Rank: 359 based on 330 downloads (last 30 days) and 2 files submitted
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Yue Wu

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Company/University
Tufts Univ

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Professional Interests:
Image Encryption, Image Segmentation and Recognition

 

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Files Posted by Yue View all
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09 Nov 2009 Screenshot Fast Sudoku Solver An algorithm to mimic human solving procedure for Sudoku puzzles Author: Yue Wu fun, solver, algorithms, sudoku, puzzle, games 179 0
26 Mar 2009 Screenshot Chan Vese Active Contours without edges Mainly implement three Chan Vese active contour ideas. Author: Yue Wu image force, mumford and shah, demo, vector image, active contour, chan vese 151 3
  • 5.0
5.0 | 1 rating
Comments and Ratings by Yue View all
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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.

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06 Nov 2009 Chan Vese Active Contours without edges Mainly implement three Chan Vese active contour ideas. Author: Yue Wu zoghbi, JIhan

Thanks for this implementation, it helps me a lot understanding the chan-vez method. I don't understand some parts of the code:
1- In the file check-stop I don't undestand this condition "if Q<=dt*.18^2", why you choose "dt*.18^2". What is the condition to stop the iterations?
Thsnks a lot

01 Nov 2009 Chan Vese Active Contours without edges Mainly implement three Chan Vese active contour ideas. Author: Yue Wu zoghbi, JIhan

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

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.
01 May 2009 Chan Vese Active Contours without edges Mainly implement three Chan Vese active contour ideas. Author: Yue Wu karahanoglu, isik

Hello, I was checking the code and a few things are not clear for me.
1. When you are calculating the distance function, what is the reason of adding this "im2double(mask)" to 'phi0'?

2. In the calculation of the divergence and the force there is always a normalization.I couldn't exactly get the reason for that. Can't this be fixed by changing the coefficient 'mu'?

3. I think in the paper 'Active contours without edges' the normal direction is different than the implementation here. The paper states that when phi>0 we are inside the curve but in the implementation when phi>0 we are actually outside the curve C.

Thanks a lot.
Top Tags Applied by Yue
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active contour, algorithms, chan vese, computer vision, demo
Files Tagged by Yue View all
  • 1 - 2 of
  • 2
Updated   File Tags Downloads
(last 30 days) 		Comments Rating
09 Nov 2009 Screenshot Fast Sudoku Solver An algorithm to mimic human solving procedure for Sudoku puzzles Author: Yue Wu fun, solver, algorithms, sudoku, puzzle, games 179 0
26 Mar 2009 Screenshot Chan Vese Active Contours without edges Mainly implement three Chan Vese active contour ideas. Author: Yue Wu image force, mumford and shah, demo, vector image, active contour, chan vese 151 3
  • 5.0
5.0 | 1 rating
 

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