Avoid using repmat in CPD registration algorithm
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Hi all,
I'm running a coherent point drift (CPD) registration algorithm and I'm having trouble running it on large point clouds because I keep exceeding the maximum variable size. The line of code that is giving me trouble is:
G=repmat(x,[1 1 m])-permute(repmat(y,[1 1 n]),[3 2 1]);
The error message is:
??? Maximum variable size allowed by the program is exceeded.
Error in ==> repmat at 104
B = A(subs{:});
I'm wondering if anyone has any suggestions as how to avoid using repmat so I can run the code on large data sets.
Thanks!
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Respuesta aceptada
Sean de Wolski
el 24 de Oct. de 2012
bsxfun should be able to handle that.
Also, rather than using permute use reshape, permute is slow for big things.
G = bsxfun(@minus,x,reshape(y',1,3,[]))
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