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Characterizing multiplexing and diversity in visual MIMO

Ashwin Ashok, Marco Gruteser, Narayan Mandayam, Kristin Dana
2011 2011 45th Annual Conference on Information Sciences and Systems  
Mobile optical wireless has so far been limited to very short ranges for high data rate systems.  ...  and blur in characterizing multiplexing and diversity in visual MIMO.  ...  codes for optical MIMO.  ... 
doi:10.1109/ciss.2011.5766257 dblp:conf/ciss/AshokGMD11 fatcat:soqfmiwyfnf3djpc23tttgztim

On Plenoptic Multiplexing and Reconstruction

Gordon Wetzstein, Ivo Ihrke, Wolfgang Heidrich
2012 International Journal of Computer Vision  
While this is a well-studied topic for imaging with color filter arrays, we develop a mathematical framework that generalizes multiplexed imaging to all dimensions of the plenoptic function.  ...  Photography has been striving to capture an ever increasing amount of visual information in a single image.  ...  Digital sensors have replaced light sensitive resins and on-board image processing using integrated computing hardware is now common practice, even for consumer-grade digital cameras.  ... 
doi:10.1007/s11263-012-0585-9 fatcat:vakgivuxlvghpahsippyezw4ye


Joseph Mait
2003 Optics Express  
The gap represents a desire, but few tools, for combining optics with electronics optimally in image and sensor processing.  ...  In multiplex imaging the optics is used to produce redundant information, which makes it easier for the electronics to extract or enhance.  ... 
doi:10.1364/oe.11.002091 pmid:19466095 fatcat:vj4tsbfajzbw5jtyxhm7ny3k2i

Recovering higher dimensional image data using multiplexed structured illumination

Siyuan Dong, Kaikai Guo, Shaowei Jiang, Guoan Zheng
2015 Optics Express  
Here, we propose a multiplexed SI technique for recovering images with higher lateral resolution and with higher dimensional information at the same time.  ...  The reported multiplexed-SI framework may find applications in general imaging settings where higher dimensional information is mixed in 2D image measurements.  ...  (b) The raw monochromatic acquisition of the color object (Visualization 1). (c) The images under uniform illumination. The multiplexed-SI recovered images (d) and speckle patterns (e).  ... 
doi:10.1364/oe.23.030393 pmid:26698518 fatcat:qc3ogskry5cg7ld7bbietmjmxa

Next-generation imaging: New insights from multicolor microscopy in liver biology and disease

Felix Heymann, Adrien Guillot, Moritz Peiseler, Frank Tacke
2021 Engineering  
The optical resolution limit is mainly based on the imaging system used for data acquisition.  ...  Need for specialized imaging equipment (light sheet/laser scanning microscope) • Balance between optimal clearing and stainingIntravital microscopy • Visualization of dynamic processes • Functional imaging  ... 
doi:10.1016/j.eng.2021.06.015 fatcat:c2y3zfh46vd23jpzl4s276xugy

Multi-functional angiographic OFDI using frequency-multiplexed dual-beam illumination

SunHee Kim, Taejin Park, Sun-Joo Jang, Ahhyun S. Nam, Benjamin J. Vakoc, Wang-Yuhl Oh
2015 Optics Express  
In this paper, we present multi-functional angiographic optical frequency domain imaging (OFDI) using frequency-multiplexed dual-beam illumination.  ...  domain processing.  ...  For visualization of small vessels and capillaries, long time interval of typically several milliseconds, which is at least several times longer than the interval that the current frequency-multiplexed  ... 
doi:10.1364/oe.23.008939 pmid:25968731 pmcid:PMC4523372 fatcat:beh4yzokujg6dlxctaxfjurtvm

Optical Imaging for Stem Cell Differentiation to Neuronal Lineage

Do Won Hwang, Dong Soo Lee
2012 Nuclear medicine and molecular imaging  
Furthermore, we propose an advanced imaging system to monitor neuronal differentiation during neurogenesis that uses in vivo multiplexed imaging techniques capable of detecting several targets simultaneously  ...  Both systems revealed dramatic changes in optical reporter imaging signals in cells differentiating into a neuronal lineage.  ...  A variety of imaging modalities, such as nuclear, optical, and magnetic resonance (MR) imaging, can be easily applied to visualize the process of cellular differentiation in vivo.  ... 
doi:10.1007/s13139-011-0122-8 pmid:24900026 pmcid:PMC4042974 fatcat:ij5pz46ounfwbgvwqv6zpdj5ue

Real-time quantitative phase reconstruction in off-axis digital holography using multiplexing

Pinhas Girshovitz, Natan T. Shaked
2014 Optics Letters  
This new technique is important for real-time quantitative visualization and measurements of highly dynamic samples and is applicable for a wide range of applications, including rapid biological cell imaging  ...  We present a new approach for obtaining significant speedup in the digital processing of extracting unwrapped phase profiles from off-axis digital holograms.  ...  Simultaneous processing of the phase profiles during the acquisition of the holograms is highly advantageous for real-time visualization, such as for controlling a dynamic process during its holographic  ... 
doi:10.1364/ol.39.002262 pmid:24978968 fatcat:5pmigpgfynf4lgtfihcj75m4am

Resolution of Temporal-Multiplexing and Spatial-Multiplexing Stereoscopic Televisions

Joohwan Kim, Martin S. Banks
2017 Current Optics and Photonics  
Stereoscopic (S3D) displays present different images to the two eyes. Temporal multiplexing and spatial multiplexing are two common techniques for accomplishing this.  ...  Importantly, we observed a significant difference in resolution at the viewing distance that is generally recommended for high-definition television.  ...  Then the images undergo optical and neural filtering, which we represent by multiplication with the CSF (third plots from left), yielding the amplitude spectra of the image after early visual processing  ... 
doi:10.3807/copp.2017.1.1.034 fatcat:hbi33ab22nfcnmsbnwohekpa6e

Optimal spatial bandwidth capacity in multiplexed off-axis holography for rapid quantitative phase reconstruction and visualization: erratum

Gili Dardikman, Nir A. Turko, Noa Nativ, Simcha K. Mirsky, Natan T. Shaked
2018 Optics Express  
Both multiplexing architectures are then demonstrated for experimentally-acquired off-axis holograms for quantitative phase imaging of biological cells.  ...  Since the output multiplexed hologram contains only real values, it can be used for rapid display of eight wave front reconstructions at once, which is useful for real-time visualization, when the hologram  ...  optically transparent biological cells when imaged in vitro.  ... 
doi:10.1364/oe.26.020848 pmid:30119388 fatcat:naisxo3ui5bt3myra4kq3mv354

Realtime photoacoustic microscopy of murine cardiovascular and respiratory dynamics in vivo

Roger J. Zemp, Liang Song, Rachel Bitton, K. Kirk Shung, Lihong V. Wang, Alexander A. Oraevsky, Lihong V. Wang
2008 Photons Plus Ultrasound: Imaging and Sensing 2008: The Ninth Conference on Biomedical Thermoacoustics, Optoacoustics, and Acousto-optics  
Also of interest was the ability to visualize microvascular changes during respiration.  ...  Realtime display is very helpful and provides the system operator the ability to better navigate and position the probe for selecting a desired anatomical field of view.  ...  Ed Richter for allowing us to test the feasibility of our realtime beamforming algorithm on their dual-socket quad core workstations. We thank Dr. George Stoica for assistance with animal protocols.  ... 
doi:10.1117/12.763127 fatcat:xsjoci3isva53j6jz3eiv4km5a


Ashwin Ashok, Marco Gruteser, Narayan Mandayam, Jayant Silva, Michael Varga, Kristin Dana
2010 Proceedings of the sixteenth annual international conference on Mobile computing and networking - MobiCom '10  
we call as visual-MIMO (multiple-input multipleoutput) where optical transmissions by multiple transmitter elements are received by an array of photodiode elements (e.g. pixels in a camera).  ...  These characteristics lead to significant challenges and opportunities for mobile networking research.  ...  At the PHY layer, visual MIMO can also benefit from exploiting the multiplexing/diversity tradeo↵ as a function of the resolvability of multiple images on the image plane at various distances between the  ... 
doi:10.1145/1859995.1860008 dblp:conf/mobicom/AshokGMSVD10 fatcat:qm7ndpmm4jhpdhk2rg6wslqoiy

Extraction of Zernike Coefficients Modes using Holographic Wavefront Sensing: Modeling and Simulation

S. Kara Mohammed, D. Bahloul, S. Cherif, M. Rahmani
2015 International Journal of Information and Electronics Engineering  
This multiplexed hologram is used to produce a spots (white pixel on the detector) according to the presence of particular aberration.  ...  This CGH is coded with a single particular Zernike aberration mode with different coeffecients and then all the holograms are multiplexed and binarized to get the final hologram.  ...  However, optical recording of multiplexed hologram is tedious process. The computer-generated hologram is the better option to implement this type of sensor [7] , [8] .  ... 
doi:10.18178/ijiee.2016.6.1.592 fatcat:xtp7iwfl4fcc7e2dus3nnlsjzy

Multiple-wavelength double random phase encoding with CCD-plane sparse-phase multiplexing for optical information verification

Wen Chen
2015 Applied Optics  
Two different strategies are applied to conduct sparse-phase multiplexing in the CCD plane. The results demonstrate that large capacity can be achieved for optical multiple-image verification.  ...  The proposed method provides a novel alternative for DRPE-based optical information verification. © 2015 Optical Society of America OCIS codes : (200.4560) Optical data processing; (100.4998) Pattern recognition  ...  The proposed method provides a novel alternative for DRPE-based optical image processing.  ... 
doi:10.1364/ao.54.010711 pmid:26837040 fatcat:6l4emjwz3vc2vlv7pisb5ziadq

High-Definition 3D Stereoscopic Microscope Display System for Biomedical Applications

Ki-Chul Kwon, Young-Tae Lim, Nam Kim, Kwan-Hee Yoo, Jong-Myeon Hong, Gi-Chang Park
2010 EURASIP Journal on Image and Video Processing  
The system consists of a stereoscopic camera part, image processing device for stereoscopic video recording, and stereoscopic display.  ...  To visualize the stereo images, many related devices have been developed. However, the devices are difficult to learn for junior doctors and demanding to supervise for experienced surgeons.  ...  The function of Multiplexing/De Multiplexing is realized by the process of the writing and reading in the frame buffer about the input image.  ... 
doi:10.1155/2010/724309 fatcat:zqehe7xl5bernnj2trw3wxzkhm
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