[IPOL discuss] use of Eigen for PCA/SVD computation in demo blm_color_dimensional_filtering

[Nicolas Limare]

> I you are still interested, I've isolated the SVD function of GSL.

Nice clean and minimal code isolation. Two remarks:
* "source" is a bash command, not a sh command. In recent Debian
  distributions (and others), sh is a strict minimal Bourne shell. You
  can replace "source xx" by ". ./xx"
* If I understand correctly, this code uses a builtin blas
  implementation. Is there a possibility to use another implementation
  (CPU-optimized, like Atlas or Intel MKL) already installed on the
  system?

-- 
Nicolas LIMARE - CMLA - ENS Cachan    http://www.cmla.ens-cachan.fr/~limare/
IPOL - image processing on line                          http://www.ipol.im/
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