the mean 3.5 and the standard deviation 1 is added to simulate the noise N [ 37 ].…”

Section: Resultsmentioning

confidence: 99%

Quantitative phase image stitching guided by reconstructed intensity images in one-shot double field of view multiplexed digital holographic microscopy

Chen,

Gao,

Huang

et al. 2024

Biomed. Opt. Express

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In digital holographic microscopy (DHM), achieving large field of view (FOV) imaging while maintaining high resolution is critical for quantitative phase measurements of biological cell tissues and micro-nano structures. We present a quantitative phase image stitching guided by reconstructed intensity images in one-shot double FOV multiplexed DHM. Double FOVs are recorded simultaneously through frequency division multiplexing; intensity feature pairs are accurately extracted by multi-algorithm fusion; aberrations and non-common baselines are effectively corrected by preprocessing. Experimental results show that even if phase images have coherent noise, complex aberrations, low overlap rate and large size, this method can achieve high-quality phase stitching.

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Section: Resultsmentioning

confidence: 99%

Quantitative phase image stitching guided by reconstructed intensity images in one-shot double field of view multiplexed digital holographic microscopy

Chen,

Gao,

Huang

et al. 2024

Biomed. Opt. Express

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“…Holograms were synthesized using the FFT-based Fresnel approximation method (single-FFT approach) [71,72]. The object wave was numerically propagated, then, the normally falling plane reference beam was added, the digital hologram synthesized, and an inverse FFT-based Fresnel approximation method (single-FFT approach) was used for the image reconstruction [73]. Images of flat objects or elements of a 3D-scene were reconstructed using the Fast Fourier Transform (FFT)-based Fresnel approximation method (single-FFT approach) [71,72]:…”

Section: Numerical Experiments Conditionsmentioning

confidence: 99%

“…Ho synthesized using the FFT-based Fresnel approximation method (single-F [71,72]. The object wave was numerically propagated, then, the normally reference beam was added, the digital hologram synthesized, and an inve Fresnel approximation method (single-FFT approach) was used for the struction [73]. For verifying the LDE method on model holograms, additionally off-axis computergenerated digital holograms were used.…”

Section: Numerical Experiments Conditionsmentioning

confidence: 99%

Adaptive Digital Hologram Binarization Method Based on Local Thresholding, Block Division and Error Diffusion

et al. 2022

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High-speed optical reconstruction of 3D-scenes can be achieved using digital holography with binary digital micromirror devices (DMD) or a ferroelectric spatial light modulator (fSLM). There are many algorithms for binarizing digital holograms. The most common are methods based on global and local thresholding and error diffusion techniques. In addition, hologram binarization is used in optical encryption, data compression, beam shaping, 3D-displays, nanofabrication, materials characterization, etc. This paper proposes an adaptive binarization method based on a combination of local threshold processing, hologram division into blocks, and error diffusion procedure (the LDE method). The method is applied for binarization of optically recorded and computer-generated digital holograms of flat objects and three-dimensional scenes. The quality of reconstructed images was compared with different methods of error diffusion and thresholding. Image reconstruction quality was up to 22% higher by various metrics than that one for standard binarization methods. The optical hologram reconstruction using DMD confirms the results of the numerical simulations.

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“…• zero-order and twin image [32,33]; and • digital camera noise and the characteristics of the signal registration [34][35][36][37][38][39][40][41][42][43][44][45].…”

Section: Negative Factors In Digital Holographymentioning

confidence: 99%

“…Speckle noise [1,[29][30][31] and unwanted (zero-order and twin image) diffraction orders [32,33] are the main negative factors. Also, recording systems have their own noises and features, such as discretization and pixels fill factors [34,35], temporal [36][37][38][39] and fixed-pattern [39,40] camera noises, quantization noise [41][42][43], dynamic range [39,44], and bit depth [45].…”

Section: Introductionmentioning

confidence: 99%

An optical-digital method of noise suppression in digital holography

Cheremkhin

Evtikhiev²,

Kozlov³

et al. 2022

J. Opt.

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Digital holography is widely used for the fast and accurate reconstruction of objects and 3D-scenes characteristics: intensity, depth locations, density, temperature, refractive index, etc. There are various types of noise in digital holography, including speckle noise, zero order and twin image, camera shot noise and fixed-pattern noise. Therefore, additional hologram processing is required to obtain a high-quality reconstructed image. This paper proposes an optical-digital method of noise suppression in digital holography. First, a set of uncorrelated holograms is registered. The reconstructed images are treated as a 3D array, to which a 3D filter is then applied. A 3D median filter is used in this study; however, other 3D filters based on weighted average can be utilized also. The proposed method was verified using computer-generated and optically registered digital Fresnel holograms. Even with a small number of images, the method significantly improves the quality: the normalized standard deviation was decreased by up to 3-10 times and speckle contrast was reduced by more than six times. Registration of only ten holograms is sufficient to obtain a quality close to the maximum. The flexibility of the proposed method allows for varying the ratio of the reconstruction quality to the processing time.

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Shot Noise and Fixed-Pattern Noise Effects on Digital Hologram Reconstruction

Cited by 12 publications

References 64 publications

Quantitative phase image stitching guided by reconstructed intensity images in one-shot double field of view multiplexed digital holographic microscopy

Quantitative phase image stitching guided by reconstructed intensity images in one-shot double field of view multiplexed digital holographic microscopy

Adaptive Digital Hologram Binarization Method Based on Local Thresholding, Block Division and Error Diffusion

An optical-digital method of noise suppression in digital holography

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