Rank: 2691 based on 24 downloads (last 30 days) and 1 file submitted
photo

Trevor Linton

E-mail

Personal Profile:
Professional Interests:

 

Watch this Author's files

 

Files Posted by Trevor
  • 1 - 1 of
  • 1
Updated   File Tags Downloads
(last 30 days) 		Comments Rating
13 Aug 2008 Tensor Voting Framework Implementation of the 2D medioni tensor framework Author: Trevor Linton tensor voting, gerard medioni, image analysis, 2d, image processing 24 10
  • 4.75
4.8 | 4 ratings
Comments and Ratings by Trevor View all
  • 1 - 2 of
  • 2
Updated File Comments Rating
06 Apr 2009 Tensor Voting Framework Implementation of the 2D medioni tensor framework Author: Trevor Linton

Hi Ben,

You're right the example code that reads in the edge files is wrong, however these were just used for examples.

The actual tensor voting code is correct however. Let me know if you notice any problems, feel free to contact me (tlinton@cs.utah.edu).

-t
28 Oct 2008 Tensor Voting Framework Implementation of the 2D medioni tensor framework Author: Trevor Linton

I apologize, the sparse field simply converts points to initial ball tensors, the refined is the ball voting and calc_vote_stick is the actual stick voting.
Comments and Ratings on Trevor's Files View all
  • 1 - 5 of
  • 10
Updated File Comment by Comments Rating
07 Mar 2013 Tensor Voting Framework Implementation of the 2D medioni tensor framework Author: Trevor Linton Le

Your code is help me a lot to understand TV.While I'm reading the book you referenced --Topics in Computer Vision,I'm confused by a question: it mentioned an equation 5.4,is about to say "the first order voting field for a unit stick voter aligned with the z-axis": SFO(d, θ) = DF(s,κ,σ)[−cos2θ)
−sin(2θ)]
,but how does ti reflected in your code?
Could you help me?
21 Aug 2011 Tensor Voting Framework Implementation of the 2D medioni tensor framework Author: Trevor Linton Koushik

In read_dot_edge_file.m file the edge input is converted to tensor value using the following codes. My question is what is the theory behind this. CAN ANYBODY HELP???

h = max(buf(:,1));
w = max(buf(:,2));
T = zeros(h,w,2,2);
for i=1:n
x = cos(buf(i,3)*pi/180 + 90*pi/180);
y = sin(buf(i,3)*pi/180 + 90*pi/180);
T(h+1-buf(i,1),buf(i,2),1,1) = x^2;
T(h+1-buf(i,1),buf(i,2),1,2) = x*y;
T(h+1-buf(i,1),buf(i,2),2,1) = x*y;
T(h+1-buf(i,1),buf(i,2),2,2) = y^2;
end

18 Aug 2011 Tensor Voting Framework Implementation of the 2D medioni tensor framework Author: Trevor Linton Walker, Chris

Hi,
In your convert_tensor_ev function, you have determine eigenvalues and eigenvectors using these commands:
% trace/2
t = (K11+K22)/2;

a = K11 - t;
b = K12;

ab2 = sqrt(a.^2+b.^2);
o3 = ab2 + t;
o4 = -ab2 + t;

theta = atan2( ab2-a, b );

where does the maths that underlies these commands come from?. I typed the following into Wolfram Alpha:
l1*{{cos(t)*cos(t),cos(t)*sin(t)},{cos(t)*sin(t),sin(t)*sin(t)}}+l2*{{sin(t)*sin(t),-cos(t)*sin(t)},{-cos(t)*sin(t),cos(t)*cos(t)}}

and I get different answers for the eigenvalues and eigenvectors.
Any help would be appreciated.
thanks
Chris Walker
26 Jul 2010 Tensor Voting Framework Implementation of the 2D medioni tensor framework Author: Trevor Linton Arora, Dev

Hi, I am not able to understand the concept how an image is converted into Tensor. Can anybody please explain me.
Thanks
09 Apr 2010 Tensor Voting Framework Implementation of the 2D medioni tensor framework Author: Trevor Linton Account, Franz

Cool work. Thanks for sharing
Top Tags Applied by Trevor
  • 1 - 5 of
  • 5
2d, gerard medioni, image analysis, image processing, tensor voting
Files Tagged by Trevor
  • 1 - 1 of
  • 1
Updated   File Tags Downloads
(last 30 days) 		Comments Rating
13 Aug 2008 Tensor Voting Framework Implementation of the 2D medioni tensor framework Author: Trevor Linton tensor voting, gerard medioni, image analysis, 2d, image processing 24 10
  • 4.75
4.8 | 4 ratings

Contact us