Speckle reduction
Noise and Speckle Reduction in Doppler Blood Flow Spectrograms Using an Adaptive Pulse-Coupled Neural Network
... Doppler speckle reduction in the ...Doppler speckle, which arises from the interference with each other of cells moving within the same velocity resolution cell, could be ...average speckle ...
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An Efficient Filtering Approach for Speckle Reduction in Ultrasound Images
... of speckle noise in US images limit the fine and edge details which affect the contrast ...for speckle reduction approach based on non-linear progression partial differential equation ...four ...
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A Level Set Filter for Speckle Reduction in SAR Images
... years, speckle removal for Synthetic Aperture Radar (SAR) image still is a challenging problem in image ...a speckle reduction method based on the theory of level set, one form of curvature flow ...
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Algorithm for Speckle Reduction and Image Enhancement in SAR Images Using Wavelet Transforms
... for speckle noise removal on a simulated image and on a single band image of 512 x 512 images of an urban area in ...significant speckle reduction in noise and edges can be identified in a better ...
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A Review on Analysis of Speckle reduction in Ultra Sound Images
... The speckle pattern depends on the structure of the image tissue and various imaging ...parameters. Speckle noise show in ultrasound picture influences edges and fine subtle elements which constrain the ...
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Speckle Reduction in SAR images using Wavelet Transform and Bivariate Shrinkage Function
... a speckle reduction algorithm based on separating the structure and texture components of SAR ...the speckle noise in SAR system is derived by Gabriele Moser, Josiane Zerubia, and Sebastiano ...
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Speckle Reduction of Synthetic Aperture Radar Images using Median Filter and Savitzky Golay Filter
... To protect the edges from blurring we apply enhanced directional smoothing to the processed despeckled image. Directional smoothing chooses neighbourhood with smallest variance and replace pixel value with the average of ...
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SPECKLE REDUCTION OF SAR IMAGES USING RATIONAL DILATION WAVELET TRANSFORMATION
... for speckle reduction of synthetic aperture radar images, which uses combination of rational-dilation wavelet transformation which is a more flexible family of wavelet transforms for which the frequency ...
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A Novel Approach for Speckle Reduction and Enhancement of Ultrasound Images
... reverberation, Speckle, noise, clutter which may be a source of confusion for the interpreting ...these Speckle noise is the major contributor to the low quality of the image which is visible in all ...
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Ultrasonic lateral modulation imaging, speckle reduction, and displacement vector measurements using simple single-beam scanning or plural crossed-beam scanning with new spectra frequency division processing methods
... of speckle reduction were ...of speckle reduction were the most pronounced for the simultaneous horizontal and vertical ...remaining speckle sizes and the boundary between the inclusion ...
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Speckle Reduction of SAR Images using Adaptive Sigmoid Thresholding and Analysis of various Filtering Techniques
... for speckle reduction through their sub band images, and the speckle reduction is obtained by thresholding the sub band image coefficients of the digitized SAR ...
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A New Contourlet based Compression and Speckle Reduction Method for Medical Ultrasound Images
... for speckle reduction and image compression of medical ultrasound images was ...the speckle noise, and in the case of preserving image details and edges which is very important for medical image ...
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Speckle Reduction and Structure Enhancement by Multichannel Median Boosted Anisotropic Diffusion
... down speckle noise to quasi-impulse-type noise, which is easily removed by the median ...in speckle reduction and image enhancement over previous ...
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EVALUATION OF SPECKLE REDUCTION FILTERING TECHNIQUES ON SAR IMAGES
... The speckle reduction methods fall into two categories: multi-look integration and post-image ...category, speckle reduction is carried out and i t is known as post ...
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Speckle Reduction in Imaging Projection Systems
... by comparing the results to experimental measured val- ues for two distinct diffusers. The diffusers modeled have been shown to have contrast values ranging from 65% - 77% and are accurate to within 10% of experiment ...
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Speckle Reduction in Carotid Artery Images using Dual Tree Complex Wavelet Transform
... Carotid artery disease is a condition in which the carotid arteries become narrowed or blocked. When the arteries become narrowed, the condition is called carotid stenosis. The carotid arteries provide the main blood ...
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Reduction of Speckle Noise in SDOCT Retinal Images by Fuzzification and Anisotropic Diffusion Filtering
... In order to quantify the results and obtain the quality of performance of the approach, the parameters such as mean square error (MSE), peak signal to noise ratio (PSNR), signal to noise ratio (SNR), contrast to noise ...
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A New Nonlinear Anisotropic – Wiener Method for Speckle Noise Reduction in Optical Coherence Tomography
... A wavelet based soft thresholding technique has been previously applied to OCT images corrupted by speckle noise [4]. It computes the undecimated wavelet transform and applies soft thresholding to the horizontal, ...
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An Approach to compare the performance of Different Transform Domain Filtering with Firefly Algorithm in Despeckling of SAR images
... the speckle reduction by the spatial filtering have been developed using Median, Lee, Frost and Kaun ...noise reduction and feature enhancement [4] – ...
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Enhancement of Bone Fracture Image Using Filtering Techniques
... Abstract — Ultrasound imaging has been introduced to provide a non-invasive and nondestructive technique either in industrial or medical field. In the medical field, ultrasound is broadly used for fetal and cancer ...
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