Rank: 291 based on 337 downloads (last 30 days) and 8 files submitted
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SANTIAGO AJA-FERNANDEZ

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Universidad de Valladolid

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18 Feb 2014 Screenshot Soft thresholding for image segmentation Image segmentation based on histogram soft thresholding Author: SANTIAGO AJA-FERNANDEZ fuzzy, thresholding, image processing, segmentation 78 13
  • 4.8
4.8 | 5 ratings
12 Jun 2012 Screenshot LMMSE filter for Rician MRI data A filtering scheme for denoising MR data assuming an underlying Rician model. Author: SANTIAGO AJA-FERNANDEZ mri, noise, denoising, image filtering, image processing 38 3
  • 4.0
4.0 | 1 rating
31 May 2012 Screenshot Quality Index based on Local Variance (QILV) Method to assess image quality based on local variance comparison with Golden Standard Author: SANTIAGO AJA-FERNANDEZ image processing, quality, quality assessment, local variance, image quality 30 1
  • 5.0
5.0 | 2 ratings
29 May 2012 Screenshot Parallel MRI noisy phantom simulator Simulator of noisy parallel acquisition MR data (GRAPPA and SENSE included) Author: SANTIAGO AJA-FERNANDEZ magnetic resonance, noise, parallel imaging, phantom, noise simulator, image processing 52 1
  • 5.0
5.0 | 2 ratings
29 May 2012 Screenshot Detail Preserving Anosotropic Diffusion for Speckle Filtering (DPAD) DPAD applies an anisotropic diffusion scheme to an image with multiplicative speckle Author: SANTIAGO AJA-FERNANDEZ speckle, noise filtering, noise estimation, anisotropic diffusion, ultrasound, image processing 64 4
  • 5.0
5.0 | 2 ratings
Comments and Ratings by SANTIAGO View all
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27 Jan 2014 Soft thresholding for image segmentation Image segmentation based on histogram soft thresholding Author: SANTIAGO AJA-FERNANDEZ

Answer to Arnold: Your output will strongly depend on the input image. COntact me by mail and I can check where it is failing.

29 Nov 2012 Detail Preserving Anosotropic Diffusion for Speckle Filtering (DPAD) DPAD applies an anisotropic diffusion scheme to an image with multiplicative speckle Author: SANTIAGO AJA-FERNANDEZ

What you have called I0 must be the input image. Note that you cannot name a variable with a number in matlab. Try Io instead. In addition, it is not an example, but an example of use. You must have some image Io and use it as your input.

25 Jun 2012 Soft thresholding for image segmentation Image segmentation based on histogram soft thresholding Author: SANTIAGO AJA-FERNANDEZ

Modify anything you want, of course. It should be easy. I cannot say when next version will be ready, sorry. I'll try to do it along these months.

18 Jun 2012 Soft thresholding for image segmentation Image segmentation based on histogram soft thresholding Author: SANTIAGO AJA-FERNANDEZ

The function is a basic implementation thought for 2D, but with very small changes it could work for 3D. The square neighborhoods used for smoothing and aggregation must be replaced by 3D neighborhoods. (I'll do it for the next version...)

12 Jun 2012 LMMSE filter for Rician MRI data A filtering scheme for denoising MR data assuming an underlying Rician model. Author: SANTIAGO AJA-FERNANDEZ

The method now requires to choose one of the existing noise estimation methods as an input: (See help)

I_est=MRI_lmmse(I,[7,7],'mode2N');

However, I have just realized that the function moda.m is not in the toolbox. I upload now a new version with this fixed, and a default option

Comments and Ratings on SANTIAGO's Files View all
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01 Jul 2014 LMMSE filter for Rician MRI data A filtering scheme for denoising MR data assuming an underlying Rician model. Author: SANTIAGO AJA-FERNANDEZ Christian

very useful! thank you!

18 May 2014 Detail Preserving Anosotropic Diffusion for Speckle Filtering (DPAD) DPAD applies an anisotropic diffusion scheme to an image with multiplicative speckle Author: SANTIAGO AJA-FERNANDEZ Avital, Royi

What do you think about this method:
https://github.com/JarnoRalli/PDE-based-image-processing/issues/1

13 Apr 2014 Soft thresholding for image segmentation Image segmentation based on histogram soft thresholding Author: SANTIAGO AJA-FERNANDEZ DaDu

04 Apr 2014 Soft thresholding for image segmentation Image segmentation based on histogram soft thresholding Author: SANTIAGO AJA-FERNANDEZ Martin

05 Mar 2014 Quality Index based on Local Variance (QILV) Method to assess image quality based on local variance comparison with Golden Standard Author: SANTIAGO AJA-FERNANDEZ Talari, Tirupal

good work. thanks sir.

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