Conferences related to Speckle

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2023 Annual International Conference of the IEEE Engineering in Medicine & Biology Conference (EMBC)

The conference program will consist of plenary lectures, symposia, workshops and invitedsessions of the latest significant findings and developments in all the major fields of biomedical engineering.Submitted full papers will be peer reviewed. Accepted high quality papers will be presented in oral and poster sessions,will appear in the Conference Proceedings and will be indexed in PubMed/MEDLINE.


2020 IEEE 70th Electronic Components and Technology Conference (ECTC)

ECTC is the premier international conference sponsored by the IEEE Components, Packaging and Manufacturing Society. ECTC paper comprise a wide spectrum of topics, including 3D packaging, electronic components, materials, assembly, interconnections, device and system packaging, optoelectronics, reliability, and simulation.


2020 IEEE International Conference on Image Processing (ICIP)

The International Conference on Image Processing (ICIP), sponsored by the IEEE SignalProcessing Society, is the premier forum for the presentation of technological advances andresearch results in the fields of theoretical, experimental, and applied image and videoprocessing. ICIP 2020, the 27th in the series that has been held annually since 1994, bringstogether leading engineers and scientists in image and video processing from around the world.


2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)

The Conference focuses on all aspects of instrumentation and measurement science andtechnology research development and applications. The list of program topics includes but isnot limited to: Measurement Science & Education, Measurement Systems, Measurement DataAcquisition, Measurements of Physical Quantities, and Measurement Applications.


2020 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)

All areas of ionizing radiation detection - detectors, signal processing, analysis of results, PET development, PET results, medical imaging using ionizing radiation


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Periodicals related to Speckle

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Antennas and Propagation, IEEE Transactions on

Experimental and theoretical advances in antennas including design and development, and in the propagation of electromagnetic waves including scattering, diffraction and interaction with continuous media; and applications pertinent to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques.


Applied Superconductivity, IEEE Transactions on

Contains articles on the applications and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Power applications include magnet design as well asmotors, generators, and power transmission


Biomedical Engineering, IEEE Transactions on

Broad coverage of concepts and methods of the physical and engineering sciences applied in biology and medicine, ranging from formalized mathematical theory through experimental science and technological development to practical clinical applications.


Dielectrics and Electrical Insulation, IEEE Transactions on

Electrical insulation common to the design and construction of components and equipment for use in electric and electronic circuits and distribution systems at all frequencies.


Display Technology, Journal of

This publication covers the theory, design, fabrication, manufacturing and application of information displays and aspects of display technology that emphasize the progress in device engineering, device design, materials, electronics, physics and reliabilityaspects of displays and the application of displays.


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Most published Xplore authors for Speckle

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Xplore Articles related to Speckle

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Robust speckle reducing anisotropic diffusion

EUSAR 2012; 9th European Conference on Synthetic Aperture Radar, 2012

Speckle Filter performance strongly depends on speckle model and heterogeneity measurement. Classical single-stage speckle filters fails to retain image structures on iteration, but iteration is necessary for effective smoothing of speckle. In this paper we propose a heterogeneity measuring technique that enables to apply traditional filters iteratively. We also propose a new robust anisotropic diffusion (AD) based speckle filter (ROSRAD), ...


A clustering approach for change detection in SAR images

EUSAR 2012; 9th European Conference on Synthetic Aperture Radar, 2012

This paper presents a new approach for change detection in SAR images based on clustering method. Classic change detection methods use a hard threshold to divide the difference map into two classes: change and unchanged, which has a disadvantage that some weak changed regions are often undetected. Unlike those methods, our proposed method use expectation maximization with graph cut optimization ...


An enhancing normalized radon transform method for ship wake detection in SAR imagery

EUSAR 2012; 9th European Conference on Synthetic Aperture Radar, 2012

Radon transform has been validated as an effective ship wake detection method. Considered on the impact of speckle noises, this paper proposes an enhancing normalized radon transform method to detect ship wakes in SAR imagery. The improved method enhances dark wakes firstly, and then radon transformed data is normalized by a normalization matrix. Preliminary results illustrates that the proposed algorithm ...


Visual Effect of Speckle Reduction on Interpretation of One-Look Sar Photo Images

12th Canadian Symposium on Remote Sensing Geoscience and Remote Sensing Symposium,, 1989

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Speckle interferometry for a partially-coherent source

1979 Antennas and Propagation Society International Symposium, 1979

None


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IEEE-USA E-Books

  • Robust speckle reducing anisotropic diffusion

    Speckle Filter performance strongly depends on speckle model and heterogeneity measurement. Classical single-stage speckle filters fails to retain image structures on iteration, but iteration is necessary for effective smoothing of speckle. In this paper we propose a heterogeneity measuring technique that enables to apply traditional filters iteratively. We also propose a new robust anisotropic diffusion (AD) based speckle filter (ROSRAD), that shown to perform better than the existing speckle reducing AD filters like SRAD and DPAD. Performance of ROSRAD is tested on simulated and real SAR images and compared with other AD filters.

  • A clustering approach for change detection in SAR images

    This paper presents a new approach for change detection in SAR images based on clustering method. Classic change detection methods use a hard threshold to divide the difference map into two classes: change and unchanged, which has a disadvantage that some weak changed regions are often undetected. Unlike those methods, our proposed method use expectation maximization with graph cut optimization to cluster the difference map into three classes: strong changed areas, weak changed areas and unchanged areas. The experimental results on real SAR images show that our approach obtains a higher detection rate than the previous ones.

  • An enhancing normalized radon transform method for ship wake detection in SAR imagery

    Radon transform has been validated as an effective ship wake detection method. Considered on the impact of speckle noises, this paper proposes an enhancing normalized radon transform method to detect ship wakes in SAR imagery. The improved method enhances dark wakes firstly, and then radon transformed data is normalized by a normalization matrix. Preliminary results illustrates that the proposed algorithm improves ship wake detection performance in SAR imagery, especially for dark wakes.

  • Visual Effect of Speckle Reduction on Interpretation of One-Look Sar Photo Images

    None

  • Speckle interferometry for a partially-coherent source

    None

  • Phase coherence factor with sub-aperture beamforming

    High-frame-rate echocardiography using unfocused transmit beams and parallel receive beamforming is a promising method for evaluation of cardiac function, such as imaging of rapid propagation of the heart wall vibration. In this technique, high temporal resolution is realized at the expense of spatial resolution and contrast. The phase coherence factor has been developed to improve spatial resolution and contrast in ultrasonography. It evaluates the variance in phases of echo signals received by individual transducer elements after delay compensation as in the conventional delay and sum beamforming process. However, the phase coherence factor suppresses speckle echoes because phases of speckle echoes fluctuate due to their mutual interference. In the present study, total receiving aperture was divided into several sub- apertures, and conventional delay and sum beamforming was performed with respect to each sub-aperture to suppress echoes from scatterers except for that from a focal point. After sub-aperture beamforming, the phase coherence factor was obtained from beamformed RF signals from respective sub-apertures. By means of this procedure, undesirable echoes, which can interfere with the echo from a focal point, can be suppressed by sub-aperture beamforming, and the degradation of the phase coherence factor due to phase fluctuation caused by such interference can be avoided. Effects of sub-aperture beamforming were evaluated using a phantom. By sub-aperture beamforming, the average intensity of speckle echoes from a diffuse scattering medium was significantly higher (-39.9 dB) than that obtained without sub-aperture beamforming (-48.7 dB). As for spatial resolution, the width at half maximum of the lateral echo amplitude profile obtained without the phase coherence factor was 1.06 mm. Using the phase coherence factor, spatial resolution was improved significantly, and sub-aperture beamforming achieved a better spatial resolution of 0.75 mm than that of 0.78 mm obtained without sub-aperture beamforming. Using sub-aperture beamforming in estimation of coherence factor, better visualization of speckle echoes and spatial resolution could be realized simultaneously by suppressing out-of-focus echoes.

  • A quarter-wave phase-stepping algorithm for fiber-optic electronic speckle pattern interferometry using zero-crossing triggers

    An efficient phase-stepping method for the use in fiber-optic electronic speckle pattern interferometry is proposed. A fiber-optic Michelson interferometer is phase-modulated, and the zero-crossing points of a back- reflected interference signal, that have consecutive pi phase difference, are used to trigger the charged-coupled device camera to capture specklegrams with pi/2 phase difference. A phase error of less than 3 mrad with 100-Hz image capture speed has been obtained in an open-loop configuration. Also, it has been experimentally shown that the phase-stepping accuracy of the proposing method does not depend on the nonlinear actions of the phase modulator

  • Fast least-squares phase estimation in speckle imaging

    This paper describes a fast direct algorithm for obtaining least-squares phase estimates from arrays of noisy phase differences. The algorithm uses the fast Fourier transform (FFT) to diagonalize and decouple the system of equations which results from the application of the least-squares criterion. It is accurate and stable, and is perhaps an order of magnitude faster than the best iterative method. The effectiveness of the algorithm has been demonstrated by using it in connection with the Knox-Thompson speckle-imaging procedure to restore an optical object perturbed by simulated atmospheric turbulence.

  • Parameter estimation of K distribution based on second-kind statistics

    The parameters of K distribution are estimated in this paper, and the log- cumulant estimator is proposed based on second-kind statistics. The performance of the log-cumulant estimator is tested on the Monte Carlo simulations. Parameter estimation results demonstrate that the log-cumulant estimator leads to high estimation accuracy for the small values of the shape parameter.

  • Speckle suppression by adaptive nonlinear filtering

    Using a good statistical model of speckle formation is important for designing an adaptive filter for speckle reduction in ultrasound B-scan images. Most clinical ultrasound imaging systems use nonlinear logarithmic functions to reduce the dynamic range of the input echo signal and emphasize objects with weak back scatter. The statistics of log-compressed images for the Nakagami distribution are used for designing an adaptive nonlinear filter for the purpose of speckle reduction. We processed two original ultrasound images of kidney and liver to demonstrate the efficiency of the designed filter.



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