int main(int argc, char *argv[])
{
int tI0,
ok = 1,
option,
usage = 0,
nItr = 200,
nonMan = 0;
unsigned int flags = 0;
double lambda,
mu,
kPB = 0.1000,
kSB = 1.0000,
dPB = 0.2500,
dSB = 0.1000;
FILE *fP = NULL;
char *inObjFileStr,
*outObjFileStr;
const char *errMsgStr;
WlzErrorNum errNum = WLZ_ERR_NONE;
WlzObject *obj = NULL;
static char optList[] = "hNo:l:m:n:p:s:P:S:";
const char inObjFileStrDef[] = "-",
outObjFileStrDef[] = "-",
setMsg[] = "set on command line",
notSetMsg[] = "not set / default ";
opterr = 0;
inObjFileStr = (char *)inObjFileStrDef;
outObjFileStr = (char *)outObjFileStrDef;
while(ok && ((option = getopt(argc, argv, optList)) != EOF))
{
switch(option)
{
case 'N':
nonMan = 1;
break;
case 'o':
outObjFileStr = optarg;
break;
case 'l':
if((sscanf(optarg, "%lg", &lambda) != 1) ||
(fabs(lambda) < DBL_EPSILON) || (fabs(lambda) > 1.0))
{
usage = 1;
ok = 0;
}
flags |= WLZWLZ_CTRFFLAGS_LAMBDA;
break;
case 'm':
if((sscanf(optarg, "%lg", &mu) != 1) ||
(fabs(mu) < DBL_EPSILON) || (fabs(mu) > 1.0))
{
usage = 1;
ok = 0;
}
flags |= WLZWLZ_CTRFFLAGS_MU;
break;
case 'n':
if((sscanf(optarg, "%d", &nItr) != 1) || (nItr < 0))
{
usage = 1;
ok = 0;
}
flags |= WLZWLZ_CTRFFLAGS_NITR;
break;
case 'p':
if((sscanf(optarg, "%lg", &kPB) != 1) ||
(kPB < DBL_EPSILON) || (kPB > 1.0))
{
usage = 1;
ok = 0;
}
flags |= WLZWLZ_CTRFFLAGS_KPB;
break;
case 's':
if((sscanf(optarg, "%lg", &kSB) != 1) ||
(kSB < 1.0) || (kSB > 2.0))
{
usage = 1;
ok = 0;
}
flags |= WLZWLZ_CTRFFLAGS_KSB;
break;
case 'P':
if((sscanf(optarg, "%lg", &dPB) != 1) ||
(dPB < DBL_EPSILON) || (dPB > 1.0))
{
usage = 1;
ok = 0;
}
flags |= WLZWLZ_CTRFFLAGS_DPB;
break;
case 'S':
if((sscanf(optarg, "%lg", &dSB) != 1) ||
(dSB < DBL_EPSILON) || (dSB > 1.0))
{
usage = 1;
ok = 0;
}
flags |= WLZWLZ_CTRFFLAGS_DSB;
break;
case 'h':
default:
usage = 1;
ok = 0;
break;
}
}
if(ok)
{
if((inObjFileStr == NULL) || (*inObjFileStr == '\0') ||
(outObjFileStr == NULL) || (*outObjFileStr == '\0'))
{
ok = 0;
usage = 1;
}
if(ok && (optind < argc))
{
if((optind + 1) != argc)
{
usage = 1;
ok = 0;
}
else
{
inObjFileStr = *(argv + optind);
}
}
}
if(ok)
{
if((inObjFileStr == NULL) ||
(*inObjFileStr == '\0') ||
((fP = (strcmp(inObjFileStr, "-")?
fopen(inObjFileStr, "r"): stdin)) == NULL) ||
((obj = WlzAssignObject(WlzReadObj(fP, &errNum), NULL)) == NULL) ||
(errNum != WLZ_ERR_NONE))
{
ok = 0;
(void )fprintf(stderr,
"%s: failed to read object from file %s\n",
*argv, inObjFileStr);
}
if(fP && strcmp(inObjFileStr, "-"))
{
fclose(fP);
}
}
if(ok)
{
tI0 = WLZWLZ_CTRFFLAGS_LAMBDA | WLZWLZ_CTRFFLAGS_MU;
if((flags & tI0) != tI0)
{
errNum = WlzGMFilterGeomLPParam(&lambda, &mu, &tI0,
kPB, kSB, dPB, dSB);
}
if((flags & WLZWLZ_CTRFFLAGS_NITR) == 0)
{
nItr = tI0;
}
if(errNum != WLZ_ERR_NONE)
{
ok = 0;
(void )WlzStringFromErrorNum(errNum, &errMsgStr);
(void )fprintf(stderr,
"%s: Failed to compute filter parameters lambda and mu from the\n"
" band pass and band stop frequency parameters (%s).\n",
argv[0],
errMsgStr);
}
}
if(ok)
{
if(obj == NULL)
{
errNum = WLZ_ERR_OBJECT_NULL;
}
if(obj->type != WLZ_CONTOUR)
{
errNum = WLZ_ERR_OBJECT_TYPE;
}
else if(obj->domain.core == NULL)
{
errNum = WLZ_ERR_DOMAIN_NULL;
}
else
{
errNum = WlzGMFilterGeomLPLM(obj->domain.ctr->model, lambda, mu, nItr,
nonMan);
}
if(errNum != WLZ_ERR_NONE)
{
ok = 0;
(void )WlzStringFromErrorNum(errNum, &errMsgStr);
(void )fprintf(stderr,
"%s: Failed to filter the geometric model. (%s).\n",
argv[0],
errMsgStr);
}
}
if(ok)
{
if((fP = (strcmp(outObjFileStr, "-")?
fopen(outObjFileStr, "w"): stdout)) == NULL)
{
ok = 0;
(void )fprintf(stderr,
"%s: Failed to open output file %s.\n",
argv[0], outObjFileStr);
}
}
if(ok)
{
errNum = WlzWriteObj(fP, obj);
if(errNum != WLZ_ERR_NONE)
{
ok = 0;
(void )WlzStringFromErrorNum(errNum, &errMsgStr);
(void )fprintf(stderr,
"%s: Failed to write output object, %s.\n",
argv[0], errMsgStr);
}
}
(void )WlzFreeObj(obj);
if(usage)
{
(void )fprintf(stderr,
"Usage: %s [-h] [-o<output file>]\n"
" [-l#] [-m#] [-n#]\n"
" [-p#] [-s#] [-P#] [-S#] [<input file>]\n"
" -h Output this usage message.\n"
" -N Allow non manifild vertices to be filtered.\n"
" -o Output file name, default is the standard output.\n"
" -l Filter parameter lambda.\n"
" -m Filter parameter mu.\n"
" -n The number of itterations. If the number of itterations\n"
" is not given, then the pass and stop band ripple determine\n"
" the number of itterations.\n"
" -p The band pass frequency parameter (kPB).\n"
" -s The band stop frequency parameter (kSB).\n"
" -P The maximum pass band ripple (dPB).\n"
" -S The maximum stop band ripple (dSB).\n"
"For simple use to smooth a geometric model from a 2D or 3D contour\n"
"don't use lambda and mu. Instead use: Values of kPB in the range\n"
"[0.0100-0.1000], values of kSB in the range [1.000-1.9999]. The default\n"
"ripple values are probably acceptable for most simple filters.\n"
"Simple example, which filters a contour smoothing out voxel edges:\n"
" prompt%% WlzContourGeomFilter -o out.wlz -p 0.1 -s 1.5 -n 100 in.wlz\n"
"This example passes the geometric model from the contour object\n"
"in in.wlz through a low pass filter with a transition band starting\n"
"at 0.1 and ending with the stop band at 1.5. A maximum of 100\n"
"itterations are performed. If the output from the filter was not\n"
"sufficiently smooth then the ripple values could be decreased.\n"
"If you want to design a more complex filter or one that is not a\n"
"low pass (smoothing) filter then see either:\n"
" Gabriel Taubin. Curve and Surface Smoothing without Shrinkage.\n"
" International Conference on Computer Vision (ICCV'95) Conference\n"
" Procedings, 827-857, 1995.\n"
"or\n"
" Gabriel Taubin. A Signal Processing Approach to Fair Surface\n"
" Design. Computer Graphics, 29, 351-358, 1995.\n",
argv[0]);
(void )fprintf(stderr,
"The parameter values are:\n"
" %s kPB = %g\n"
" %s kSB = %g\n"
" %s dPB = %g\n"
" %s dSB = %g\n"
" %s lambda = %g\n"
" %s mu = %g\n"
" %s nItr = %d\n",
(flags & WLZWLZ_CTRFFLAGS_KPB)? setMsg: notSetMsg, kPB,
(flags & WLZWLZ_CTRFFLAGS_KSB)? setMsg: notSetMsg, kSB,
(flags & WLZWLZ_CTRFFLAGS_DPB)? setMsg: notSetMsg, dPB,
(flags & WLZWLZ_CTRFFLAGS_DSB)? setMsg: notSetMsg, dSB,
(flags & WLZWLZ_CTRFFLAGS_LAMBDA)? setMsg: notSetMsg, lambda,
(flags & WLZWLZ_CTRFFLAGS_MU)? setMsg: notSetMsg, mu,
(flags & WLZWLZ_CTRFFLAGS_NITR)? setMsg: notSetMsg, nItr);
}
return(!ok);
}
/*!
* \return Contour object.
* \ingroup LibWlzBnd
* \brief Extracts a smoothed iso-surface contour with iso-value 1.0
* from the given 3D domain object with values.
* \param inObj Given domain object.
* \param dstErr Destination error pointer, may be NULL.
*/
WlzObject *WlzGetContourObj(WlzObject *inObj, WlzErrorNum *dstErr)
{
int flip = 1,
nrm = 0,
nItr = 10,
nonMan = 0,
filterGeom = 1,
setbackVz = 0;
double lambda = 0,
mu = 0,
ctrVal = 100,
ctrWth = 1.0,
filterPB = 0.1,
filterSB = 1.1,
xsize = 1,
ysize = 1,
zsize = 1;
WlzDomain ctrDom;
WlzValues dumVal;
WlzContourMethod ctrMtd = WLZ_CONTOUR_MTD_BND;
const double filterDPB = 0.25,
filterDSB = 0.10;
WlzObject *outObj = NULL;
WlzErrorNum errNum = WLZ_ERR_NONE;
ctrDom.core = NULL;
dumVal.core = NULL;
if(inObj && (inObj->type == WLZ_3D_DOMAINOBJ) && (inObj->domain.core) &&
(inObj->domain.core->type == WLZ_2D_DOMAINOBJ))
{
xsize = inObj->domain.p->voxel_size[0];
ysize = inObj->domain.p->voxel_size[1];
zsize = inObj->domain.p->voxel_size[2];
inObj->domain.p->voxel_size[0] = 1.0;
inObj->domain.p->voxel_size[1] = 1.0;
inObj->domain.p->voxel_size[2] = 1.0;
}
else
{
errNum = WLZ_ERR_OBJECT_TYPE;
}
if(errNum == WLZ_ERR_NONE)
{
ctrDom.ctr = WlzContourObj(inObj, ctrMtd,ctrVal, ctrWth, nrm, &errNum);
if((errNum != WLZ_ERR_NONE) && filterGeom)
{
errNum = WlzGMFilterGeomLPParam(&lambda, &mu, &nItr,
filterPB, filterSB, filterDPB,
filterDSB);
if(errNum != WLZ_ERR_NONE)
{
errNum = WlzGMFilterGeomLPLM(ctrDom.ctr->model,
lambda, mu, nItr, nonMan);
if(errNum != WLZ_ERR_NONE)
{
outObj = WlzMakeMain(WLZ_CONTOUR, ctrDom,
dumVal, NULL, NULL, &errNum);
if(setbackVz)
{
inObj->domain.p->voxel_size[0] = xsize;
inObj->domain.p->voxel_size[1] = ysize;
inObj->domain.p->voxel_size[2] = zsize;
}
if((errNum != WLZ_ERR_NONE) &&
flip && ctrDom.core && ctrDom.ctr->model)
{
errNum = WlzGMFilterFlipOrient(ctrDom.ctr->model);
}
}
}
}
}
if(dstErr)
{
*dstErr = errNum;
}
return(outObj);
}
