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173 lines (157 loc) · 5.73 KB
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/* ______________________________________________________________________
*
* Christian Gaser, Robert Dahnke
* Structural Brain Mapping Group (https://neuro-jena.github.io)
* Departments of Neurology and Psychiatry
* Jena University Hospital
* ______________________________________________________________________
* $Id$
*
*/
/* This PVE calculation is a modified version from the PVE software bundle:
* Copyright (C) Jussi Tohka, Institute of Signal Processing,
* Tampere University of Technology, 2002 - 2004.
* P.O. Box 553, FIN-33101, Finland
* E-mail: jussi.tohka@tut.fi
*/
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include "Amap.h"
void Pve5(double *src, unsigned char *prob, unsigned char *label, double *mean, int *dims)
{
int z_area, y_dims, ind;
double w;
unsigned char new_val[MAX_NC];
int area = dims[0]*dims[1];
int vol = area*dims[2];
for (int z = 1; z < dims[2]-1; z++) {
z_area = z*area;
for (int y = 1; y < dims[1]-1; y++) {
y_dims = y*dims[0];
for (int x = 1; x < dims[0]-1; x++) {
ind = z_area + y_dims + x;
switch(label[ind]) {
case 0: /* BG */
new_val[CSFLABEL-1] = 0;
new_val[GMLABEL-1] = 0;
new_val[WMLABEL-1] = 0;
break;
case CSFLABEL: /* CSF */
new_val[CSFLABEL-1] = 255;
new_val[GMLABEL-1] = 0;
new_val[WMLABEL-1] = 0;
label[ind] = (unsigned char) ROUND(1.0*255.0/3.0);
break;
case GMLABEL: /* GM */
new_val[CSFLABEL-1] = 0;
new_val[GMLABEL-1] = 255;
new_val[WMLABEL-1] = 0;
label[ind] = (unsigned char) ROUND(2.0*255.0/3.0);
break;
case WMLABEL: /* WM */
new_val[CSFLABEL-1] = 0;
new_val[GMLABEL-1] = 0;
new_val[WMLABEL-1] = 255;
label[ind] = 255;
break;
case GMCSFLABEL: /* GMCSF */
w = (src[ind] - mean[CSFLABEL-1]) / ( mean[GMLABEL-1] - mean[CSFLABEL-1] );
if(w > 1.0) w = 1.0; if(w < 0.0) w = 0.0;
new_val[CSFLABEL-1] = (unsigned char) ROUND(255.0*(1-w));
new_val[GMLABEL-1] = (unsigned char) ROUND(255.0*w);
new_val[WMLABEL-1] = 0;
label[ind] = (unsigned char) ROUND(255.0/3.0*(1.0 + w));
break;
case WMGMLABEL: /* WMGM */
w = (src[ind] - mean[GMLABEL-1])/(mean[WMLABEL-1]-mean[GMLABEL-1]);
if(w > 1.0) w = 1.0; if(w < 0.0) w = 0.0;
new_val[CSFLABEL-1] = 0;
new_val[GMLABEL-1] = (unsigned char) ROUND(255.0*(1-w));
new_val[WMLABEL-1] = (unsigned char) ROUND(255.0*w);
label[ind] = (unsigned char) ROUND(255.0/3.0*(2.0 + w));
break;
}
prob[ ind] = new_val[CSFLABEL-1];
prob[vol + ind] = new_val[GMLABEL-1];
prob[(2*vol) + ind] = new_val[WMLABEL-1];
/* set old probabilities for mixed classes to zero */
prob[(3*vol) + ind] = 0;
prob[(4*vol) + ind] = 0;
}
}
}
}
void Pve6(double *src, unsigned char *prob, unsigned char *label, double *mean, int *dims)
{
int z_area,y_dims,ind;
double w;
unsigned char new_val[MAX_NC];
int area = dims[0]*dims[1];
int vol = area*dims[2];
for (int z = 1; z < dims[2]-1; z++) {
z_area = z*area;
for (int y = 1; y < dims[1]-1; y++) {
y_dims = y*dims[0];
for (int x = 1; x < dims[0]-1; x++) {
ind = z_area + y_dims + x;
switch(label[ind]) {
case 0: /* BG */
new_val[CSFLABEL] = 0;
new_val[GMLABEL] = 0;
new_val[WMLABEL] = 0;
break;
case CSFLABEL+1: /* CSF */
new_val[CSFLABEL] = 255;
new_val[GMLABEL] = 0;
new_val[WMLABEL] = 0;
label[ind] = (unsigned char) ROUND(1.0*255.0/3.0);
break;
case GMLABEL+1: /* GM */
new_val[CSFLABEL] = 0;
new_val[GMLABEL] = 255;
new_val[WMLABEL] = 0;
label[ind] = (unsigned char) ROUND(2.0*255.0/3.0);
break;
case WMLABEL+1: /* WM */
new_val[CSFLABEL] = 0;
new_val[GMLABEL] = 0;
new_val[WMLABEL] = 255;
label[ind] = 255;
break;
case BKGCSFLABEL+1: /* BKGCSF */
w = src[ind]/mean[CSFLABEL];
if(w > 1.0) w = 1.0; if(w < 0.0) w = 0.0;
new_val[CSFLABEL] = (unsigned char) ROUND(255.0*w);
new_val[GMLABEL] = 0;
new_val[WMLABEL] = 0;
label[ind] = ROUND(255.0/3.0*w);
break;
case GMCSFLABEL+1: /* GMCSF */
w = (src[ind] - mean[CSFLABEL])/(mean[GMLABEL]-mean[CSFLABEL]);
if(w > 1.0) w = 1.0; if(w < 0.0) w = 0.0;
new_val[CSFLABEL] = (unsigned char) ROUND(255.0*(1-w));
new_val[GMLABEL] = (unsigned char) ROUND(255.0*w);
new_val[WMLABEL] = 0;
label[ind] = (unsigned char) ROUND(255.0/3.0*(1.0 + w));
break;
case WMGMLABEL+1: /* WMGM */
w = (src[ind] - mean[GMLABEL])/(mean[WMLABEL]-mean[GMLABEL]);
if(w > 1.0) w = 1.0; if(w < 0.0) w = 0.0;
new_val[CSFLABEL] = 0;
new_val[GMLABEL] = (unsigned char) ROUND(255.0*(1-w));
new_val[WMLABEL] = (unsigned char) ROUND(255.0*w);
label[ind] = (unsigned char) ROUND(255.0/3.0*(2.0 + w));
break;
}
prob[ ind] = new_val[CSFLABEL];
prob[vol + ind] = new_val[GMLABEL];
prob[(2*vol) + ind] = new_val[WMLABEL];
/* set old probabilities for mixed classes to zero */
prob[(3*vol) + ind] = 0;
prob[(4*vol) + ind] = 0;
prob[(5*vol) + ind] = 0;
}
}
}
}