Smart Computational Imaging (SCI) Lab

智能计算成像实验室

Structured illumination microscopy based on principal component analysis

[code download] The open source MATLAB toolbox—PCASIMtoolbox and associated dataset, as well as the corresponding user guide and demo results.

Reference:

• Qian, J., Cao, Y., Bi, Y. et al. Structured illumination microscopy based on principal component analysis. eLight 3, 4(2023). https://doi.org/10.1186/s43593-022-00035-x

  
  

Hybrid brightfield and darkfield transport of intensity approach for high-throughput quantitative phase microscopy

[code download] MATLAB source code of hybrid brightfield and darkfield transport of intensity (HBDTI) and associated dataset, as well as the corresponding user guide and demo results.

Reference:

• Lu L, Li J, Shu Y, et al, “Hybrid brightfield and darkfieldtransport of intensity approach for high-throughput quantitative phase microscopy,” Advanced Photonics, 4(5): 056002, 2022.
  

Adaptive step-size strategy for fourier ptychrography microscopy

[code download]‍ MATLAB source code to implement the adaptive step size strategy for Fourier ptychographicreconstruction. A noisy experimental FPM dataset of an USAF resolution target is also included.

Reference:

• C. Zuo, J. Sun, and Q. Chen, "Adaptive step-size strategy for noise-robust Fourier ptychographic microscopy," Optics Express 24, 20724-20744 (2016).

Optimum derivative estimation using Savitzky-Golay differentiation filter

[code download]‍ MATLAB source code for the OSF with the simulated dataset. Note in the simulation, a pure phase object is assumed (single step inverse Laplacian), if one want to retrieve the phase of an absorbing object, then two step-TIE solver based on FFT or DCT should be used instead to get better accuracy.

References:

• C. Zuo, Q. Chen, Y. Yu, A. Asundi, "Transport-of-intensity phase imaging using Savitzky-Golay differentiation filter-theory and applications," Optics Express 21, 5346-5362 (2013).

PCA based phase aberration compensation

[code download] MATLAB source code and two digital holograms of microphage cells for

Reference:

• C. Zuo, Q. Chen, W. Qu, A. Asundi, "Phase aberration compensation in digital holographic microscopy based on principal component analysis", Optics Letters 38, 1724-1726 (2013). (Selected for the Virtual Journal for Biomedical Optics);

Calibration of fringe projectionprofilometry: A comparative review

‍‍‍[code download]

Source codes of several calibration methods for fringe projection profilometry, including the linear phase-height model, the inverse linear phase-height model, the polynomial phase-height model, the governing equation based phase-height model, and the triangular stereo model where the projector is calibrated without the assistance of a calibrated camera.

Reference:

Shijie Feng, Chao Zuo, Liang Zhang,Tianyang Tao, Yan Hu, Wei Yin, Jiaming Qian, and Qian Chen, “Calibration offringe projection profilometry: A comparative review,” Optics and Lasers in Engineering 143, 106622 (2021).

Real-time 3-D measurement with 2+2 phase shifting algorithm

[pattern download] 4 patterns for 2+2 phase shifting algorithm (800*600 pixel resolution for ACER 1161PA)

    Reference:

• C. Zuo, Q. Chen, G. Guo, S. Feng, and F. Feng, "High-speed three-dimensional profilometry for multiple objects with complex shapes," Optics Express 20(17), 19493-19510 (2012);

  
  

Display and detail enhancement for high-dynamic-range infrared images (DDE)

[code download] Source code along with two high-dynamic-range (HDR) infrared images for

Reference:

• C. Zuo, Q. Chen, N. Liu, J. Ren, X. Sui, "Display and detail enhancement for high-dynamic-range infrared images"   Opt Eng 50, 127401 (2011).
  

Scene-based nonuniformity correction algorithm based on interframe registration (IRLMS)

[code download] Source code along with one raw infrared video sequence corrupted by FPN for IRLMS algorithm (as well as its improved verison). Note that the masked phase correlation sub-pixel registration algorithm is also included.

References：

• C. Zuo, Q. Chen, G. Gu, X. Sui, "Scene -based nonuniformity correction algorithm based on interframe registration," JOSA A 28, 1164-1176 (2011).

• C. Zuo, Q. Chen, G. Gu, X. Sui, J. Ren, "Improved interframe registration based nonuniformity correction for focal plane arrays," Infrared Phys Techn 55, 263-269 (2012).

Range Limited Bi-Histogram Equalization (RLBHE)

[code download] Source code and test images for implementing RLBHE

• C. Zuo, Q. Chen, X. Sui, "Range Limited Bi-Histogram Equalization for image contrast enhancement", Optik-International Journal for Light and Electron Optics 124(5), 425-431 (2013).