/**
*
* Function to normalize the images between 0 and 255
*
**/
void image_normalization(
const float *I0, // input image0
const float *I1, // input image1
float *I0n, // normalized output image0
float *I1n, // normalized output image1
int size // size of the image
)
{
float max0, max1, min0, min1;
// obtain the max and min of each image
getminmax(&min0, &max0, I0, size);
getminmax(&min1, &max1, I1, size);
// obtain the max and min of both images
const float max = (max0 > max1)? max0 : max1;
const float min = (min0 < min1)? min0 : min1;
const float den = max - min;
if (den > 0)
// normalize both images
for (int i = 0; i < size; i++)
{
I0n[i] = 255.0 * (I0[i] - min) / den;
I1n[i] = 255.0 * (I1[i] - min) / den;
}
else
// copy the original images
for (int i = 0; i < size; i++)
{
I0n[i] = I0[i];
I1n[i] = I1[i];
}
}
float minmaxrefine(tf * f, defs * d, float ax, float halfmaxdist)
{
float min, max;
float *data;
float start, end;
float step;
float w;
int Nstart, Nend;
int current, status;
float pos;
if (d->filter == 1) {
if (f->current->dataf == NULL)
return ax;
data = f->current->dataf;
} else {
data = f->current->data;
}
status = 0;
step = (halfmaxdist / 50.0);
while (step < f->current->head->delta)
step += (halfmaxdist / 50.0);
w = step;
while (status == 0 && w < halfmaxdist) {
start = ax - w;
end = ax + w;
current = hdu_getNptsFromSeconds(f->current->head, ax);
Nstart = hdu_getNptsFromSeconds(f->current->head, start);
Nend = hdu_getNptsFromSeconds(f->current->head, end);
if (hdu_checkNPTS(f->current->head, current))
return ax;
if (hdu_checkNPTS(f->current->head, Nstart))
return ax;
if (hdu_checkNPTS(f->current->head, Nend))
return ax;
if (Nend <= Nstart)
return ax;
if ((data[Nstart] < data[current]) && (data[Nend] < data[current]))
status = 1; /* MAX */
else if ((data[Nstart] > data[current])
&& (data[Nend] > data[current]))
status = 2; /* MIN */
else {
w += step;
}
}
getminmax(data, f->current->head, start, end, &min, &max);
if (status == 1)
pos = max;
else if (status == 2)
pos = min;
else
pos = ax;
// fprintf(stderr,"%f %f\n",ax,pos);
return pos;
}
int main(int argc, char* argv[])
{
bool transp, start, scalebar, nomin=true, nomax=true, barreverse, framenum;
int n1, n2, n3, i1, i2, i3, len, nreserve;
float min1, max1, min2, max2, o3, d3, o1, d1, xi, yi, tt;
float **x, **y, **tmp, *symbolsz=NULL, symsize, xc, yc;
float ***data=NULL, barmin, barmax, minmax[2];
char *symbol, sym[2]=" ", *color=NULL, *barfile;
unsigned char **z=NULL, *barbuf[1];
sf_datatype type;
sf_file in, depth, bar=NULL;
sf_init(argc,argv);
in = sf_input("in");
vp_init();
if (NULL != sf_getstring("depth")) {
depth = sf_input("depth"); /* values for colored plots */
if (SF_UCHAR != sf_gettype(depth))
sf_error("Need uchar in depth");
} else {
depth = NULL;
}
if (!sf_histint(in,"n1",&n1)) sf_error("No n1= in input");
if (!sf_histint(in,"n2",&n2)) n2=1;
n = n1*n2;
n3 = sf_leftsize(in,2);
if (n3 > 1) {
if (!sf_histfloat(in,"o3",&o3)) o3=0.;
if (!sf_histfloat(in,"d3",&d3)) d3=1.;
}
x = sf_floatalloc2(n1,n2);
y = sf_floatalloc2(n1,n2);
t = sf_floatalloc(n);
if (!sf_getbool("scalebar",&scalebar)) scalebar=false;
/* if y, draw scalebar */
if (!sf_getbool("wantframenum",&framenum)) framenum = (bool) (n3 > 1);
/* if y, display third axis position in the corner */
if (NULL != depth) {
z = sf_ucharalloc2(n1,n2);
/* initialize color table */
if (NULL == (color = sf_getstring("color"))) color="j";
/* color scheme (default is j) */
if (!sf_getint ("nreserve",&nreserve)) nreserve = 8;
/* reserved colors */
vp_rascoltab(nreserve,color);
if (scalebar) {
barfile = sf_getstring("bar");
/* file for scalebar data */
if (NULL == barfile) {
barfile=sf_histstring(depth,"bar");
if (NULL == barfile) sf_error("Need bar=");
}
nomin = (bool) (!sf_getfloat("minval",&barmin));
/* minimum value for scalebar (default is the data minimum) */
nomax = (bool) (!sf_getfloat("maxval",&barmax));
/* maximum value for scalebar (default is the data maximum) */
bar = sf_input(barfile);
if (SF_UCHAR != sf_gettype(bar)) sf_error("Need uchar in bar");
if (nomin) nomin = (bool) (!sf_histfloat(bar,"minval",&barmin));
if (nomax) nomax = (bool) (!sf_histfloat(bar,"maxval",&barmax));
barbuf[0] = (unsigned char*) sf_alloc(VP_BSIZE,sizeof(unsigned char));
if (!sf_getbool("barreverse",&barreverse)) barreverse=false;
/* if y, go from small to large on the bar scale */
}
}
if (!sf_getfloat("pclip",&pclip)) pclip=100.; /* clip percentile */
type = sf_gettype(in);
switch (type) {
case SF_FLOAT:
if (!sf_histfloat(in,"o1",&o1)) o1=0.;
if (!sf_histfloat(in,"d1",&d1)) d1=1.;
for (i2=0; i2 < n2; i2++) {
for (i1=0; i1 < n1; i1++) {
x[i2][i1] = o1 + i1*d1;
}
}
break;
case SF_COMPLEX:
data = sf_floatalloc3(2,n1,n2);
break;
default:
sf_error("Wrong data type (need float or complex)");
}
vp_plot_init(n2);
symbol = sf_getstring("symbol");
/* if set, plot with symbols instead of lines */
if (NULL != symbol) {
len = strlen(symbol);
if (len < n2) {
symbol = (char*) sf_realloc(symbol,n2,sizeof(char));
for (i2=len; i2 < n2; i2++) {
symbol[i2] = symbol[i2 % len];
}
}
symbolsz = sf_floatalloc(n2);
if (!sf_getfloats("symbolsz",symbolsz,n2)) {
/* symbol size (default is 2) */
for (i2 = 0; i2 < n2; i2++)
symbolsz[i2] = 2./33.;
} else {
for (i2 = 0; i2 < n2; i2++)
symbolsz[i2] /= 33.;
}
}
if (!sf_getbool ("transp",&transp)) transp=false;
/* if y, transpose the axes */
for (i3 = 0; i3 < n3; i3++) {
if (SF_COMPLEX == type) {
sf_floatread(data[0][0],2*n,in);
for (i2=0; i2 < n2; i2++) {
for (i1=0; i1 < n1; i1++) {
x[i2][i1] = data[i2][i1][0];
y[i2][i1] = data[i2][i1][1];
}
}
getminmax(x[0],&min1,&max1);
} else {
sf_floatread(y[0],n,in);
min1=o1;
max1=o1+(n1-1)*d1;
}
getminmax(y[0],&min2,&max2);
if (NULL != depth) sf_ucharread(z[0],n,depth);
vp_stdplot_init (min1, max1, min2, max2,
transp,false,false,true);
vp_frame_init(in,"blt",false);
if (transp) {
tmp=x; x=y; y=tmp;
tt=max1; max1=max2; max2=tt;
tt=min1; min1=min2; min2=tt;
}
if (i3 > 0) vp_erase();
if (framenum) vp_framenum(o3+i3*d3);
vp_frame();
for (i2=0; i2 < n2; i2++) {
vp_plot_set (i2);
symsize = 2./33.;
if (NULL != symbol) {
sym[0] = symbol[i2];
symsize = symbolsz[i2];
}
start = true;
for (i1=0; i1 < n1; i1++) {
xi = x[i2][i1];
yi = y[i2][i1];
if (NULL != depth) vp_color(z[i2][i1]+256);
if (isfinite(xi) &&
isfinite(yi)) {
if (NULL != symbol) {
vp_umove(xi,yi);
vp_where (&xc, &yc);
vp_tjust (TH_SYMBOL, TV_SYMBOL);
vp_gtext (xc,yc,symsize,0.,0.,symsize,sym);
} else if (start) {
vp_umove(xi,yi);
start=false;
} else {
vp_udraw(xi,yi);
}
} else {
start=true;
}
}
}
if (depth && scalebar) {
sf_floatread(minmax,2,bar);
sf_ucharread(barbuf[0],VP_BSIZE,bar);
if (nomin) barmin=minmax[0];
if (nomax) barmax=minmax[1];
if (barreverse) {
vp_barframe_init (depth,barmax,barmin);
} else {
vp_barframe_init (depth,barmin,barmax);
}
vp_barraster(VP_BSIZE, barbuf);
}
if (transp) {
tmp=x; x=y; y=tmp;
tt=max1; max1=max2; max2=tt;
tt=min1; min1=min2; min2=tt;
}
}
exit(0);
}
