Rank: 101 based on 687 downloads (last 30 days) and 15 files submitted
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Yue Wu

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Tufts University

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Files Posted by Yue Wu View all
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24 Jul 2014 Optimal Blockwise Shrinkage for Image Denoising Improving initially denoised using its corresponding noisy observation Author: Yue Wu image processing, image analysis, statistics 17 0
04 Mar 2014 Screenshot Document image deskew Deskew text directions of a document image to horizontal-like Author: Yue Wu image processing, image analysis 15 0
02 Dec 2013 Screenshot Mean shift pixel cluster This toy code implements the classic and basic pixel clustering using mean shifts Author: Yue Wu image processing, clustering, statistics 120 5
  • 2.66667
2.7 | 6 ratings
24 Sep 2013 Screenshot NPCR and UACI measurements with statistical tests Randomness measure of 'number of pixel changing rate' and 'unified average changed intensity' Author: Yue Wu image processing, statistics, measurement 20 0
19 Apr 2013 Screenshot Probabilistic Non-Local Means This code implements the probabilistic non-local means algorithm for image denoising. Author: Yue Wu kernel estimation, denoising, signal processing, statistics, image processing 27 0
Comments and Ratings by Yue Wu View all
Updated File Comments Rating
25 Mar 2012 Image Encryption This GUI does the Image Encryption of any RGB, Gray image of different formats. Author: busy

Is the implemented cipher has been published somewhere? I am interested in reading its full paper.

17 Nov 2011 Phase Locked Loop tutorial A tutorial showing how Phase-Locked Loops, both analog and digital can be efficiently modeling in Si Author: Giorgia Zucchelli

??? Error using ==> construct_error at 109
DOS commands may not be executed when the current
directory is a UNC pathname

Please change the current directory to a local directory
or use a network drive mapped to the current directory.

Warning: Unable to load block diagram 'powerlib'
> In plldemo at 181
??? Error using ==> plldemo at 181
Failed to load library 'powerlib' referenced by
'powerpll/Charge Pump Loop Filter/+10V'.

Caused by:
Error using ==> plldemo at 181
Unable to open file for reading: "powerlib.mdl".

07 May 2009 Chan Vese Active Contours without edges Mainly implement three Chan Vese active contour ideas. Author: Yue Wu

1. for question 1, I re-looked the code, you are right "im2double" that term should be omit.

2. the reason why I do normalization for both kappa term and image force term is I want to make sure that these two terms are always comparable, in other word, I do not want one of them dominate the minimization problem.

3. for me, this is OK. My understanding is: we distinguish background and foreground by their sign. I am pretty sure that even if you change my code for phi to the defnition you mentioned, you will still get the same answer.

02 Jan 2009 Adaptive median filter using Embedded MATLAB This demo shows how to implement an adapative median filter in hardware Author: Kiran Kintali

Could author provide a demo ? This will be very helpful.

Comments and Ratings on Yue Wu's Files View all
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22 Dec 2014 Fast Non-Local Mean Image Denoising Implementation This single m-file implemented a fast algorithm for non-local mean image denosing. Author: Yue Wu Geert

I could be wrong, but I believe your code only compares the lower right part of each patch, including the central pixel, whereas my correction compares the entire patch (squared difference norm)

22 Dec 2014 Fast Non-Local Mean Image Denoising Implementation This single m-file implemented a fast algorithm for non-local mean image denosing. Author: Yue Wu Geert

I think that fragment of code should be replaced by:

Sd = integralImgSqDiff(PaddedV,dx,dy);

% Obtaine the Square difference for every pair of pixels
SqDist = Sd(PatchSizeHalf+WindowSizeHalf+1:Height+WindowSizeHalf+PatchSizeHalf,PatchSizeHalf+WindowSizeHalf+1:Width+WindowSizeHalf+PatchSizeHalf)... % lower right corner
+ Sd(-PatchSizeHalf+WindowSizeHalf:Height+WindowSizeHalf-PatchSizeHalf-1,-PatchSizeHalf+WindowSizeHalf:Width+WindowSizeHalf-PatchSizeHalf-1)... % index below upper left corner
- Sd(-PatchSizeHalf+WindowSizeHalf:Height+WindowSizeHalf-PatchSizeHalf-1,PatchSizeHalf+WindowSizeHalf+1:Width+WindowSizeHalf+PatchSizeHalf)... % upper right corner
- Sd(PatchSizeHalf+WindowSizeHalf+1:Height+WindowSizeHalf+PatchSizeHalf,-PatchSizeHalf+WindowSizeHalf:Width+WindowSizeHalf-PatchSizeHalf-1);

22 Dec 2014 Fast Non-Local Mean Image Denoising Implementation This single m-file implemented a fast algorithm for non-local mean image denosing. Author: Yue Wu Geert

are you sure this method is correct?
I believe there is a structural bug in the part
% Obtaine the Square difference for every pair of pixels
SqDist = Sd(PatchSizeHalf+1:end-PatchSizeHalf,PatchSizeHalf+1:end-PatchSizeHalf)+Sd(1:end-2*PatchSizeHalf,1:end-2*PatchSizeHalf)-Sd(1:end-2*PatchSizeHalf,PatchSizeHalf+1:end-PatchSizeHalf)-Sd(PatchSizeHalf+1:end-PatchSizeHalf,1:end-2*PatchSizeHalf);

19 Dec 2014 Chan Vese Active Contours without edges Mainly implement three Chan Vese active contour ideas. Author: Yue Wu Sanya

Does this calculate contours with sub-pixel level accuracy? Also, how can I extract the co-ordinates of detected contours?

09 Dec 2014 Data Encryption Standard (DES) The last generation of encryption standard, good for cryptography study and cipher design. Author: Yue Wu ahsan elahi

@Anu Sharma..
did u corrected the code..?

i also have an error message while running the code on matlab 2011.
Error using ==> DES at 64
Not enough input arguments.

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