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Only log interrupts if explictly enabled
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/*================================================================
* function w = multiIntensityWppc(image,pi,pj,rMin,sigmaX,sigmaIntensite,valeurMinW,
* subgrid,nrSubgrid,ncSubgrid,subpi)
* Input:
* [pi,pj] = index pair representation for MALTAB sparse matrices
* Output:
* w = affinity with IC at [pi,pj]
*
imageX,wiInOriginalImage,wwj,rMin,dataWpp.sigmaX,sigmaI,minW,subgrid{1,i},p(i),q(i),wi{i}
pixels i and j (corresponding to the sampling in pi,pj) are fully connected when d(i,j) <= rmin;
% test sequence
f = synimg(10);
[i,j] = cimgnbmap(size(f),2);
[ex,ey,egx,egy] = quadedgep(f);
a = affinityic(ex,ey,egx,egy,i,j)
show_dist_w(f,a);
* Stella X. Yu, Nov 19, 2001.
*=================================================================*/
# include "mex.h" # include "math.h" void mexFunction (
int nargout,
mxArray * out[],
int nargin,
const mxArray * in[]
)
{
/* declare variables */
int nr, nc, np, nW, total;
int i, j, k, t, ix, iy, jx, jy, nrSubgrid, ncSubgrid;
int * ir, * jc;
int squareDistance;
/* unsigned long *pi, *pj, *subpi; */
unsigned int * pi, * pj, * subpi;
double * w, * subgrid, * tmp;
double temp, a1, a2, wij;
double rMin;
double sigmaX, sigmaIntensite, valeurMinW;
double * image;
/* check argument */
if ( nargin< 11 ) {
mexErrMsgTxt ( "Eleven input arguments required" );
}
if ( nargout> 1 ) {
mexErrMsgTxt ( "Too many output arguments" );
}
/* get edgel information */
nr = mxGetM ( in[ 0 ]);
nc = mxGetN ( in[ 0 ]);
np = nr * nc;
/*printf("size: %d, %d, %d\n", nc, nr, np); */
image = mxGetPr ( in[ 0 ]);
/*get subgrid information*/
tmp = mxGetData ( in[ 8 ]);
nrSubgrid = ( int ) tmp[ 0 ];
/* printf("image end = %f ", image[np-1]); */
tmp = mxGetData ( in[ 9 ]);
ncSubgrid = ( int ) tmp[ 0 ];
if ( nrSubgrid* ncSubgrid != mxGetM ( in[ 7 ])* mxGetN ( in[ 7 ])) {
mexErrMsgTxt ( "Error in the size of the subgrid" );
}
subgrid = mxGetData ( in[ 7 ]);
nW = nrSubgrid * ncSubgrid;
/* get new index pair */
if (! mxIsUint32 ( in[ 1 ]) | ! mxIsUint32 ( in[ 2 ])) {
mexErrMsgTxt ( "Index pair shall be of type UINT32" );
}
if ( mxGetM ( in[ 2 ]) * mxGetN ( in[ 2 ]) != nW + 1 ) {
mexErrMsgTxt ( "Wrong index representation" );
}
pi = mxGetData ( in[ 1 ]);
pj = mxGetData ( in[ 2 ]);
subpi = mxGetData ( in[ 10 ]);
/* create output */
out[ 0 ] = mxCreateSparse ( nW, nW, pj[ nW], mxREAL);
if ( out[ 0 ]== NULL) {
mexErrMsgTxt ( "Not enough memory for the output matrix" );
}
w = mxGetPr ( out[ 0 ]);
ir = mxGetIr ( out[ 0 ]);
jc = mxGetJc ( out[ 0 ]);
rMin = mxGetScalar ( in[ 3 ]);
sigmaX = mxGetScalar ( in[ 4 ]);
sigmaIntensite= mxGetScalar ( in[ 5 ]);
valeurMinW = mxGetScalar ( in[ 6 ]);
a1 = 1.0 / ( sigmaX* sigmaX);
a2 = 1.0 / ( sigmaIntensite* sigmaIntensite );
/* computation */
total = 0 ;
for ( j= 0 ; j< nW; j++) {
t= ( int ) subgrid[ j]- 1 ; /*on parcourt tous les pixels de la sous-grille dans la grille d'origine*/
if ( ( t< 0 ) || ( t> np- 1 )) { printf ( "badddddd!" );}
/* printf("t = %d\n",t);
printf("j = %d\n",j); */
jc[ j] = total;
jx = t / nr; /* col */
jy = t % nr; /* row */
/* printf("pj[j+1] = %d\n",pj[j+1]); */
for ( k= pj[ j]; k< pj[ j+ 1 ]; k++) {
/* printf("k = %d\n",k); */
i = pi[ k]- 1 ;
ix = i / nr;
iy = i % nr;
squareDistance = ( ix- jx)*( ix- jx)+( iy- jy)*( iy- jy); /*abs(ix-jx)+abs(iy-jy);*/
if ( squareDistance <= rMin) { wij = 1 ;}
else {
temp = image[ i]- image[ t];
wij = exp (- squareDistance * a1 - temp* temp * a2 );
/*if(wij < valeurMinW)
wij = 0;*/
/*wij = exp( - temp*temp * a2 );*/
}
ir[ total] = ( int ) subpi[ k];
/* if (ir[total] >5000*5000 ) {printf("trouble! [%d,%d]\n",k,(int)subpi[k]);} */
w[ total] = wij;
total = total + 1 ;
} /* i */
} /* j */
jc[ nW] = total;
}
