Re: [boost] GIL -request interface to ublas

From: Lubomir Bourdev (lbourdev_at_[hidden])
Date: 2006-11-17 16:40:57

I haven't played much with ublas, but it seems like you can easily
construct a GIL view from ublas matrix:

typedef boost::numeric::ublas::matrix<float> Matrix;
Matrix m(3, 3);

float* data=&m.data()[0];   // is there a better way?
gray32f_view_t gv=interleaved_view(m.size1(), m.size2(), 
                   (gray32f_ptr_t)data,
m.size1()*sizeof(Matrix::value_type)); 
fill_pixels(gv, bits32f(0));

Lubomir

> -----Original Message-----
> From: boost-bounces_at_[hidden] 
> [mailto:boost-bounces_at_[hidden]] On Behalf Of N H
> Sent: Thursday, November 16, 2006 7:23 PM
> To: boost_at_[hidden]
> Subject: [boost] GIL -request interface to ublas
> 
> vigra's inheritance structure is good for multi dimensional 
> operation(tensor operation).
> 
> vigra::MultiArrayView -> vigra::MultiArray 	-> vigra::Matrix
> vigra::MultiArrayView -> vigra::BasicImageView
> 
> But I can't find similar relation among
> GIL, boost::numeric::ublas, boost::multi_array
> 
> My request is  interface to ublas like this
> 
> view_mat = view(ublas::matrix)
> gray32f_image_t dist_img=resampling(view_mat)
> 
> Then GIL can use LAPCK via ublas.
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