Results 11 to 20 of about 431,772 (260)

Image Transmission Based on Spiking Dynamics of Electrically Controlled VCSEL-SA Neuron

open access: yesPhotonics, 2021
Based on the spiking dynamics of the electrically controlled vertical-cavity surface-emitting laser with an embedded saturable absorber (VCSEL-SA), we propose an image transmission system using two unidirectionally coupled VCSEL-SAs and numerically ...
Min Ni   +8 more
doaj   +1 more source

Epipolar Consistency in Transmission Imaging [PDF]

open access: yesIEEE Transactions on Medical Imaging, 2015
This paper presents the derivation of the Epipolar Consistency Conditions (ECC) between two X-ray images from the Beer-Lambert law of X-ray attenuation and the Epipolar Geometry of two pinhole cameras, using Grangeat's theorem. We motivate the use of Oriented Projective Geometry to express redundant line integrals in projection images and define a ...
André Aichert   +6 more
openaire   +2 more sources

Improving the Calibration of Image Sensors Based on IOFBs, Using Differential Gray-Code Space Encoding

open access: yesSensors, 2012
This paper presents a fast calibration method to determine the transfer function for spatial correspondences in image transmission devices with <em>Incoherent</em><em> </em><em>Optical Fiber</em><em> </em> ...
Carlos Luna Vázquez   +5 more
doaj   +1 more source

Adaptive Rate Polar Code for DCT-Based Digital Image Transmission

open access: yesIEEE Access, 2023
Polar code is a recent forward error correction technique that is characterized by its low encoding/decoding complexity and good error performance. In this paper, a complete image transmission system (transmitter and receiver) is proposed to improve the ...
Mai Adel   +2 more
doaj   +1 more source

The Continuity of Images by Transmission Imaging Revisited

open access: yesCoRR, 2014
Transmission imaging, as an important imaging technique widely used in astronomy, medical diagnosis, and biology science, has been shown in [49] quite different from reflection imaging used in our everyday life. Understanding the structures of images (the prior information) is important for designing, testing, and choosing image processing methods, and
Zhitao Fan   +3 more
openaire   +2 more sources

Differential Binary Encoding Method for Calibrating Image Sensors Based on IOFBs

open access: yesSensors, 2012
Image transmission using incoherent optical fiber bundles (IOFBs) requires prior calibration to obtain the spatial in-out fiber correspondence necessary to reconstruct the image captured by the pseudo-sensor.
Ángel Cano   +5 more
doaj   +1 more source

Maximum likelihood transmission image reconstruction for overlapping transmission beams [PDF]

open access: yes1999 IEEE Nuclear Science Symposium. Conference Record. 1999 Nuclear Science Symposium and Medical Imaging Conference (Cat. No.99CH37019), 2000
In many transmission imaging geometries, the transmitted "beams" of photons overlap on the detector, such that a detector element may record photons that originated in different sources or source locations and thus traversed different paths through the object.
Yu, Daniel F.   +2 more
openaire   +5 more sources

On the continuity of images by transmission imaging [PDF]

open access: yesCommunications in Mathematical Sciences, 2013
Communications in Mathematical Sciences ; 11 ; 2 ; 573 ...
openaire   +1 more source

Image transmission through an opaque material [PDF]

open access: yesNature Communications, 2010
Optical imaging relies on the ability to illuminate an object, collect and analyze the light it scatters or transmits. Propagation through complex media such as biological tissues was so far believed to degrade the attainable depth as well as the resolution for imaging because of multiple scattering. This is why such media are usually considered opaque.
Popoff, S. M.   +4 more
openaire   +3 more sources

Joint Early Stopping Criterions for Protograph LDPC Codes-Based JSCC System in Images Transmission

open access: yesEntropy, 2021
In this paper, a joint early stopping criterion based on cross entropy (CE), named joint CE criterion, is presented for double-protograph low-density parity-check (DP-LDPC) codes-based joint source-channel coding (JSCC) systems in images transmission to ...
Zhiping Xu, Lin Wang, Shaohua Hong
doaj   +1 more source

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