mlsanityData to 7 Oct 2026

Recent Advances on Non-Line-of-Sight Imaging: Conventional Physical Models, Deep Learning, and New Scenes

arXiv 2104.13807 ↗First posted 28 Apr 2021eess.IV cs.CVcited by 10

Not on the map. Why?

Abstract (arXiv)

As an emerging technology that has attracted huge attention, non-line-of-sight (NLOS) imaging can reconstruct hidden objects by analyzing the diffuse reflection on a relay surface, with broad application prospects in the fields of autonomous driving, medical imaging, and defense. Despite the challenges of low signal-to-noise ratio (SNR) and high ill-posedness, NLOS imaging has been developed rapidly in recent years. Most current NLOS imaging technologies use conventional physical models, constructing imaging models through active or passive illumination and using reconstruction algorithms to restore hidden scenes. Moreover, deep learning algorithms for NLOS imaging have also received much attention recently. This paper presents a comprehensive overview of both conventional and deep learning-based NLOS imaging techniques. Besides, we also survey new proposed NLOS scenes, and discuss the challenges and prospects of existing technologies. Such a survey can help readers have an overview of different types of NLOS imaging, thus expediting the development of seeing around corners.

Key facts. Cited by 10 papers in the map (data through 7 Oct 2026). Builds on 33 of its 121 references that are in the map. First posted on arXiv 28 Apr 2021.

Builds on

33 of 121 references.

References · 33

  1. 2015Deep Residual Learning for Image Recognitioncited by 51,809
  2. 2015U-Net: Convolutional Networks for Biomedical Image Segmentationcited by 19,604
  3. 2014Depth Map Prediction from a Single Image using a Multi-Scale Deep Networkcited by 1,264
  4. 2017DeblurGAN: Blind Motion Deblurring Using Conditional Adversarial Networkscited by 366
  5. 2013Phase Retrieval using Alternating Minimizationcited by 58
  6. 2018Virtual Wave Optics for Non-Line-of-Sight Imagingcited by 54
  7. 2020Non-line-of-sight Imagingcited by 41
  8. 2021Non-line-of-Sight Imaging via Neural Transient Fieldscited by 41
  9. 2020Optical Non-Line-of-Sight Physics-based 3D Human Pose Estimationcited by 34
  10. 2017Fast Back-Projection for Non-Line of Sight Reconstructioncited by 24
  11. 2020Deep Non-Line-of-Sight Reconstructioncited by 21
  12. 2018Non-Line-of-Sight Reconstruction using Efficient Transient Renderingcited by 17
21 more
  1. 2019Recent Advances in Imaging Around Cornerscited by 17
  2. 2018Steady-state Non-Line-of-Sight Imagingcited by 16
  3. 2020DeFMO: Deblurring and Shape Recovery of Fast Moving Objectscited by 16
  4. 2017A Computational Model of a Single-Photon Avalanche Diode Sensor for Transient Imagingcited by 13
  5. 2019Computational Mirrors: Blind Inverse Light Transport by Deep Matrix Factorizationcited by 12
  6. 2019Keyhole Imaging: Non-Line-of-Sight Imaging and Tracking of Moving Objects Along a Single Optical Pathcited by 12
  7. 2020Two-Dimensional Non-Line-of-Sight Scene Estimation from a Single Edge Occludercited by 12
  8. 2020Efficient Non-Line-of-Sight Imaging from Transient Sinogramscited by 12
  9. 2017Non-line-of-sight tracking of people at long rangecited by 10
  10. 2021Single-photon imaging over 200 kmcited by 10
  11. 2016Optically lightweight tracking of objects around a cornercited by 9
  12. 2017Neural network identification of people hidden from view with a single-pixel, single-photon detectorcited by 9
  13. 2018Flash Photography for Data-Driven Hidden Scene Recoverycited by 7
  14. 2019Direct Object Recognition Without Line-of-Sight Using Optical Coherencecited by 6
  15. 2017Exploiting Occlusion in Non-Line-of-Sight Active Imagingcited by 5
  16. 2019Adaptive Lighting for Data-Driven Non-Line-of-Sight 3D Localization and Object Identificationcited by 5
  17. 2020Non-line-of-sight imaging off a Phong surface through deep learningcited by 3
  18. 2017Single-shot multispectral imaging with a monochromatic cameracited by 2
  19. 2018Multi-modal Non-line-of-sight Passive Imagingcited by 2
  20. 2018Reconstruction of multiple non-line-of-sight objects using back projection based on ellipsoid mode decompositioncited by 1
  21. 2020Scannerless non-line-of-sight three dimensional imaging with a 32x32 SPAD arraycited by 1

Built on by

Cited by year

Citing papers per year: 2021: 2; 2022: 0; 2023: 3; 2024: 3; 2025: 2.

10 papers.

  1. 2024Imaging Interiors: An Implicit Solution to Electromagnetic Inverse Scattering Problemscited by 8
  2. 2021Computational Imaging and Artificial Intelligence: The Next Revolution of Mobile Visioncited by 7
  3. 2023Curvature regularization for Non-line-of-sight Imaging from Under-sampled Datacited by 2
  4. 2023Propagate And Calibrate: Real-time Passive Non-line-of-sight Trackingcited by 2
  5. 2021Onsite Non-Line-of-Sight Imaging via Online Calibrationscited by 0
  6. 2023Passive Non-Line-of-Sight Imaging with Light Transport Modulationcited by 0
  7. 2024PathFinder: Attention-Driven Dynamic Non-Line-of-Sight Tracking with a Mobile Robotcited by 0
  8. 2024Iterating the Transient Light Transport Matrix for Non-Line-of-Sight Imagingcited by 0
  9. 2025TransiT: Transient Transformer for Non-line-of-sight Videographycited by 0
  10. 2025Electromagnetic Inverse Scattering from a Single Transmittercited by 0