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Alessandro Mannini

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Computer Engineering - University of Florence - Italy

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24 Nov 2010 Screenshot Freeman Chain Code Gives Freeman chain code 8-connected representation of a boundary Author: Alessandro Mannini boundary, chain code, freeman, contour, chaincode, representation 82 13
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5.0 | 3 ratings
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09 May 2012 Freeman Chain Code Gives Freeman chain code 8-connected representation of a boundary Author: Alessandro Mannini

Hi Ann, look to my previous comments (ex. 19/3/2011) the b parameter is an array containing coords of boundary points that should be 8-connected. 8-connected means that if Bn is the n-th element of b and Bn+1 the next their x y coords should satisfy this relations: | Xn - Xn+1 |<=1 AND | Yn - Yn+1 |<=1. Start checking that with a simple example. Regards Alessandro
17 Apr 2012 Freeman Chain Code Gives Freeman chain code 8-connected representation of a boundary Author: Alessandro Mannini

Hi Frb, please note than b contains coords of boundary points order so that they are 8-connected. The find function you use return coords of boundary points but in a different order. From Matlab Help seems it scans matrix column by column. Best regards Alessandro
19 Mar 2011 Freeman Chain Code Gives Freeman chain code 8-connected representation of a boundary Author: Alessandro Mannini

Look at description inside source code:

% b - boundary as np-by-2 array;
% np is the number of pixels and each element is a pair (y,x) of
% pixel coordinates

For example, if you have 4 points p=(y,x) like this p1=(5,1);p2=(5,2);p3=(4,2);p4=(3,1) b is:

b = [ 5 1;5 2;4 2;3 1]

note that points must be 8-connected.
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30 Aug 2012 Freeman Chain Code Gives Freeman chain code 8-connected representation of a boundary Author: Alessandro Mannini Sinaga, Daurat

i was running this function and i get output like this :
CC =
x0:0
y0:0
code:[209x1 double], would you explain it for me ?
18 May 2012 Freeman Chain Code Gives Freeman chain code 8-connected representation of a boundary Author: Alessandro Mannini rana

would you tell me please the exact steps to run this code ??
than you :)
09 May 2012 Freeman Chain Code Gives Freeman chain code 8-connected representation of a boundary Author: Alessandro Mannini Mannini, Alessandro

Hi Ann, look to my previous comments (ex. 19/3/2011) the b parameter is an array containing coords of boundary points that should be 8-connected. 8-connected means that if Bn is the n-th element of b and Bn+1 the next their x y coords should satisfy this relations: | Xn - Xn+1 |<=1 AND | Yn - Yn+1 |<=1. Start checking that with a simple example. Regards Alessandro
08 May 2012 Freeman Chain Code Gives Freeman chain code 8-connected representation of a boundary Author: Alessandro Mannini Ann

i am trying to use this code on the image but i am getting the error "Curve isn't 8-connected in elements: "

what to do?
17 Apr 2012 Freeman Chain Code Gives Freeman chain code 8-connected representation of a boundary Author: Alessandro Mannini Mannini, Alessandro

Hi Frb, please note than b contains coords of boundary points order so that they are 8-connected. The find function you use return coords of boundary points but in a different order. From Matlab Help seems it scans matrix column by column. Best regards Alessandro
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boundary, chain code, chaincode, contour, freeman
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25 Jan 2013 Screenshot Iterative Closest Point An implementation of various ICP (iterative closest point) features. Author: Jakob Wilm icp, iterative closest poi..., bestfit, registration, matching 196 37
  • 4.61538
4.6 | 17 ratings
24 Nov 2010 Screenshot Freeman Chain Code Gives Freeman chain code 8-connected representation of a boundary Author: Alessandro Mannini boundary, chain code, freeman, contour, chaincode, representation 82 13
  • 5.0
5.0 | 3 ratings
24 May 2006 Screenshot Surface Curvature Vectorized surface curvature computation Author: Daniel Claxton curvature, gaussian, mean curvature, surface 59 11
  • 4.5
4.5 | 10 ratings

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