Coherent Measurement Techniques

Our research objective is based on the development and application of coherent optical techniques for 3D-shape measurement, deformation measurement, and the determination of material properties of technical objects and biological tissue.

Aside from the quantitative measurements of shape and deformation, methods for non-destructive material testing are also developed and applied.

Quantitative phase imaging
Quantitative phase imaging
Non-destructive testing of technical objects and artworks
Non-destructive testing of technical objects and artworks
Medical imaging
Medical imaging

Current Projects

Completed Projects

Publications

  1. 2021

    1. S. Ludwig, P. Ruchka, G. Pedrini, X. Peng, and W. Osten, “Scatter-plate microscopy with spatially coherent illumination and temporal scatter modulation,” Opt. Express, vol. 29, Art. no. 3, Feb. 2021, doi: 10.1364/OE.412047.
    2. S. Ludwig, G. Pedrini, X. Peng, and W. Osten, “Single-pixel scatter-plate microscopy,” Optics Letters, vol. 46, Art. no. 10, 2021, doi: https://doi.org/10.1364/OL.420593.

  2. 2020

    1. F. Wang et al., “Phase imaging with an untrained neural network,” Light: Science & Applications, vol. 9, Art. no. 1, May 2020, doi: 10.1038/s41377-020-0302-3.
    2. J. Ornik et al., “Repeatability of material parameter extraction of liquids from transmission terahertz time-domain measurements,” Opt. Express, vol. 28, Art. no. 19, Sep. 2020, doi: 10.1364/OE.403159.
    3. Z. Meng et al., “Numerical dark-field imaging using deep-learning,” Opt. Express, vol. 28, Art. no. 23, Nov. 2020, doi: 10.1364/OE.401786.
    4. D. Lu, M. Liao, W. He, G. Pedrini, W. Osten, and X. Peng, “Tracking moving object beyond the optical memory effect,” Optics and Lasers in Engineering, vol. 124, p. 105815, Jan. 2020, doi: 10.1016/j.optlaseng.2019.105815.
    5. Y. Ganjkhani, A. Calabuig, G. Pedrini, and A.-R. Moradi, “Oblique illumination lateral shearing digital holographic microscopy,” Journal of Optics, vol. 22, Art. no. 9, Jul. 2020, doi: 10.1088/2040-8986/aba4c0.
    6. Z. Cai, G. Pedrini, W. Osten, X. Liu, and X. Peng, “Single-shot structured-light-field three-dimensional imaging,” Opt. Lett., vol. 45, Art. no. 12, Jun. 2020, doi: 10.1364/OL.393911.
    7. Z. Cai, X. Liu, G. Pedrini, W. Osten, and X. Peng, “Structured-light-field 3D imaging without phase unwrapping,” Optics and Lasers in Engineering, vol. 129, p. 106047, Jun. 2020, doi: 10.1016/j.optlaseng.2020.106047.
    8. Z. Cai, X. Liu, G. Pedrini, W. Osten, and X. Peng, “Light-field depth estimation considering plenoptic imaging distortion,” Opt. Express, vol. 28, Art. no. 3, Feb. 2020, doi: 10.1364/OE.385285.
    9. Z. Cai, J. Chen, G. Pedrini, W. Osten, X. Liu, and X. Peng, “Lensless light-field imaging through diffuser encoding,” Light: Science & Applications, vol. 9, Art. no. 1, Aug. 2020, doi: 10.1038/s41377-020-00380-x.
    10. I. Alekseenko et al., “Residual Stress Evaluation in Ceramic Coating Under Industrial Conditions by Digital Holography,” IEEE Transactions on Industrial Informatics, vol. 16, Art. no. 2, Feb. 2020, doi: 10.1109/TII.2019.2939972.

  3. 2019

    1. I. Shevkunov, V. Katkovnik, D. Claus, G. Pedrini, N. V. Petrov, and K. Egiazarian, “Spectral Object Recognition in Hyperspectral Holography with Complex-Domain Denoising,” Sensors, vol. 19, Art. no. 23, Nov. 2019, doi: 10.3390/s19235188.
    2. G. Pedrini, I. Alekseenko, G. Jagannathan, M. Kempenaars, G. Vayakis, and W. Osten, “Feasibility study of digital holography for erosion measurements under extreme environmental conditions inside the International Thermonuclear Experimental Reactor tokamak ınvited,” Appl. Opt., vol. 58, Art. no. 5, Feb. 2019, doi: 10.1364/AO.58.00A147.
    3. S. Ludwig, B. L. Teurnier, G. Pedrini, X. Peng, and W. Osten, “Image reconstruction and enhancement by deconvolution in scatter-plate microscopy,” Opt. Express, vol. 27, Art. no. 16, Aug. 2019, doi: 10.1364/OE.27.023049.
    4. M. Liao, D. Lu, W. He, G. Pedrini, W. Osten, and X. Peng, “Improving reconstruction of speckle correlation imaging by using a modified phase retrieval algorithm with the number of nonzero-pixels constraint,” Appl. Opt., vol. 58, Art. no. 2, Jan. 2019, doi: 10.1364/AO.58.000473.
    5. Z. Cai, X. Liu, G. Pedrini, W. Osten, and X. Peng, “Unfocused plenoptic metric modeling and calibration,” Opt. Express, vol. 27, Art. no. 15, Jul. 2019, doi: 10.1364/OE.27.020177.
    6. Z. Cai, X. Liu, G. Pedrini, W. Osten, and X. Peng, “Accurate depth estimation in structured light fields,” Opt. Express, vol. 27, Art. no. 9, Apr. 2019, doi: 10.1364/OE.27.013532.

  4. 2018

    1. M. Zhou, A. K. Singh, G. Pedrini, W. Osten, J. Min, and B. Yao, “Tunable output-frequency filter algorithm for imaging through scattering media under LED illumination,” Optics Communications, vol. 410, pp. 160–163, Mar. 2018, doi: 10.1016/j.optcom.2017.10.018.
    2. W. Osten, G. Pedrini, R. Gadow, and K. Körner, “Optisches Verfahren und Anordnung zur Eigenspannungsmessung, insbesondere an beschichteten Objekten,” Aug. 2018 [Online]. Available: https://depatisnet.dpma.de/DepatisNet/depatisnet?action=bibdat&docid=DE102015006697B4&famSearchFromHitlist=1
    3. K. Körner, A. Röseler, D. Claus, and W. Osten, “Vorrichtung und Verfahren zur spektroskopischen Ellipsometrie, insbesondere zur spektroskopischen Infrarot-Ellipsometrie,” Feb. 2018 [Online]. Available: https://depatisnet.dpma.de/DepatisNet/depatisnet?action=bibdat&docid=EP000003026422B1&famSearchFromHitlist=1
    4. D. Claus, G. Pedrini, D. Buchta, and W. Osten, “Accuracy enhanced and synthetic wavelength adjustable optical metrology via spectrally resolved digital holography,” JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, vol. 35, Art. no. 4, Apr. 2018, doi: 10.1364/JOSAA.35.000546.
    5. D. Claus, J. Hennenlotter, Q. Liting, G. Pedrini, A. Stenzl, and W. Osten, “Variable Wavefront Curvature Phase Retrieval Compared to Off-Axis Holography and Its Useful Application to Support Intraoperative Tissue Discrimination,” Applied Sciences, vol. 8, Art. no. 11, Nov. 2018, doi: 10.3390/app8112147.
    6. V. Cazac et al., “Surface relief and refractive index gratings patterned in chalcogenide glasses and studied by off-axis digital holography,” APPLIED OPTICS, vol. 57, Art. no. 3, Jan. 2018, doi: 10.1364/AO.57.000507.
    7. Z. Cai et al., “Light-field-based absolute phase unwrapping,” Opt. Lett., vol. 43, Art. no. 23, Dec. 2018, doi: 10.1364/OL.43.005717.
    8. D. Buchta, H. Serbes, D. Claus, G. Pedrini, and W. Osten, “Soft tissue elastography via shearing interferometry,” JOURNAL OF MEDICAL IMAGING, vol. 5, Art. no. 4, Oct. 2018, doi: 10.1117/1.JMI.5.4.046001.
    9. D. Buchta, C. Heinemann, G. Pedrini, C. Krekel, and W. Osten, “Combination of FEM simulations and shearography for defect detection on artwork,” STRAIN, vol. 54, Art. no. 3, Jun. 2018, doi: 10.1111/str.12269.
    10. E. Achimova, V. Abaskin, D. Claus, G. Pedrini, I. Shevkunov, and V. Katkovnik, “Noise minimized high resolution digital holographic microscopy applied to surface topography,” Computer Optics, vol. 42, pp. 267–272, Mar. 2018, doi: 10.18287/2412-6179-2018-42-2-267-272.
    11. E. Achimova, V. Abaskin, D. Claus, G. Pedrini, I. Shevkunov, and V. Katkovnik, “Noise minimised high resolution digital holographic microscopy applied to surface topography,” Computer Optics, vol. 42, Art. no. 2, Jul. 2018, doi: 10.18287/2412-6179-2018-42-2-267-272.

  5. 2017

    1. M. Zhou, A. K. Singh, G. Pedrini, W. Osten, J. Min, and B. Yao, “Speckle-correlation imaging through scattering media with hybrid bispectrum-iteration algorithm,” OPTICAL ENGINEERING, vol. 56, Art. no. 12, Dec. 2017, doi: 10.1117/1.OE.56.12.123102.
    2. A. K. Singh, G. Pedrini, M. Takeda, and W. Osten, “Scatter-plate microscope for lensless microscopy with diffraction limited resolution,” Scientific Reports, vol. 7, Art. no. 1, Sep. 2017, doi: 10.1038/s41598-017-10767-3.
    3. A. K. Singh, G. Pedrini, W. Osten, and M. Takeda, “Diffraction-Limited Microscopy with a Simple Scatter Plate,” Optics & Photonics News, Art. no. 46, Dec. 2017, [Online]. Available: https://www.osa-opn.org/home/articles/volume_28/december_2017/extras/diffraction-limited_microscopy_with_a_simple_scatt/
    4. A. K. Singh, D. N. Naik, G. Pedrini, M. Takeda, and W. Osten, “Exploiting scattering media for exploring 3D objects,” LIGHT-SCIENCE & APPLICATIONS, vol. 6, Feb. 2017, doi: 10.1038/lsa.2016.219.
    5. C. S. Narayanamurthy, G. Pedrini, and W. Osten, “Digital holographic photoelasticity,” APPLIED OPTICS, vol. 56, Art. no. 13, May 2017, doi: 10.1364/AO.56.00F213.
    6. J. Liu, D. Claus, T. Xu, T. Kessner, A. Herkommer, and W. Osten, “Light field endoscopy and its parametric description,” OPTICS LETTERS, vol. 42, Art. no. 9, May 2017, doi: 10.1364/OL.42.001804.
    7. B. Frank et al., “Short-range surface plasmonics: Localized electron emission dynamics from a 60-nm spot on an atomically flat single-crystalline gold surface,” Science Advances, vol. 3, Art. no. 7, 2017, doi: 10.1126/sciadv.1700721.
    8. D. Claus, C. Reichert, and A. Herkommer, “Focus and perspective adaptive digital surgical microscope:optomechanical design and experimental implementation,” JOURNAL OF BIOMEDICAL OPTICS, vol. 22, Art. no. 5, May 2017, doi: 10.1117/1.JBO.22.5.056007.
    9. D. Claus, G. Pedrini, and W. Osten, “Iterative phase retrieval based on variable wavefront curvature,” APPLIED OPTICS, vol. 56, Art. no. 13, May 2017, doi: 10.1364/AO.56.00F134.
    10. D. Claus et al., “Large-field-of-view optical elastography using digital image correlation for biological soft tissue investigation (erratum),” Journal of Medical Imaging, vol. 4, Art. no. 014505, Jun. 2017, doi: 10.1117/1.JMI.4.2.029801.

  6. 2016

    1. P. Weidmann, U. Weber, S. Schmauder, G. Pedrini, and W. Osten, “Numerical calculation of temperature and surface topology during a laser ablation process for ceramic coatings,” MECCANICA, vol. 51, Art. no. 2, SI, Feb. 2016, doi: 10.1007/s11012-015-0220-2.
    2. M. Takeda, A. K. Singh, D. N. Naik, G. Pedrini, and W. Osten, “Holographic Correloscopy-Unconventional Holographic Techniques For Imaging a Three-Dimensional Object Through an Opaque Diffuser or Via a Scattering Wall: A Review,” IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS, vol. 12, Art. no. 4, Aug. 2016, doi: 10.1109/TII.2015.2503641.
    3. A. K. Singh, G. Pedrini, X. Peng, and W. Osten, “Nanoscale measurement of in-plane and out-of-plane displacements of microscopic object by sensor fusion,” OPTICAL ENGINEERING, vol. 55, Art. no. 12, Dec. 2016, doi: 10.1117/1.OE.55.12.121722.
    4. G. Pedrini et al., “Residual stress analysis of ceramic coating by laser ablation and digital holography,” Experimental mechanics, vol. 56, Art. no. 5, 2016, doi: 10.1007/s11340-015-0120-3.
    5. S. Mahajan et al., “Wide-Field Lensless 3D Imaging and Visualization of Micro-objects,” JOURNAL OF DISPLAY TECHNOLOGY, vol. 12, Art. no. 11, Nov. 2016, doi: 10.1109/JDT.2016.2595758.
    6. D. Khodadad, A. K. Singh, G. Pedrini, and M. Sjodahl, “Full-field 3D deformation measurement: comparison between speckle phase and displacement evaluation,” APPLIED OPTICS, vol. 55, Art. no. 27, Sep. 2016, doi: 10.1364/AO.55.007735.

  7. 2015

    1. J. Zheng, G. Pedrini, P. Gao, B. Yao, and W. Osten, “Autofocusing and resolution enhancement in digital holographic microscopy by using speckle-illumination,” JOURNAL OF OPTICS, vol. 17, Art. no. 8, Aug. 2015, doi: 10.1088/2040-8978/17/8/085301.
    2. D. Buchta, N. Hein, G. Pedrini, C. Krekel, and W. Osten, “Artwork Inspection by Shearography with Adapted Loading,” EXPERIMENTAL MECHANICS, vol. 55, Art. no. 9, Nov. 2015, doi: 10.1007/s11340-015-0070-9.

  8. 2014

    1. A. K. Singh, D. N. Naik, G. Pedrini, M. Takeda, and W. Osten, “Looking through a diffuser and around an opaque surface: A holographic approach,” Opt. Express, vol. 22, Art. no. 7, Apr. 2014, doi: 10.1364/OE.22.007694.
    2. A. K. Singh, A. Faridian, P. Gao, G. Pedrini, and W. Osten, “Quantitative phase imaging using a deep UV LED source,” Opt. Lett., vol. 39, Art. no. 12, Jun. 2014, doi: 10.1364/OL.39.003468.
    3. W. Osten et al., “Recent advances in digital holography \Invited\,” Appl. Opt., vol. 53, Art. no. 27, Sep. 2014, doi: 10.1364/AO.53.000G44.
    4. D. N. Naik, G. Pedrini, M. Takeda, and W. Osten, “Spectrally resolved incoherent holography: 3D spatial and spectral imaging using a Mach&\#x2013;Zehnder radial-shearing interferometer,” Opt. Lett., vol. 39, Art. no. 7, Apr. 2014, doi: 10.1364/OL.39.001857.
    5. X. Li, G. Pedrini, and Y. Fu, “Optical Metrology under Extreme Conditions,” The Scientific World Journal, vol. 2014, p. 1, 2014, [Online]. Available: http://dx.doi.org/10.1155/2014/263603
    6. M. P. Georges et al., “Combined holography and thermography in a single sensor through image-plane holography at thermal infrared wavelengths,” Opt. Express, vol. 22, Art. no. 21, Oct. 2014, doi: 10.1364/OE.22.025517.
    7. P. Gao, G. Pedrini, C. Zuo, and W. Osten, “Phase retrieval using spatially modulated illumination,” Opt. Lett., vol. 39, Art. no. 12, Jun. 2014, doi: 10.1364/OL.39.003615.
    8. Y. Fu, G. Pedrini, and X. Li, “Interferometric Dynamic Measurement: Techniques Based on High-Speed Imaging or a Single Photodetector,” The Scientific World Journal, vol. 2014, p. 14, 2014, [Online]. Available: http://dx.doi.org/10.1155/2014/232906
    9. A. Faridian, G. Pedrini, and W. Osten, “Opposed-view dark-field digital holographic microscopy,” Biomed. Opt. Express, vol. 5, Art. no. 3, Mar. 2014, doi: 10.1364/BOE.5.000728.
    10. A. Anand et al., “Single beam Fourier transform digital holographic quantitative phase microscopy,” Appl. Phys. Lett., vol. 104, Art. no. 10, Mar. 2014, doi: 10.1063/1.4868533.

  9. 2013

    1. Y. Zhang, G. Situ, G. Pedrini, D. Wang, B. Javidi, and W. Osten, “Application of short-coherence lensless Fourier-transform digital holography in imaging through diffusive medium,” Optics Communications, vol. 286, pp. 56–59, Jan. 2013, doi: 10.1016/j.optcom.2012.07.057.
    2. J.-F. Vandenrijt et al., “Mobile speckle interferometer in the long-wave infrared for aeronautical nondestructive testing in field conditions,” Optical Engineering, vol. 52, Art. no. 10, Apr. 2013, doi: 10.1117/1.oe.52.10.101903.
    3. D. N. Naik, G. Pedrini, and W. Osten, “Recording of incoherent-object hologram as complex spatial coherence function using Sagnac radial shearing interferometer and a Pockels cell,” Opt. Express, vol. 21, Art. no. 4, Feb. 2013, doi: 10.1364/OE.21.003990.
    4. J. Ma, C. Yuan, G. Situ, G. Pedrini, and W. Osten, “Resolution enhancement in digital holographic microscopy with structured illumination,” Chin. Opt. Lett., vol. 11, Art. no. 9, Sep. 2013, [Online]. Available: http://col.osa.org/abstract.cfm?URI=col-11-9-090901
    5. C. Joenathan, A. Bernal, G. Pedrini, and W. Osten, “Radial shear interferometer with holographic lenses coupled with a spatial Fourier transform method suitable for static and dynamic measurements,” Optical Engineering, vol. 52, p. 5603–, Mar. 2013, doi: 10.1117/1.OE.52.3.035603.
    6. P. Gao, G. Pedrini, and W. Osten, “Structured illumination for resolution enhancement and autofocusing in digital holographic microscopy,” Opt. Lett., vol. 38, Art. no. 8, Apr. 2013, doi: 10.1364/OL.38.001328.
    7. P. Gao, G. Pedrini, and W. Osten, “Phase retrieval with resolution enhancement by using structured illumination,” Opt. Lett., vol. 38, Art. no. 24, Dec. 2013, doi: 10.1364/OL.38.005204.
    8. A. Faridian, G. Pedrini, and W. Osten, “High-contrast multilayer imaging of biological organisms through dark-field digital refocusing,” 2013, doi: 10.1117/1.JBO.18.8.086009.
    9. P. Almoro, G. Pedrini, W. Osten, and C. S. Narayanamurthy, “Analysis of Bessel beam propagation in free space using digital holographic microscopy,” Optik, vol. 124, Art. no. 14, Jul. 2013, doi: 10.1016/j.ijleo.2012.06.012.
    10. I. Alexeenko et al., “Nondestructive testing by using long-wave infrared interferometric techniques with CO2 lasers and microbolometer arrays,” Appl. Opt., vol. 52, Art. no. 1, Jan. 2013, doi: 10.1364/AO.52.000A56.

Group leader

This image shows Giancarlo Pedrini

Giancarlo Pedrini

Dr.

Research Assistant

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