Results 41 to 50 of about 3,337,138 (296)
Speckle spot detection in ultrasound images: Application to speckle reduction and speckle tracking [PDF]
2014 IEEE International Ultrasonics Symposium, 2014 This paper investigates the speckle spot detection task in ultrasound images. Speckle spots are described by structural criteria: dimensions, shape, and topology. We propose to represent the image using a morphological inclusion tree, from which speckle spots are detected using their structural appearance. This makes the method independent of contrast,
Nicolas Widynski +2 more
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A Level Set Filter for Speckle Reduction in SAR Images
EURASIP Journal on Advances in Signal Processing, 2010 Despite much effort and significant progress in recent years, speckle removal for Synthetic Aperture Radar (SAR) image still is a challenging problem in image processing.
Xiaoxia Huang, Bo Huang, Hongga Li
doaj +2 more sources
Mid-infrared speckle reduction technique for hyperspectral imaging
, 2022 International audienceRecently, we proposed an active mid-infrared (MIR) hyperspectral imaging system for early detection of plant water stress. A quantum cascade tunable laser powered this stand-off detection system, in which "speckle" in ...
Besnard, Pascal +11 more
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Speckle Reduction with Trained Nonlinear Diffusion Filtering [PDF]
Journal of Mathematical Imaging and Vision, 2016 to appear in Journal of Mathematical Imaging and Vision.
WenSen Feng, Yunjin Chen
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Dynamic Speckle Illumination Digital Holographic Microscopy by Doubly Scattered System
Photonics, 2021 The coherent noise always exists in digital holographic microscopy due to the laser source, degrading the image quality. A method of speckle suppression using the dynamic speckle illumination, produced by double-moving diffusers, is presented in digital ...
Yun Liu +7 more
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Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system
FEBS Letters, EarlyView.Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley +1 more source
Wishart-Based Adaptive Temporal Filtering of Polarimetric SAR Imagery
Remote Sensing, 2020 Temporal filtering for speckle reduction of polarimetric SARimages is described. The method is based on a sequential complex Wishart-based change detection algorithm which is applied to polarized SAR imagery, including the dual-polarization intensity ...
Morton J. Canty +3 more
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Grinding surface roughness measurement based on the co-occurrence matrix of speckle pattern texture [PDF]
, 2006 Surface speckle pattern intensity distribution resulting from laser light scattering from a rough surface contains various information about the surface geometrical and physical properties.A surface roughness measurement technique based on the texture ...
Gledhill, Duke +5 more
core +1 more source
A Study of Speckle Noise Reduction Filters
Signal & Image Processing : An International Journal, 2015 Ultrasound images and SAR i.e. synthetic aperture radar images are usually corrupted because of speckle noise also called as granular noise. It is quite a tedious task to remove such noise and analyze those corrupted images. Till now many researchers worked to remove speckle noise using frequency domain methods, temporal methods, and adaptive methods ...
Jyoti Jaybhay, Rajveer Shastri
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Spatio-temporal Speckle Reduction in Ultrasound Sequences [PDF]
Inverse Problems and Imaging, 2008 In this paper we will be concerned with speckle removal in ultrasound images. To this end, we introduce a new spatio-temporal de-noising method based on a variational formulation. The regularization relies on a non parametric image model that describes the observed image structure and express inter-dependencies between pixels in space and time ...
Azzabou, Noura, Paragios, Nikos
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