Looking through a diffuser and around an opaque surface: A holographic approach

Singh, Alok Kumar; Naik, Dinesh N.; Pedrini, Giancarlo; Takeda, Mitsuo; Osten, Wolfgang

doi:10.1364/oe.22.007694

Cited by 92 publications

(44 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In 2014, Singh et al proposed a holographic approach for visualizing objects without line-of-sight, based on the numerical reconstruction of 3D objects by digital holography in which a hologram is formed on a reflectively scattering surface [34]. A coherent light source is divided into two parts: One beam illuminates the object, while the other is set as the reference beam.…”

Section: Imaging Based On Holographic Approachmentioning

confidence: 99%

Direct Object Recognition Without Line-Of-Sight Using Optical Coherence

Lei

Tan

et al. 2019

2019 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)

View full text Add to dashboard Cite

Visual object recognition under situations in which the direct line-of-sight is blocked, such as when it is occluded around the corner, is of practical importance in a wide range of applications. With coherent illumination, the light scattered from diffusive walls forms speckle patterns that contain information of the hidden object. It is possible to realize non-line-of-sight (NLOS) recognition with these speckle patterns. We introduce a novel approach based on speckle pattern recognition with deep neural network, which is simpler and more robust than other NLOS recognition methods. Simulations and experiments are performed to verify the feasibility and performance of this approach.

show abstract

Section: Imaging Based On Holographic Approachmentioning

confidence: 99%

Direct Object Recognition Without Line-Of-Sight Using Optical Coherence

Lei

Tan

et al. 2019

2019 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)

View full text Add to dashboard Cite

show abstract

“…[31][32][33][34] However, these holographic imaging methods require an interferometric system 35,36 and work only for a thin diffusive layer, which is difficult to be applied to thick biological tissues. Recently, an approach called the scattering correlation matrix was developed, which retrieves TM information from the measurement of speckle intensity patterns.…”

Section: Imaging Through Biological Tissuesmentioning

confidence: 99%

Perspective: Wavefront shaping techniques for controlling multiple light scattering in biological tissues: Toward in vivo applications

Park

Lee

et al. 2018

APL Photonics

View full text Add to dashboard Cite

Multiple light scattering has been regarded as a barrier in imaging through complex media such as biological tissues. Owing to recent advances in wavefront shaping techniques, optical imaging through intact biological tissues without invasive procedures can now be used for direct experimental studies, presenting promising application opportunities in in vivo imaging and diagnosis. Although most of the recent proof of principle breakthroughs have been achieved in the laboratory setting with specialties in physics and engineering, we anticipate that these technologies can be translated to biological laboratories and clinical settings, which will revolutionize how we diagnose and treat a disease. To provide insight into the physical principle that enables the control of multiple light scattering in biological tissues and how recently developed techniques can improve bioimaging through thick tissues, we summarize recent progress on wavefront shaping techniques for controlling multiple light scattering in biological tissues.

show abstract

“…The correlation-based approach exploits the shift invariance of speckles, which is called the memory effect [31][32][33][34][35][36][37][38][39]. In the correlation-based methods, an autocorrelation process is used for removing speckles and exposing object signals in captured images.…”

Section: Introductionmentioning

confidence: 99%

Single-shot noninvasive three-dimensional imaging through scattering media

2019

View full text Add to dashboard Cite

We present a method for single-shot three-dimensional imaging through scattering media with a threedimensional memory effect. In the proposed computational process, a captured speckle image is twodimensionally correlated with different scales, and the object is three-dimensionally recovered with threedimensional phase retrieval. Our method was experimentally demonstrated with a lensless setup and was compared with a multi-shot approach used in our previous work [Y. Okamoto, et al., Opt. Lett. 44, 2526-2529 (2019)].

show abstract

Looking through a diffuser and around an opaque surface: A holographic approach

Cited by 92 publications

References 7 publications

Direct Object Recognition Without Line-Of-Sight Using Optical Coherence

Direct Object Recognition Without Line-Of-Sight Using Optical Coherence

Perspective: Wavefront shaping techniques for controlling multiple light scattering in biological tissues: Toward in vivo applications

Single-shot noninvasive three-dimensional imaging through scattering media

Contact Info

Product

Resources

About