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conv3d.c
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/*
convolve in 3D, see conv3d.m
FORMAT: v = conv3d(v, k [, o, t])
Input fields:
v 3D volume (logical or numeric)
k 3D convolution kernel (must be double)
- special 1x1 kernel values:
0 - only apply == threshold (values ~= thresh := 0)
1 - binary erode (full erosion!)
2 - simple binary dilate (only main directions, faces)
3 - complex binary dilate (edge neighbors)
4 - full binary dilate (vertex neighbors)
if input array is not logical, threshold must be
given, by default uses == threshold, add 64 to use
values >= thresh and -64 to use values <= thresh
32 - edge enhancer
48 - gradient magnitude
49 - mean gradient cosine/colinearity in 3x3x3 cube
- special 1x2 kernel values:
[fwhm, func] - build kernel with FWHM and func
func 0: gaussian
func 1: linear
- special 1x3 kernel values:
[ g1 , g2 , g3 ] - free spatial gradient
[+/-1, 0 , 0 ] - first dim gradient
[ 0 , +/-1, 0 ] - second dim gradient
[ 0 , 0 , +/-1] - third dim gradient
- special 1x4 kernel values:
[k1, k2, k3, func] - build kernel with FWHM
o output type (1x1 double, if not given or 0, as input)
1 - logical volume
t optional threshold value (see above)
Output fields:
v convolved and/or thresholded/computed volume
Note: for 1x1 kernel arguments 0 to 4 , a logical array with the
requested threshold is produced
% Version: v0.9d
% Build: 14062015
% Date: Jun-20 2014, 3:53 PM EST
% Author: Jochen Weber, SCAN Unit, Columbia University, NYC, NY, USA
% URL/Info: http://neuroelf.net/
% Copyright (c) 2010, 2014, Jochen Weber
% All rights reserved.
%
% Redistribution and use in source and binary forms, with or without
% modification, are permitted provided that the following conditions are met:
% * Redistributions of source code must retain the above copyright
% notice, this list of conditions and the following disclaimer.
% * Redistributions in binary form must reproduce the above copyright
% notice, this list of conditions and the following disclaimer in the
% documentation and/or other materials provided with the distribution.
% * Neither the name of Columbia University nor the
% names of its contributors may be used to endorse or promote products
% derived from this software without specific prior written permission.
%
% THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
% ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
% WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
% DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
% DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
% (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
% LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
% ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
% (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
% SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "conv3d.h"
/* create copy-from functions */
CONV3D_COPY_FPFD_TYPE_S( int8 , char )
CONV3D_COPY_FPFD_TYPE_S( int16, short )
CONV3D_COPY_FPFD_TYPE_S( int32, int )
CONV3D_COPY_FPFD_TYPE_U(uint8 , char )
CONV3D_COPY_FPFD_TYPE_U(uint16, short )
CONV3D_COPY_FPFD_TYPE_U(uint32, int )
CONV3D_COPY_FPFD_TYPE_F(single, float )
CONV3D_COPY_FPFD_TYPE_F(double, double)
/* here comes the main function */
void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
{
/* output type, type of call, type of threshold, and threshold */
double otyped = 0.0;
unsigned char otype = 0;
unsigned char tot = 0;
double othresh = 1.0;
/* image arg mxArray class, and content pointers and dims */
const mxArray *ia = NULL;
const int *idim = NULL;
mxClassID iclass;
/* kernel arg mxArray class, and content pointers and dims and value */
const mxArray *ka = NULL;
unsigned long knd = 0;
unsigned long kne = 0;
const int *kdim = NULL;
int kdims[3] = {1, 1, 1};
const double *kad = NULL;
double kdv = 0.0;
signed char ksv = 0;
/* self-created kernel array */
int kdimx = 0, kdimy = 0, kdimz = 0;
const unsigned char *ksfau8 = NULL;
/* summation array(s) */
mxArray *suma = NULL;
unsigned long sumoffs[3] = {1, 1, 1};
unsigned long soffx = 0, soffy = 0, soffz = 0;
int sdims[3], sdimx = 0, sdimy = 0, sdimz = 0;
unsigned char *sumau8 = NULL, *sumpu8 = NULL;
double *sumad = NULL, *sumpd = NULL;
/* temp array(s) */
mxArray *tmpa = NULL;
unsigned char *tmpau8 = NULL, *tmppu8 = NULL;
double *tmpad = NULL, *tmppd = NULL;
unsigned long netmp = 0;
/* number of elements for fast convolution copy/add */
unsigned long necpy = 0, sumpos = 0;
/* convolution offsets (into sum/temp array) */
signed long offxy = 0, offy = 0, offz = 0, offtmp = 0;
/* kernel position */
signed long krnx = 0, krny = 0, krnz = 0;
/* output array */
mxArray *outa = NULL;
int odims[3] = {1, 1, 1};
void *outav = NULL;
unsigned char *outau8 = NULL;
unsigned long neout = 0, necnt = 0;
/* erosion/test threshold */
unsigned char ertu8 = 0;
float erts = 0.0;
/* flexmask pointers */
const mxArray *flexin[6];
mxArray *flexout[2];
/* in case we need to create arrays from scratch */
int cadim[3] = {1, 1, 1};
/* isinfnan.h variables */
VARS_FOR_ISINFNAN
/* variable output string */
/* char vstr[256]; */
/* the code starts here */
/* check number of in/out arguments */
if (nlhs > 1 ||
nrhs < 2 ||
nrhs > 5)
mexErrMsgTxt(conv3d_err_numberofargs);
/* check first argument */
ia = prhs[0];
if ((!mxIsLogical(ia) &&
!mxIsNumeric(ia)) ||
( mxGetNumberOfElements(ia) == 0) ||
( mxGetNumberOfDimensions(ia) > 3))
mexErrMsgTxt(conv3d_err_badfirstarg);
/* get dims, etc. */
idim = mxGetDimensions(ia);
odims[0] = idim[0];
odims[1] = idim[1];
if (mxGetNumberOfDimensions(ia) > 2)
odims[2] = idim[2];
neout = odims[0] * odims[1] * odims[2];
iclass = mxGetClassID(ia);
/* check second argument */
ka = prhs[1];
if (!mxIsDouble(ka) ||
(mxGetNumberOfElements(ka) == 0) ||
(mxGetNumberOfDimensions(ka) > 3))
mexErrMsgTxt(conv3d_err_badsecondarg);
/* get dims, etc. */
kdim = mxGetDimensions(ka);
knd = mxGetNumberOfDimensions(ka);
kne = mxGetNumberOfElements(ka);
kad = (const double*) mxGetPr(ka);
kdims[0] = kdim[0];
kdims[1] = kdim[1];
if (knd > 2)
kdims[2] = kdim[2];
/* initialize IS_* macros */
INIT_INF_NAN_BAD_VAL()
/* check optional argument output type (type and size) */
if (nrhs > 2) {
if (!mxIsDouble(prhs[2]) ||
(mxGetNumberOfElements(prhs[2]) != 1))
mexErrMsgTxt(conv3d_err_invalidarg_otype);
otyped = *(const double*) mxGetPr(prhs[2]);
if (mxIsInf(otyped) ||
mxIsNaN(otyped) ||
((otyped < 0.0) ||
(otyped > 3.0)))
mexErrMsgTxt(conv3d_err_invalidarg_otype);
/* which output requested */
otype = (unsigned char) otyped;
}
/* check optional argument threshold */
if (nrhs > 3) {
if (!mxIsDouble(prhs[3]) ||
(mxGetNumberOfElements(prhs[3]) != 1))
mexErrMsgTxt(conv3d_err_invalidarg_thresh);
/* get threshold value */
othresh = *(const double*) mxGetPr(prhs[3]);
if (mxIsInf(othresh) || mxIsNaN(othresh))
mexErrMsgTxt(conv3d_err_invalidarg_thresh);
}
/* check class and threshold value */
switch (iclass) {
case mxINT8_CLASS:
if (othresh < -128.0 || othresh >= 127.5)
mexErrMsgTxt(conv3d_err_badthreshvalue);
break;
case mxINT16_CLASS:
if (othresh < -32768.0 || othresh >= 32767.5)
mexErrMsgTxt(conv3d_err_badthreshvalue);
break;
case mxINT32_CLASS:
if (othresh < -2147483648.0 || othresh >= 2147483647.5)
mexErrMsgTxt(conv3d_err_badthreshvalue);
break;
case mxLOGICAL_CLASS:
if (othresh < 0.0 || othresh > 1.0)
mexErrMsgTxt(conv3d_err_badthreshvalue);
break;
case mxUINT8_CLASS:
if (othresh < 0.0 || othresh >= 255.5)
mexErrMsgTxt(conv3d_err_badthreshvalue);
break;
case mxUINT16_CLASS:
if (othresh < 0.0 || othresh >= 65535.5)
mexErrMsgTxt(conv3d_err_badthreshvalue);
break;
case mxUINT32_CLASS:
if (othresh < 0.0 || othresh > 4294967295.5)
mexErrMsgTxt(conv3d_err_badthreshvalue);
break;
case mxSINGLE_CLASS:
erts = (float) othresh;
if (mxIsInf((double) erts) ||
mxIsNaN((double) erts))
mexErrMsgTxt(conv3d_err_badthreshvalue);
break;
case mxDOUBLE_CLASS:
break;
default:
mexErrMsgTxt(conv3d_err_badinputclass);
}
/* checks completed, let's rumble... */
/* type of kernel argument decides what to do */
/* multiply with size(1) and (ndims-1) to find out special value */
switch (kne) {
/* 1x1 special value (erosion, dilation, gradient, ...) */
case 1:
/* get scalar kernel value (from double) */
kdv = *kad;
if (mxIsInf(kdv) ||
mxIsNaN(kdv) ||
(kdv < -64.0) ||
(kdv > 127.0))
mexErrMsgTxt(conv3d_err_badkernelvalue);
ksv = (signed char) kdv;
/* default thresholding (if at all) is == threshold */
tot = CONV3D_TOT_EQ;
/* less/equal thresholding */
if (ksv < 0) {
tot = CONV3D_TOT_LE;
ksv += 64;
/* greater/equal thresholding */
} else if (ksv > 63) {
tot = CONV3D_TOT_GE;
ksv -= 64;
}
/* force boolean for erosion/dilation */
if (((ksv > 0) &&
(ksv < 5)) ||
(iclass == mxLOGICAL_CLASS))
otype = 1;
/* copy 1. arg and prepare 3 new args for call to flexin */
flexin[0] = prhs[0];
flexin[1] = mxCreateNumericArray(2, cadim, mxDOUBLE_CLASS, mxREAL);
if (flexin[1] == NULL)
mexErrMsgTxt(conv3d_err_createarrayfailed);
flexin[2] = mxCreateNumericArray(2, cadim, mxDOUBLE_CLASS, mxREAL);
if (flexin[2] == NULL)
mexErrMsgTxt(conv3d_err_createarrayfailed);
flexin[3] = mxCreateNumericArray(2, cadim, mxDOUBLE_CLASS, mxREAL);
if (flexin[3] == NULL)
mexErrMsgTxt(conv3d_err_createarrayfailed);
/* second arg: thresh */
*((double *) mxGetPr(flexin[1])) = othresh;
/* third arg masking type */
switch (tot) {
case CONV3D_TOT_LE:
*((double *) mxGetPr(flexin[2])) = -1.0;
break;
case CONV3D_TOT_GE:
*((double *) mxGetPr(flexin[2])) = 1.0;
break;
}
/* special case, do not apply == mask on special task */
if ((ksv > 4) &&
(tot == CONV3D_TOT_EQ))
*((double *) mxGetPr(flexin[2])) = 2.0;
/* for all simple tasks set to boolean */
if (ksv < 5)
*((double *) mxGetPr(flexin[3])) = 1.0;
/* for all other tasks to double */
else
*((double *) mxGetPr(flexin[3])) = 2.0;
/* only masking/copying is requested */
if (ksv == 0) {
/* call flexmask */
mexCallMATLAB(1, plhs, 4, (mxArray**) ((void**) flexin), "flexmask");
/* destroy arrays */
mxDestroyArray((mxArray*) ((void*) flexin[1]));
mxDestroyArray((mxArray*) ((void*) flexin[2]));
mxDestroyArray((mxArray*) ((void*) flexin[3]));
/* return */
return;
}
/* erosion/dilation requested */
if (ksv < 5) {
/* we must increase the dimensions by two in each direction */
sdims[0] = odims[0] + 2;
sdims[1] = odims[1] + 2;
sdims[2] = odims[2] + 2;
sdimx = *sdims;
sdimy = sdims[1];
sdimz = sdims[2];
/* we need 5. arg, so further preparations */
cadim[1] = 3;
flexin[4] = mxCreateNumericArray(2, cadim, mxDOUBLE_CLASS, mxREAL);
if (flexin[4] == NULL)
mexErrMsgTxt(conv3d_err_createarrayfailed);
/* add two to the dimension of the data */
tmpad = (double *) mxGetPr(flexin[4]);
tmpad[0] = (double) sdimx;
tmpad[1] = (double) sdimy;
tmpad[2] = (double) sdimz;
/* call flexmask */
mexCallMATLAB(2, flexout, 5, (mxArray**) ((void**) flexin), "flexmask");
/* destroy temporary arrays */
mxDestroyArray((mxArray*) ((void*) flexin[1]));
mxDestroyArray((mxArray*) ((void*) flexin[2]));
mxDestroyArray((mxArray*) ((void*) flexin[3]));
mxDestroyArray((mxArray*) ((void*) flexin[4]));
/* get pointer */
tmpau8 = (unsigned char*) mxGetData(flexout[0]);
/* default threshold is 1 */
ertu8 = 1;
/* if number not set, get number */
necpy = (unsigned long) *((double *) mxGetPr(flexout[1]));
if (necpy == 0) {
tmppu8 = tmpau8;
for (necnt = neout; necnt > 0; --necnt)
if (*tmppu8++ > 0)
++necpy;
}
/* create kernel and summation array */
CONV3D_CREATEARRAY(UINT8, sdims, suma, unsigned char, sumau8)
CONV3D_CREATEARRAY(LOGICAL, odims, outa, unsigned char, outau8)
plhs[0] = outa;
/* fill kernel array */
switch (ksv) {
/* erode */
case 1:
ksfau8 = conv3d_krn_fullcb;
ertu8 = 27;
break;
/* dilate (along faces) */
case 2:
ksfau8 = conv3d_krn_dilate1;
break;
/* dilate (along faces and edges) */
case 3:
ksfau8 = conv3d_krn_dilate2;
break;
/* dilate (full 3x3x3 cube) */
case 4:
ksfau8 = conv3d_krn_fullcb;
break;
}
/* get offsets into array */
offxy = sdimx * sdimy;
offtmp = offxy + sdimx + 1;
necnt = offxy * sdimz - 2 * offtmp;
/* set pointers further */
tmppu8 = &tmpau8[offtmp];
sumpu8 = &sumau8[offtmp];
/* cheap convolution (swapping the tmp/kernel logic) */
if ((( (double) neout / (double) necpy ) > 6.0) ||
(ksv == 2)) {
/* for faces dilation, even cheaper */
if (ksv == 2) {
/* iterate over data and set at specified positions */
for ( ; necnt > 0; --necnt) {
if (*tmppu8++ > 0) {
sumpu8[-offxy] = 1;
sumpu8[-sdimx] = 1;
sumpu8[-1] = 1;
*sumpu8 = 1;
sumpu8[1] = 1;
sumpu8[sdimx] = 1;
sumpu8[offxy] = 1;
}
++sumpu8;
}
/* another cheap solution for full kernel */
} else if (ksv != 3) {
/* iterate over data and set 3x3x3 instead */
for ( ; necnt > 0; --necnt) {
if (*tmppu8++ > 0) {
for (krnz = -offxy; krnz <= offxy; krnz += offxy) {
for (krny = -sdimx; krny <= sdimx; krny += sdimx) {
offy = krnz + krny - 2;
++sumpu8[++offy];
++sumpu8[++offy];
++sumpu8[++offy];
}
}
}
++sumpu8;
}
/* special convolution (must be case 3 !) */
} else {
/* iterate over data and apply kernel instead */
for ( ; necnt > 0; --necnt) {
if (*tmppu8++ > 0) {
ksfau8 = conv3d_krn_dilate2;
for (krnz = -offxy; krnz <= offxy; krnz += offxy) {
for (krny = -sdimx; krny <= sdimx; krny += sdimx) {
offy = krnz + krny;
for (krnx = -1; krnx <= 1; ++krnx) {
if (*ksfau8++ > 0)
++sumpu8[offy + krnx];
}
}
}
}
++sumpu8;
}
}
/* full convolution */
} else {
/* iterate over kernel dimensions */
for (krnz = 0; krnz < 3; ++krnz) {
offz = offxy * krnz;
for (krny = 0; krny < 3; ++krny) {
offy = offz + sdimx * krny;
for (krnx = 0; krnx < 3; ++krnx) {
if (*ksfau8++ > 0) {
tmppu8 = &tmpau8[offtmp];
sumpu8 = &sumau8[offy + krnx];
for (sumpos = necnt; sumpos > 0; --sumpos)
*sumpu8++ += *tmppu8++;
}
}
}
}
}
/* set 1 in output from sum where > ert */
conv3d_set1ge_frompart_uint8(sdims, sumau8, odims, outau8, sumoffs, ertu8);
/* destroy temporary arrays and return early */
mxDestroyArray(suma);
mxDestroyArray(tmpa);
mxDestroyArray(flexout[1]);
mxDestroyArray(flexout[0]);
return;
}
mexErrMsgTxt(conv3d_err_notyetimplemented);
/* other special meanings here ... */
switch (ksv) {
/* edge enhancement */
case 32:
break;
/* gradient magnitude */
case 48:
break;
/* mean colinearity */
case 49:
break;
/* reject other cases */
default:
mexErrMsgTxt(conv3d_err_invalidarg_kernel);
}
break;
/* uniform smoothing */
case 2:
mexErrMsgTxt(conv3d_err_notyetimplemented);
return;
break;
/* variable smoothing, non uniform edge enhancing, */
/* more gradient stuff etc. */
case 4:
mexErrMsgTxt(conv3d_err_notyetimplemented);
return;
break;
}
/* the kernel argument *must* be odd in each dim! */
if (((kdims[0] % 2) != 1) ||
((kdims[1] % 2) != 1) ||
((kdims[2] % 2) != 1))
mexErrMsgTxt(conv3d_err_invalidarg_kernel);
/* put input array in double array (use flexmask) */
/* copy 1. arg and prepare 4 new args for call */
flexin[0] = prhs[0];
flexin[1] = mxCreateNumericArray(2, cadim, mxDOUBLE_CLASS, mxREAL);
if (flexin[1] == NULL)
mexErrMsgTxt(conv3d_err_createarrayfailed);
flexin[2] = mxCreateNumericArray(2, cadim, mxDOUBLE_CLASS, mxREAL);
if (flexin[2] == NULL)
mexErrMsgTxt(conv3d_err_createarrayfailed);
flexin[3] = mxCreateNumericArray(2, cadim, mxDOUBLE_CLASS, mxREAL);
if (flexin[3] == NULL)
mexErrMsgTxt(conv3d_err_createarrayfailed);
cadim[1] = 3;
flexin[4] = mxCreateNumericArray(2, cadim, mxDOUBLE_CLASS, mxREAL);
if (flexin[4] == NULL)
mexErrMsgTxt(conv3d_err_createarrayfailed);
/* masking is off */
*((double *) mxGetPr(flexin[2])) = 2.0;
/* force double */
*((double *) mxGetPr(flexin[3])) = 2.0;
/* we must increase the dimensions by two in each direction */
kdimx = kdims[0];
kdimy = kdims[1];
kdimz = kdims[2];
soffx = kdimx - 1;
soffy = kdimy - 1;
soffz = kdimz - 1;
sumoffs[0] = soffx;
sumoffs[1] = soffy;
sumoffs[2] = soffz;
sdims[0] = odims[0] + 2 * kdimx - 2;
sdims[1] = odims[1] + 2 * kdimy - 2;
sdims[2] = odims[2] + 2 * kdimz - 2;
sdimx = *sdims;
sdimy = sdims[1];
sdimz = sdims[2];
/* add two to the dimension of the data */
tmpad = (double *) mxGetPr(flexin[4]);
tmpad[0] = (double) sdimx;
tmpad[1] = (double) sdims[1];
tmpad[2] = (double) sdims[2];
/* call flexmask and get pointer to data */
mexCallMATLAB(1, flexout, 5, (mxArray**) ((void**) flexin), "flexmask");
mxDestroyArray((mxArray*) ((void*) flexin[1]));
mxDestroyArray((mxArray*) ((void*) flexin[2]));
mxDestroyArray((mxArray*) ((void*) flexin[3]));
mxDestroyArray((mxArray*) ((void*) flexin[4]));
tmpad = (double *) mxGetPr(flexout[0]);
/* create summation array */
CONV3D_CREATEARRAY(DOUBLE, sdims, suma, double, sumad)
/* get offsets into array */
offxy = sdimx * sdimy;
offtmp = soffx * offxy + soffy * sdimx + soffz;
netmp = offxy * sdimz;
necnt = netmp - 2 * offtmp;
/* expand 6 edge slices */
for (krny = netmp - sdimx; krny >= 0; krny -= sdimx) {
tmppd = &tmpad[krny + soffx - 1];
sumpd = &tmpad[krny + sdimx - soffx];
for (krnx = soffx; krnx > 0; --krnx) {
*tmppd = tmppd[1];
--tmppd;
*sumpd = sumpd[-1];
++sumpd;
}
}
for (krnz = netmp - offxy; krnz >= 0; krnz -= offxy) {
for (krnx = sdimx-1; krnx >= 0; --krnx) {
tmppd = &tmpad[krnz + krnx + soffy * sdimx - sdimx];
sumpd = &tmpad[krnz + krnx + offxy - soffy * sdimx];
for (krny = soffy; krny > 0; --krny) {
*tmppd = tmppd[sdimx];
tmppd = &tmppd[-sdimx];
*sumpd = sumpd[-sdimx];
sumpd = &sumpd[sdimx];
}
}
}
for (krnz = (soffz - 1) * offxy; krnz >= 0; krnz -= offxy) {
tmppd = &tmpad[krnz];
sumpd = &tmpad[krnz+offxy];
for (krnx = offxy - 1; krnx >= 0; --krnx)
*tmppd++ = *sumpd++;
}
for (krnz = (sdimz - soffz) * offxy; krnz < netmp; krnz += offxy) {
tmppd = &tmpad[krnz];
sumpd = &tmpad[krnz-offxy];
for (krnx = offxy - 1; krnx >= 0; --krnx)
*tmppd++ = *sumpd++;
}
/* get offsets into array */
soffx = (unsigned long) (((double) soffx) / 2.0);
soffy = (unsigned long) (((double) soffy) / 2.0);
soffz = (unsigned long) (((double) soffz) / 2.0);
offtmp = soffx * offxy + soffy * sdimx + soffz;
necnt = netmp - 2 * offtmp;
/* loop over kernel elements */
for (krnz = 0; krnz < kdimz; ++krnz) {
offz = offxy * krnz;
for (krny = 0; krny < kdimy; ++krny) {
offy = offz + sdimx * krny;
for (krnx = 0; krnx < kdimx; ++krnx) {
kdv = *kad++;
if (kdv != 0.0) {
tmppd = &tmpad[offtmp];
sumpd = &sumad[offy + krnx];
for (sumpos = necnt; sumpos > 0; --sumpos) {
otyped = *tmppd++;
IF_IS_GOOD_VAL(otyped) {
*sumpd++ += otyped * kdv;
} else {
++sumpd;
}
}
}
}
}
}
/* delete temporary array */
mxDestroyArray(flexout[0]);
/* what kind of output requested */
switch (otype) {
/* as input */
case 0:
plhs[0] = mxCreateNumericArray(3, odims, iclass, mxREAL);
break;
/* thresholded */
case 1:
plhs[0] = mxCreateNumericArray(3, odims, mxLOGICAL_CLASS, mxREAL);
break;
/* force to double */
case 2:
plhs[0] = mxCreateNumericArray(3, odims, mxDOUBLE_CLASS, mxREAL);
break;
/* force to single */
case 3:
plhs[0] = mxCreateNumericArray(3, odims, mxSINGLE_CLASS, mxREAL);
break;
}
/* check output array */
if (plhs[0] == NULL)
mexErrMsgTxt(conv3d_err_createarrayfailed);
outav = (void *) mxGetData(plhs[0]);
/* depends on class */
switch (mxGetClassID(plhs[0])) {
case mxLOGICAL_CLASS : conv3d_set1ge_frompart_double( sdims, sumad, odims, (unsigned char *) outav, sumoffs, othresh); break;
case mxINT8_CLASS : conv3d_copy_frompart_fromdbl_int8( sdims, sumad, odims, ( signed char *) outav, sumoffs); break;
case mxINT16_CLASS : conv3d_copy_frompart_fromdbl_int16( sdims, sumad, odims, ( signed short *) outav, sumoffs); break;
case mxINT32_CLASS : conv3d_copy_frompart_fromdbl_int32( sdims, sumad, odims, ( signed int *) outav, sumoffs); break;
case mxUINT8_CLASS : conv3d_copy_frompart_fromdbl_uint8( sdims, sumad, odims, (unsigned char *) outav, sumoffs); break;
case mxUINT16_CLASS : conv3d_copy_frompart_fromdbl_uint16(sdims, sumad, odims, (unsigned short *) outav, sumoffs); break;
case mxUINT32_CLASS : conv3d_copy_frompart_fromdbl_uint32(sdims, sumad, odims, (unsigned int *) outav, sumoffs); break;
case mxSINGLE_CLASS : conv3d_copy_frompart_fromdbl_single(sdims, sumad, odims, ( float *) outav, sumoffs); break;
case mxDOUBLE_CLASS : conv3d_copy_frompart_fromdbl_double(sdims, sumad, odims, ( double *) outav, sumoffs); break;
default: /* already handled by argument check at the beginning */ break;
}
/* delete temp array */
mxDestroyArray(suma);
}
unsigned long conv3d_set1ge_frompart_uint8(const int *snd, const unsigned char *sd, const int *tnd, unsigned char *td, const unsigned long *off, unsigned char t)
{
unsigned long xc, yc, zc, xy, x1, y1, z1, x2, y2, z2, to, yo, zo;
x1 = *snd++;
y1 = *snd;
xy = x1 * y1;
z1 = 0;
x2 = *tnd++;
y2 = *tnd++;
z2 = *tnd;
to = off[0] + off[1] * x1 + off[2] * xy;
for (zc = 0; zc < z2; ++zc) {
zo = to + zc * xy;
for (yc = 0; yc < y2; ++yc) {
yo = zo + yc * x1;
for (xc = 0; xc < x2; ++xc) {
if (sd[yo++] >= t) {
*td = 1;
++z1;
}
++td;
}
}
}
return z1;
}
void conv3d_set1ge_frompart_double(const int *snd, const double *sd, const int *tnd, unsigned char *td, const unsigned long *off, double t)
{
unsigned long xc, yc, zc, xy, x1, y1, x2, y2, z2, to, yo, zo;
x1 = *snd++;
y1 = *snd;
xy = x1 * y1;
x2 = *tnd++;
y2 = *tnd++;
z2 = *tnd;
to = off[0] + off[1] * x1 + off[2] * xy;
for (zc = 0; zc < z2; ++zc) {
zo = to + zc * xy;
for (yc = 0; yc < y2; ++yc) {
yo = zo + yc * x1 - 1;
for (xc = 0; xc < x2; ++xc) {
if (sd[++yo] >= t)
*td = 1;
++td;
}
}
}
}