Article
Engineering, Electrical & Electronic
Tao Liu, Jiahao Liu, Dong Li, Shan Tan
Summary: Structured illumination microscopy (SIM) enhances resolving power beyond the optical diffraction limit using patterned illuminations. Current end-to-end deep learning techniques for SIM image reconstruction have moderate fidelity. We propose a dual-domain learning strategy called DDL-SIM, which simultaneously learns to reconstruct SIM images from raw images in both spatial and frequency domains, narrowing the reconstruction gaps and improving the recovery of modulated frequencies and fine structures. Experimental results demonstrate that DDL-SIM significantly improves reconstruction fidelity and exhibits robustness against artifacts.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2023)
Article
Engineering, Civil
Yuchen Liu, Fang Liu, Wei Liu, Yucheng Huang
Summary: Timely and accurately detecting and rehabilitating road surface defects is crucial for road safety and cost-effective maintenance. This paper proposes a novel target detection model called YOLO-SST, based on YOLOv5, which improves pavement distress feature extraction. The YOLO-SST model incorporates a Shuffle Attention mechanism, Swin-Transformer encoder blocks, and transfer learning on a self-made dataset, demonstrating better detection performance compared to YOLOv5 and other models.
IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS
(2023)
Article
Environmental Sciences
Wenzheng Zhang, Changyue Wu, Weidong Man, Mingyue Liu, Riccardo Roncella
Summary: This study introduces a semi-supervised methodology for precise low-altitude UAV building segmentation in intricate scenarios. It employs adversarial networks, adaptive attention mechanism, and a composite loss function to achieve robustness in handling complex building segmentation challenges.
Article
Optics
Biswajit Medhi
Summary: A method for quantitative estimation of density in high-speed flow fields using structured illumination is proposed, which helps in phase estimation and quantitative determination of density distributions.
Article
Computer Science, Artificial Intelligence
Da-Ren Chen, Wei-Min Chiu
Summary: This paper proposes a new road crack/defect detection method, IlumiCrack, which integrates Gaussian mixture models (GMM) and object detection CNN models. The method is capable of detecting road cracks with high accuracy even under variable illumination conditions. Experimental evaluations and comparisons with other deep learning models demonstrate the effectiveness of IlumiCrack in improving classification accuracy.
Article
Environmental Sciences
Zhe Guo, Haojie Guo, Xuewen Liu, Weijie Zhou, Yi Wang, Yangyu Fan
Summary: The paper introduces the characteristics of optical images and SAR images, proposes the Sar2color model for SAR-to-optical transformation, and evaluates the model and conducts ablation experiments.
Article
Optics
Zewei Luo, Ge Wu, Mengting Kong, Zhi Chen, Zhengfei Zhuang, Junchao Fan, Tongsheng Chen
Summary: Forster resonance energy transfer (FRET) microscopy is a valuable tool for studying biological systems, but super-resolution FRET imaging in living cells is challenging. In this study, we propose a SR FRET method called SIM-FRET that combines SR structured illumination microscopy (SIM) imaging and acceptor sensitized emission FRET imaging to achieve live-cell quantitative SR FRET imaging. Our method provides enhanced spatial resolution and maintains the advantages of quantitative FRET analysis. We validate the effectiveness of SIM-FRET through simulated models and live-cell samples, and demonstrate its ability to reveal the intricate structure of FRET signals.
PHOTONICS RESEARCH
(2023)
Article
Construction & Building Technology
Junqing Zhu, Jingtao Zhong, Tao Ma, Xiaoming Huang, Weiguang Zhang, Yang Zhou
Summary: This study proposes using UAVs equipped with high-resolution cameras to collect pavement images for distress detection, trained three object-detection algorithms, and found that YOLOv3 performed the best. The findings of this research assist in inspecting non-destructive automatic pavement conditions.
AUTOMATION IN CONSTRUCTION
(2022)
Article
Optics
Changchun Lu, You Zhou, Yanxun Guo, Shaowei Jiang, Zibang Zhang, Guoan Zheng, Jingang Zhong
Summary: The study presents a mask-modulated lensless imaging platform based on translated structured illumination for high-resolution complex-valued object image recovery without involving mechanical scanning. By using an LED array to provide angle-varied illumination, regularized ptychographic iterative engine is employed in the reconstruction process, demonstrating higher resolution and better quality recovery compared to previous implementations.
Article
Optics
YoonSeok Baek, Herve Hugonnet, YongKeun Park
Summary: A method for calibrating pupil aberrations by imaging a sample of interest was proposed in this study, allowing for quantitative phase imaging of weakly scattering three-dimensional samples. Experimental results demonstrated aberration-free two- and three-dimensional QPI.
Article
Optics
Ling-Yu Dou, De-Zhong Cao, Lu Gao, Xin-Bing Song
Summary: We demonstrate sub-Rayleigh dark-field imaging using speckle illumination. Imaging is achieved with second-order auto-correlated measurement by illuminating objects with hollow conical pseudothermal light. Our scheme is effective for highly transparent amplitude objects, pure phase objects, and even more complex transparent objects. The auto-correlated dark-field images exhibit improved resolution compared to intensity-averaged images and the ability to filter out low-frequency noises.
Article
Optics
J. I. N. G. J. I. N. G. Zhang, Z. H. U. H. E. Jing, S. H. U. P. E. N. G. Zhao, X. I. A. O. Wang, G. U. A. N. G. D. O. N. G. Ma, Y. O. N. G. T. A. O. Zhao, R. U. I. F. E. N. G. Liu, F. U. L. I. LI
Summary: Imaging through scattering layers based on the optical memory effect (OME) has been extensively studied. Recovering hidden targets with proper spatial distribution in the presence of multiple targets beyond the OME range is crucial. In this letter, a method for multi-target object scattering imaging is proposed, utilizing the intensity correlation between structured illumination patterns and recorded speckle images. Experimental implementation with 16 targets and motion tracking demonstrates significant progress in large-field scattering imaging with multiple targets.
Article
Biochemical Research Methods
Paloma Casteleiro Costa, Bryan Wang, Caroline Filan, Annie Bowles-Welch, Carolyn Yeago, Krishnendu Roy, Francisco E. Robles
Summary: Dynamic qOBM is a novel functional imaging technique that provides unique information based on cellular and subcellular dynamics. It can help monitor adherent MSCs grown in bioreactors and contribute to quality-by-design of cell products.
JOURNAL OF BIOMEDICAL OPTICS
(2022)
Article
Chemistry, Analytical
Riaz Muhammad, Kay Thwe Htun, Ezekiel Edward Nettey-Oppong, Ahmed Ali, Dae Keun Jeon, Hyun-Woo Jeong, Kyung Min Byun, Seung Ho Choi
Summary: Pulse oximetry is a non-invasive method for measuring blood oxygen saturation, but single-point measurements can be influenced by various factors. To address this issue, we developed a novel illumination system for a pulse oximetry imaging system, which allows for consistent and spatially uniform measurements of oxygen saturation.
Article
Optics
Xingchen Zhao, Xiaoyu Nie, Zhenhuan Yi, Tao Peng, Marlan O. Scully
Summary: A non-invasive optical imaging technique using spatial-temporal encoded patterns (STEPs) is introduced, allowing for fast imaging and insensitivity to the motion of scattering media. The technique overcomes the limitations of traditional methods and offers efficient image reconstruction.
PHOTONICS RESEARCH
(2022)
Article
Biochemical Research Methods
Yongbing Zhang, Yangzhe Liu, Shaowei Jiang, Krishna Dixit, Pengming Song, Xinfeng Zhang, Xiangyang Ji, Xiu Li
Summary: A neural network model for Fourier ptyochography (FP) reconstruction is proposed to estimate optical aberrations accurately and achieve artifact-free high-resolution reconstruction. The method is validated through simulation and experiment, showing improved image quality by reducing artifacts.
JOURNAL OF BIOMEDICAL OPTICS
(2021)
Article
Optics
Chengfei Guo, Shaowei Jiang, Pengming Song, Zichao Bian, Tianbo Wang, Pouria Hoveida, Xiaopeng Shao
Summary: Diffractive zone plate optics use a micro-structure pattern to alter the propagation direction of incoming light waves, finding important applications in extreme-wavelength imaging. The resolution limit is determined by the smallest width of the outermost zone, and efforts have been made to fabricate very small zone widths for improved resolution. In an experiment, a diffractometer setup bypassed the resolution limit of zone plate optics, achieving 8-fold resolution improvement using in-plane and out-of-plane rotations as well as Fourier ptychographic image processing.
OPTICS COMMUNICATIONS
(2021)
Article
Biochemical Research Methods
Chengfei Guo, Zichao Bian, Soliman Alhudaithy, Shaowei Jiang, Yuji Tomizawa, Pengming Song, Tianbo Wang, Xiaopeng Shao
Summary: This study introduces a low-cost WSI system utilizing off-the-shelf components for real-time autofocusing, significantly improving focusing speed and accuracy, capable of handling various types of samples and multiple imaging modes, with the potential for broad applications at a lower cost.
BIOMEDICAL OPTICS EXPRESS
(2021)
Article
Biophysics
Shaowei Jiang, Chengfei Guo, Zichao Bian, Ruihai Wang, Jiakai Zhu, Pengming Song, Patrick Hu, Derek Hu, Zibang Zhang, Kazunori Hoshino, Bin Feng, Guoan Zheng
Summary: This study introduces an integrated ptychographic sensor for high-resolution lensless cytometric analysis of microbial cultures. The device can be placed within an incubator for long-term monitoring and offers a 7-fold increase in temporal resolution. It enables direct observation of bacterial growth at a 15-second interval and provides high phase sensitivity and large field of view for various applications such as drug screening and single-cell analysis.
BIOSENSORS & BIOELECTRONICS
(2022)
Article
Optics
Chengfei Guo, Shaowei Jiang, Liming Yang, Pengming Song, Tianbo Wang, Xiaopeng Shao, Zibang Zhang, Michael Murphy, Guoan Zheng
Summary: This paper presents a deep learning-enabled WSI platform called DeepWSI, which can significantly improve system performance and imaging throughput. With this platform, images captured with a regular dry objective lens can be transformed into images comparable to that of an oil immersion lens, and blurred images can be virtually refocused post measurement.
Article
Optics
Yue Huang, Shaowei Jiang, Ruihai Wang, Pengming Song, Jian Zhang, Guoan Zheng, Xiangyang Ji, Yongbing Zhang
Summary: This paper proposes the use of accelerated proximal gradient methods for blind ptychographic phase retrieval in lensless on-chip microscopy, dividing the phase retrieval problem into sub-problems involving the evaluation of proximal operator, stochastic gradient descent, and Wirtinger derivatives. The accelerated proximal gradient algorithm shows the best performance in terms of accuracy and convergence rate among the tested algorithms.
Article
Optics
Pengming Song, Shaowei Jiang, Tianbo Wang, Chengfei Guo, Ruihai Wang, Terrance Zhang, Guoan Zheng
Summary: Synthetic aperture ptychography (SAP) is an imaging technique that combines conventional ptychography and Fourier ptychography. By illuminating the object with an extended plane wave and synthesizing a complex-valued wavefront through sensor translation, SAP can widen the field of view in real space and expand the Fourier bandwidth in reciprocal space simultaneously. This method enables sub-diffraction imaging in the far field without the need for lenses.
PHOTONICS RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Shaowei Jiang, Chengfei Guo, Tianbo Wang, Jia Liu, Pengming Song, Terrance Zhang, Ruihai Wang, Bin Feng, Guoan Zheng
Summary: This article introduces the integration of a blood-coated image sensor with a modified Blu-ray drive for high-throughput cytometric analysis. Through the recording of coherent diffraction patterns from samples mounted on a rotating Blu-ray disc, the acquired data is used for image reconstruction using a lensless coherent diffraction imaging modality. The device exhibits high resolution and theoretically unlimited field of view.
Article
Optics
T. I. A. N. B. O. Wang, P. E. N. G. M. I. N. G. Song, S. H. A. O. W. E. Jiang, R. U. I. H. A. I. Wang, L. I. M. I. N. G. Yang, C. H. E. N. G. F. E. Guo, Z. I. B. A. N. G. Zhang, G. U. O. A. N. Zheng
Summary: The applications of conventional ptychography are limited by its low resolution and throughput in visible light. The development of coded ptychography (CP) addresses these issues and achieves high numerical aperture for large-area optical imaging without a lens. This article derives and analyzes the motion tracking model of CP, and presents a novel remote referencing scheme for blind image acquisition.
Article
Biophysics
Chengfei Guo, Shaowei Jiang, Liming Yang, Pengming Song, Azady Pirhanov, Ruihai Wang, Tianbo Wang, Xiaopeng Shao, Qian Wu, Yong Ku Cho, Guoan Zheng
Summary: This article introduces a new on-chip imaging strategy called Depth-Multiplexed Ptychographic Microscopy (DPM) for parallel high-speed imaging. DPM stacks multiple specimens in the axial direction and images the entire z-stack simultaneously, which is different from the traditional sequential imaging strategy. The author modifies a low-cost car mirror to control the incident angle of the laser beam and places a blood-coated image sensor underneath the stacked sample for diffraction pattern acquisition. The DPM approach enables parallel imaging of multiple specimens using a single detector and offers a solution for on-chip sensing and imaging with efficient sample handling.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Biochemical Research Methods
Shaowei Jiang, Chengfei Guo, Pengming Song, Tianbo Wang, Ruihai Wang, Terrance Zhang, Qian Wu, Rishikesh Pandey, Guoan Zheng
Summary: The recent advent of whole slide imaging systems has brought digital pathology closer to diagnostic applications and clinical practices. Integrating whole slide imaging with machine learning promises growth in this field. This study reports the design and implementation of a handheld, colour-multiplexed, and AI-powered ptychographic whole slide scanner for digital pathology applications.
Article
Biochemical Research Methods
Pengming Song, Chengfei Guo, Shaowei Jiang, Tianbo Wang, Patrick Hu, Derek Hu, Zibang Zhang, Bin Feng, Guoan Zheng
Summary: This study presents a fully on-chip, lensless microscopy technique called optofluidic ptychography, which allows high-resolution quantitative complex imaging in a lab-on-a-chip setup. By integrating ptychographic microscopy into microfluidic devices, the technology can achieve high-resolution ptychographic reconstruction at video framerate and address a wide range of biomedical needs.
Article
Engineering, Electrical & Electronic
Xu Chen, Bowen Li, Shaowei Jiang, Terrance Zhang, Xu Zhang, Peiwu Qin, Xi Yuan, Yongbing Zhang, Guoan Zheng, Xiangyang Ji
Summary: DNN-SIM is a structured illumination microscopy framework powered by deep neural networks, which learns the physical relationship between images with different lateral phase shifts, reducing acquisition time significantly while maintaining resolution, and capable of handling new samples.
IEEE TRANSACTIONS ON COMPUTATIONAL IMAGING
(2021)
Review
Physics, Applied
Guoan Zheng, Cheng Shen, Shaowei Jiang, Pengming Song, Changhuei Yang
Summary: Fourier ptychography is an imaging approach that addresses the intrinsic trade-off between resolution and field of view in optical systems and provides computational correction of optical aberrations. This Technical Review surveys its implementations and applications.
NATURE REVIEWS PHYSICS
(2021)
