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aptdec
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indent code

tags/v1.6
Thierry Leconte 21 years ago
parent
6bfc0471fb
commit
bae5205370
5 changed files with 636 additions and 644 deletions
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  1. +2
    -1
      Makefile
  2. +195
    -207
      dsp.c
  3. +61
    -73
      filter.c
  4. +241
    -209
      image.c
  5. +137
    -154
      reg.c

+ 2
- 1
Makefile View File

@@ -3,7 +3,7 @@ INCLUDES=-I.


CFLAGS= -O3 $(INCLUDES) CFLAGS= -O3 $(INCLUDES)


OBJS= main.o image.o dsp.o filter.o reg.o fcolor.o
OBJS= main.o image.o dsp.o filter.o reg.o fcolor.o dres.o


atpdec: $(OBJS) atpdec: $(OBJS)
$(CC) -o $@ $(OBJS) -lm -lsndfile -lpng $(CC) -o $@ $(OBJS) -lm -lsndfile -lpng
@@ -13,6 +13,7 @@ dsp.o: dsp.c filtercoeff.h filter.h
filter.o: filter.c filter.h filter.o: filter.c filter.h
image.o: image.c satcal.h image.o: image.c satcal.h
fcolor.o : fcolor.c fcolor.o : fcolor.c
dres.o : dres.c


clean: clean:
rm -f *.o atpdec rm -f *.o atpdec

+ 195
- 207
dsp.c View File

@@ -1,207 +1,195 @@
/*
* Atpdec
* Copyright (c) 2003 by Thierry Leconte (F4DWV)
*
* $Id$
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <math.h>
#ifndef M_PI
#define M_PI 3.14159265358979323846 /* for OS that don't know it */
#endif
#include "filter.h"
#include "filtercoeff.h"
#define Fe 11025.0
#define Fc 2400.0
#define DFc 50.0
#define PixelLine 2080
#define Fp (2*PixelLine)
#define RSMULT 10
#define Fi (Fp*RSMULT)
static double FreqOsc=Fc/Fe;
static double FreqLine=1.0;
extern int getsample(float *inbuff ,int nb);
static float pll(float In)
{
/* pll coeff */
#define K1 5e-3
#define K2 3e-6
static double PhaseOsc=0.0;
static iirbuff_t Ifilterbuff,Qfilterbuff;
double Io,Qo;
double Ip,Qp;
double DPhi;
double DF;
/* quadrature oscillator */
Io=cos(PhaseOsc); Qo=sin(PhaseOsc);
/* phase detector */
Ip=iir(In*Io,&Ifilterbuff,&PhaseFilterCf);
Qp=iir(In*Qo,&Qfilterbuff,&PhaseFilterCf);
DPhi=-atan2(Qp,Ip)/M_PI;
/* loop filter */
DF=K1*DPhi+FreqOsc;
FreqOsc+=K2*DPhi;
if(FreqOsc>((Fc+DFc)/Fe)) FreqOsc=(Fc+DFc)/Fe;
if(FreqOsc<((Fc-DFc)/Fe)) FreqOsc=(Fc-DFc)/Fe;
PhaseOsc+=2.0*M_PI*DF;
if (PhaseOsc > M_PI) PhaseOsc-=2.0*M_PI;
if (PhaseOsc <= -M_PI) PhaseOsc+=2.0*M_PI;
return (float)(In*Io);
}
static double fr=Fc/Fe;
static double offset=0.0;
getamp(float *ambuff,int nb)
{
#define BLKIN 1024
float inbuff[BLKIN];
int n;
int res;
res=getsample(inbuff,nb>BLKIN?BLKIN:nb);
for(n=0;n<res;n++) {
ambuff[n]=pll(inbuff[n]);
fr=0.25*FreqOsc+0.75*fr;
}
return(res);
}
int getpixelv(float *pvbuff,int nb)
{
#define BLKAMP 256
static float ambuff[BLKAMP];
static int nam=0;
static int idxam=0;
int n;
for(n=0;n<nb;n++) {
double mult;
int shift;
if(nam<BLKAMP) {
int res;
memmove(ambuff,&(ambuff[idxam]),nam*sizeof(float));
idxam=0;
res=getamp(&(ambuff[nam]),BLKAMP-nam);
nam+=res;
if(nam<BLKAMP) return(n);
}
mult=(double)Fi*fr/Fc*FreqLine;
pvbuff[n]=rsfir(&(ambuff[idxam]),rsfilter,RSFilterLen,offset,mult)*mult*2*256.0;
shift=(int)((RSMULT-offset+mult-1)/mult);
offset=shift*mult+offset-RSMULT;
idxam+=shift;nam-=shift;
}
return(nb);
}
int getpixelrow(float *pixelv)
{
static float pixels[PixelLine+SyncFilterLen];
static int npv=0;
static int synced=0;
static double max=0.0;
double corr,ecorr,lcorr;
double ph;
int n,res;
if(npv>0)
memmove(pixelv,pixels,npv*sizeof(float));
if(npv<SyncFilterLen+2) {
res=getpixelv(&(pixelv[npv]),SyncFilterLen+2-npv);
npv+=res;
if(npv<SyncFilterLen+2)
return(0);
}
/* test sync */
corr=fir(&(pixelv[1]),Sync,SyncFilterLen);
ecorr=fir(pixelv,Sync,SyncFilterLen);
lcorr=fir(&(pixelv[2]),Sync,SyncFilterLen);
FreqLine=1.0+(ecorr-lcorr)/corr/PixelLine/4.0;
if(corr < 0.75*max) {
synced=0;
FreqLine=1.0;
}
max=corr;
if(synced<8) {
int shift,mshift;
if(npv<PixelLine+SyncFilterLen) {
res=getpixelv(&(pixelv[npv]),PixelLine+SyncFilterLen-npv);
npv+=res;
if(npv<PixelLine+SyncFilterLen)
return(0);
}
/* lookup sync start */
mshift=0;
for(shift=1;shift<PixelLine;shift++) {
double corr;
corr=fir(&(pixelv[shift+1]),Sync,SyncFilterLen);
if(corr>max) {
mshift=shift;
max=corr;
}
}
if(mshift !=0) {
memmove(pixelv,&(pixelv[mshift]),(npv-mshift)*sizeof(float));
npv-=mshift;
synced=0;
FreqLine=1.0;
} else
synced+=1;
}
if(npv<PixelLine) {
res=getpixelv(&(pixelv[npv]),PixelLine-npv);
npv+=res;
if(npv<PixelLine) return(0);
}
if(npv==PixelLine) {
npv=0;
} else {
memmove(pixels,&(pixelv[PixelLine]),(npv-PixelLine)*sizeof(float));
npv-=PixelLine;
}
return (1);
}
/*
* Atpdec
* Copyright (c) 2003 by Thierry Leconte (F4DWV)
*
* $Id$
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <math.h>
#ifndef M_PI
#define M_PI 3.14159265358979323846 /* for OS that don't know it */
#endif /* */
#include "filter.h"
#include "filtercoeff.h"
#define Fe 11025.0
#define Fc 2400.0
#define DFc 50.0
#define PixelLine 2080
#define Fp (2*PixelLine)
#define RSMULT 10
#define Fi (Fp*RSMULT)
static double FreqOsc = Fc / Fe;
static double FreqLine = 1.0;
extern int getsample (float *inbuff, int nb);
static float
pll (float In)
{
/* pll coeff */
#define K1 5e-3
#define K2 3e-6
static double PhaseOsc = 0.0;
static iirbuff_t Ifilterbuff, Qfilterbuff;
double Io, Qo;
double Ip, Qp;
double DPhi;
double DF;
/* quadrature oscillator */
Io = cos (PhaseOsc);
Qo = sin (PhaseOsc);
/* phase detector */
Ip = iir (In * Io, &Ifilterbuff, &PhaseFilterCf);
Qp = iir (In * Qo, &Qfilterbuff, &PhaseFilterCf);
DPhi = -atan2 (Qp, Ip) / M_PI;
/* loop filter */
DF = K1 * DPhi + FreqOsc;
FreqOsc += K2 * DPhi;
if (FreqOsc > ((Fc + DFc) / Fe))
FreqOsc = (Fc + DFc) / Fe;
if (FreqOsc < ((Fc - DFc) / Fe))
FreqOsc = (Fc - DFc) / Fe;
PhaseOsc += 2.0 * M_PI * DF;
if (PhaseOsc > M_PI)
PhaseOsc -= 2.0 * M_PI;
if (PhaseOsc <= -M_PI)
PhaseOsc += 2.0 * M_PI;
return (float) (In * Io);
} static double fr = Fc / Fe;
static double offset = 0.0;
getamp (float *ambuff, int nb)
{
#define BLKIN 1024
float inbuff[BLKIN];
int n;
int res;
res = getsample (inbuff, nb > BLKIN ? BLKIN : nb);
for (n = 0; n < res; n++) {
ambuff[n] = pll (inbuff[n]);
fr = 0.25 * FreqOsc + 0.75 * fr;
}
return (res);
}
int
getpixelv (float *pvbuff, int nb)
{
#define BLKAMP 256
static float ambuff[BLKAMP];
static int nam = 0;
static int idxam = 0;
int n;
for (n = 0; n < nb; n++) {
double mult;
int shift;
if (nam < BLKAMP) {
int res;
memmove (ambuff, &(ambuff[idxam]), nam * sizeof (float));
idxam = 0;
res = getamp (&(ambuff[nam]), BLKAMP - nam);
nam += res;
if (nam < BLKAMP)
return (n);
}
mult = (double) Fi *fr / Fc * FreqLine;
pvbuff[n] =
rsfir (&(ambuff[idxam]), rsfilter, RSFilterLen, offset,
mult) * mult * 2 * 256.0;
shift = (int) ((RSMULT - offset + mult - 1) / mult);
offset = shift * mult + offset - RSMULT;
idxam += shift;
nam -= shift;
} return (nb);
}
int
getpixelrow (float *pixelv)
{
static float pixels[PixelLine + SyncFilterLen];
static int npv = 0;
static int synced = 0;
static double max = 0.0;
double corr, ecorr, lcorr;
double ph;
int n, res;
if (npv > 0)
memmove (pixelv, pixels, npv * sizeof (float));
if (npv < SyncFilterLen + 2) {
res = getpixelv (&(pixelv[npv]), SyncFilterLen + 2 - npv);
npv += res;
if (npv < SyncFilterLen + 2)
return (0);
}
/* test sync */
corr = fir (&(pixelv[1]), Sync, SyncFilterLen);
ecorr = fir (pixelv, Sync, SyncFilterLen);
lcorr = fir (&(pixelv[2]), Sync, SyncFilterLen);
FreqLine = 1.0 + (ecorr - lcorr) / corr / PixelLine / 4.0;
if (corr < 0.75 * max) {
synced = 0;
FreqLine = 1.0;
}
max = corr;
if (synced < 8) {
int shift, mshift;
if (npv < PixelLine + SyncFilterLen) {
res = getpixelv (&(pixelv[npv]), PixelLine + SyncFilterLen - npv);
npv += res;
if (npv < PixelLine + SyncFilterLen)
return (0);
}
/* lookup sync start */
mshift = 0;
for (shift = 1; shift < PixelLine; shift++) {
double corr;
corr = fir (&(pixelv[shift + 1]), Sync, SyncFilterLen);
if (corr > max) {
mshift = shift;
max = corr;
}
}
if (mshift != 0) {
memmove (pixelv, &(pixelv[mshift]), (npv - mshift) * sizeof (float));
npv -= mshift;
synced = 0;
FreqLine = 1.0;
}
else
synced += 1;
}
if (npv < PixelLine) {
res = getpixelv (&(pixelv[npv]), PixelLine - npv);
npv += res;
if (npv < PixelLine)
return (0);
}
if (npv == PixelLine) {
npv = 0;
}
else {
memmove (pixels, &(pixelv[PixelLine]),
(npv - PixelLine) * sizeof (float));
npv -= PixelLine;
} return (1);
}



+ 61
- 73
filter.c View File

@@ -18,77 +18,65 @@
* License along with this library; if not, write to the Free Software * License along with this library; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
* *
*/
*/
#include "filter.h" #include "filter.h"
float fir( float *buff, const float *coeff, const int len)
{
int i;
double r;
r=0.0;
for(i=0;i<len;i++) {
r+=buff[i]*coeff[i];
}
return r;
}
void iqfir( float *buff, const float *Icoeff, const float *Qcoeff, const int len, float *Iptr,float *Qptr)
{
int i;
float I,Q;
I=Q=0.0;
for(i=0;i<len;i++) {
double v;
v=buff[i];
I+=v*Icoeff[i];
Q+=v*Qcoeff[i];
}
*Iptr=I;
*Qptr=Q;
}
float rsfir(float *buff,const float *coeff,const int len , const double offset , const double delta)
{
int i;
double n;
double out;
out=0.0;
for(i=0,n=offset;n<len-1;n+=delta,i++) {
int k;
double alpha;
k=(int)n;
alpha=n-k;
out+=buff[i]*(coeff[k]*(1.0-alpha)+coeff[k+1]*alpha);
}
return out;
}
double iir(double x,iirbuff_t *buff,const iircoeff_t *coeff)
{
buff->x[4]=buff->x[3];
buff->x[3]=buff->x[2];
buff->x[2]=buff->x[1];
buff->x[1]=buff->x[0];
buff->x[0]=x/coeff->G;
buff->y[2]=buff->y[1];
buff->y[1]=buff->y[0];
buff->y[0] = buff->x[4]
+ coeff->x[2] * buff->x[3]
+ coeff->x[1] * buff->x[2]
+ coeff->x[0] * buff->x[1]
+ buff->x[0]
+ coeff->y[1] * buff->y[2]
+ coeff->y[0] * buff->y[1];
return (buff->y[0]);
}
float
fir (float *buff, const float *coeff, const int len)
{
int i;
double r;
r = 0.0;
for (i = 0; i < len; i++) {
r += buff[i] * coeff[i];
}
return r;
}
void
iqfir (float *buff, const float *Icoeff, const float *Qcoeff, const int len,
float *Iptr, float *Qptr)
{
int i;
float I, Q;
I = Q = 0.0;
for (i = 0; i < len; i++) {
double v;
v = buff[i];
I += v * Icoeff[i];
Q += v * Qcoeff[i];
} *Iptr = I;
*Qptr = Q;
} float
rsfir (float *buff, const float *coeff, const int len, const double offset,
const double delta)
{
int i;
double n;
double out;
out = 0.0;
for (i = 0, n = offset; n < len - 1; n += delta, i++) {
int k;
double alpha;
k = (int) n;
alpha = n - k;
out += buff[i] * (coeff[k] * (1.0 - alpha) + coeff[k + 1] * alpha);
} return out;
}
double
iir (double x, iirbuff_t * buff, const iircoeff_t * coeff)
{
buff->x[4] = buff->x[3];
buff->x[3] = buff->x[2];
buff->x[2] = buff->x[1];
buff->x[1] = buff->x[0];
buff->x[0] = x / coeff->G;
buff->y[2] = buff->y[1];
buff->y[1] = buff->y[0];
buff->y[0] = buff->x[4]
+coeff->x[2] * buff->x[3]
+coeff->x[1] * buff->x[2]
+coeff->x[0] * buff->x[1]
+buff->x[0] +coeff->y[1] * buff->y[2] +coeff->y[0] * buff->y[1];
return (buff->y[0]);
}


+ 241
- 209
image.c View File

@@ -26,29 +26,34 @@
#include <math.h> #include <math.h>


#define REGORDER 3 #define REGORDER 3
typedef struct {
double cf[REGORDER+1] ;
typedef struct
{
double cf[REGORDER + 1];
} rgparam; } rgparam;


static void rgcomp(double x[16], rgparam *rgpr)
static void
rgcomp (double x[16], rgparam * rgpr)
{ {
/*{ 0.106,0.215,0.324,0.433,0.542,0.652,0.78,0.87 ,0.0 }; */ /*{ 0.106,0.215,0.324,0.433,0.542,0.652,0.78,0.87 ,0.0 }; */
const double y[9] = { 31.07,63.02,94.96,126.9,158.86,191.1,228.62,255.0, 0.0 };
extern void polyreg(const int m,const int n,const double x[],const double y[],double c[]);
const double y[9] =
{ 31.07, 63.02, 94.96, 126.9, 158.86, 191.1, 228.62, 255.0, 0.0 };
extern void polyreg (const int m, const int n, const double x[],
const double y[], double c[]);


polyreg(REGORDER,9,x,y,rgpr->cf);
polyreg (REGORDER, 9, x, y, rgpr->cf);
} }


static double rgcal(float x,rgparam *rgpr)
static double
rgcal (float x, rgparam * rgpr)
{ {
double y,p;
int i;
for(i=0,y=0.0,p=1.0;i<REGORDER+1;i++) {
y+=rgpr->cf[i]*p;
p=p*x;
}
return(y);
double y, p;
int i;
for (i = 0, y = 0.0, p = 1.0; i < REGORDER + 1; i++) {
y += rgpr->cf[i] * p;
p = p * x;
}
return (y);
} }




@@ -56,245 +61,272 @@ static double tele[16];
static double Cs; static double Cs;
static nbtele; static nbtele;


int Calibrate(float **prow,int nrow,int offset)
int
Calibrate (float **prow, int nrow, int offset)
{ {


double teleline[3000];
double wedge[16];
rgparam regr[30];
int n;
int k;
int mtelestart,telestart;
int channel=-1;
float max;
double teleline[3000];
double wedge[16];
rgparam regr[30];
int n;
int k;
int mtelestart, telestart;
int channel = -1;
float max;


printf("Calibration ");
fflush(stdout);
printf ("Calibration ");
fflush (stdout);


/* build telemetry values lines */ /* build telemetry values lines */
for(n=0;n<nrow;n++) {
int i;
for (n = 0; n < nrow; n++) {
int i;


teleline[n]=0.0;
for(i=3;i<43;i++) {
teleline[n]+=prow[n][i+offset+956];
}
teleline[n]/=40.0;
}
teleline[n] = 0.0;
for (i = 3; i < 43; i++) {
teleline[n] += prow[n][i + offset + 956];
}
teleline[n] /= 40.0;
}


if(nrow<192) {
fprintf(stderr," impossible, not enought row\n");
return (0);
}
if (nrow < 192) {
fprintf (stderr, " impossible, not enought row\n");
return (0);
}


/* find telemetry start in the 2nd third */ /* find telemetry start in the 2nd third */
max=0.0;mtelestart=0;
for(n=nrow/3-64;n<2*nrow/3-64;n++) {
float df;
max = 0.0;
mtelestart = 0;
for (n = nrow / 3 - 64; n < 2 * nrow / 3 - 64; n++) {
float df;

df =
(teleline[n - 4] + teleline[n - 3] + teleline[n - 2] +
teleline[n - 1]) / (teleline[n] + teleline[n + 1] + teleline[n + 2] +
teleline[n + 3]);
if (df > max) {
mtelestart = n;
max = df;
}
}

mtelestart -= 64;
telestart = mtelestart % 128;

if (mtelestart < 0 || nrow < telestart + 128) {
fprintf (stderr, " impossible, not enought row\n");
return (0);
}


df=(teleline[n-4]+teleline[n-3]+teleline[n-2]+teleline[n-1])/(teleline[n]+teleline[n+1]+teleline[n+2]+teleline[n+3]);
if(df> max){ mtelestart=n; max=df; }
}
/* compute wedges and regression */
for (n = telestart, k = 0; n < nrow - 128; n += 128, k++) {
int j;


mtelestart-=64;
telestart=mtelestart%128;
for (j = 0; j < 16; j++) {
int i;


if(mtelestart <0 || nrow<telestart+128) {
fprintf(stderr," impossible, not enought row\n");
return (0);
}
wedge[j] = 0.0;
for (i = 1; i < 7; i++)
wedge[j] += teleline[n + j * 8 + i];
wedge[j] /= 6;
}


/* compute wedges and regression */
for(n=telestart,k=0;n<nrow-128;n+=128,k++) {
int j;
rgcomp (wedge, &(regr[k]));

if (k == nrow / 256) {
int i, l;

/* telemetry calibration */
for (j = 0; j < 16; j++) {
tele[j] = rgcal (wedge[j], &(regr[k]));
}


for(j=0;j<16;j++) {
int i;


wedge[j]=0.0;
for(i=1;i<7;i++)
wedge[j]+=teleline[n+j*8+i];
wedge[j]/=6;
}


rgcomp(wedge,&(regr[k]));

if (k==nrow/256) {
int i,l;

/* telemetry calibration */
for(j=0;j<16;j++) {
tele[j]=rgcal(wedge[j],&(regr[k]));
}

/* channel ID */
for(j=0,max=10000.0,channel=-1;j<6;j++) {
float df;
df=wedge[15]-wedge[j]; df=df*df;
if (df<max) { channel=j; max=df; }
}

/* Cs computation */
for(Cs=0.0,i=0,j=n;j<n+128;j++) {
double csline;

for(csline=0.0,l=3;l<43;l++)
csline+=prow[n][l+offset];
csline/=40.0;
if(csline>50.0) {
Cs+=csline;
i++;
}
}
Cs/=i;
Cs=rgcal(Cs,&(regr[k]));
/* channel ID */
for (j = 0, max = 10000.0, channel = -1; j < 6; j++) {
float df;
df = wedge[15] - wedge[j];
df = df * df;
if (df < max) {
channel = j;
max = df;
} }
}
nbtele=k;
}

/* Cs computation */
for (Cs = 0.0, i = 0, j = n; j < n + 128; j++) {
double csline;

for (csline = 0.0, l = 3; l < 43; l++)
csline += prow[n][l + offset];
csline /= 40.0;
if (csline > 50.0) {
Cs += csline;
i++;
}
}
Cs /= i;
Cs = rgcal (Cs, &(regr[k]));
}
}
nbtele = k;


/* calibrate */ /* calibrate */
for(n=0;n<nrow;n++) {
float *pixelv;
int i,c;

pixelv=prow[n];
for(i=0;i<1001;i++) {
float pv;
int k,kof;

pv=pixelv[i+offset];

k=(n-telestart)/128;
if(k>=nbtele) k=nbtele-1;
kof=(n-telestart)%128;
if(kof<64) {
if(k<1) {
pv=rgcal(pv,&(regr[k]));
} else {
pv=rgcal(pv,&(regr[k]))*(64+kof)/128.0+
rgcal(pv,&(regr[k-1]))*(64-kof)/128.0;
}
} else {
if((k+1)>=nbtele) {
pv=rgcal(pv,&(regr[k]));
} else {
pv=rgcal(pv,&(regr[k]))*(192-kof)/128.0+
rgcal(pv,&(regr[k+1]))*(kof-64)/128.0;
}
}

if(pv>255.0) pv=255.0;
if(pv<0.0) pv=0.0;
pixelv[i+offset]=pv;
for (n = 0; n < nrow; n++) {
float *pixelv;
int i, c;

pixelv = prow[n];
for (i = 0; i < 1001; i++) {
float pv;
int k, kof;

pv = pixelv[i + offset];

k = (n - telestart) / 128;
if (k >= nbtele)
k = nbtele - 1;
kof = (n - telestart) % 128;
if (kof < 64) {
if (k < 1) {
pv = rgcal (pv, &(regr[k]));
} }
}
printf("Done\n");
return(channel);
else {
pv = rgcal (pv, &(regr[k])) * (64 + kof) / 128.0 +
rgcal (pv, &(regr[k - 1])) * (64 - kof) / 128.0;
}
}
else {
if ((k + 1) >= nbtele) {
pv = rgcal (pv, &(regr[k]));
}
else {
pv = rgcal (pv, &(regr[k])) * (192 - kof) / 128.0 +
rgcal (pv, &(regr[k + 1])) * (kof - 64) / 128.0;
}
}

if (pv > 255.0)
pv = 255.0;
if (pv < 0.0)
pv = 0.0;
pixelv[i + offset] = pv;
}
}
printf ("Done\n");
return (channel);
} }


/* ------------------------------temperature calibration -----------------------*/ /* ------------------------------temperature calibration -----------------------*/
extern int satnum; extern int satnum;
const struct {
float d[4][3];
struct {
float vc,A,B;
} rad[3];
struct {
float Ns;
float b[3];
} cor[3];
} satcal[2]=
const struct
{
float d[4][3];
struct
{
float vc, A, B;
} rad[3];
struct
{
float Ns;
float b[3];
} cor[3];
} satcal[2] =
#include "satcal.h" #include "satcal.h"

typedef struct {
double Nbb;
double Cs;
double Cb;
int ch;
typedef struct
{
double Nbb;
double Cs;
double Cb;
int ch;
} tempparam; } tempparam;


/* temperature compensation for IR channel */ /* temperature compensation for IR channel */
static void tempcomp(double t[16], int ch,tempparam *tpr)
static void
tempcomp (double t[16], int ch, tempparam * tpr)
{ {
double Tbb,T[4];
double C;
double r;
int n;

tpr->ch=ch-3;

/* compute equivalent T black body */
for (n=0;n<4;n++) {
float d0,d1,d2;

C=t[9+n]*4.0;
d0=satcal[satnum].d[n][0];
d1=satcal[satnum].d[n][1];
d2=satcal[satnum].d[n][2];
T[n]=d0;
T[n]+=d1*C; C=C*C;
T[n]+=d2*C;
}
Tbb=(T[0]+T[1]+T[2]+T[3])/4.0;
Tbb=satcal[satnum].rad[tpr->ch].A+satcal[satnum].rad[tpr->ch].B*Tbb;

/* compute radiance Black body */
C=satcal[satnum].rad[tpr->ch].vc;
tpr->Nbb=c1*C*C*C/(exp(c2*C/Tbb)-1.0);
/* store Count Blackbody and space */
tpr->Cs=Cs*4.0;
tpr->Cb=t[14]*4.0;
double Tbb, T[4];
double C;
double r;
int n;

tpr->ch = ch - 3;

/* compute equivalent T black body */
for (n = 0; n < 4; n++) {
float d0, d1, d2;

C = t[9 + n] * 4.0;
d0 = satcal[satnum].d[n][0];
d1 = satcal[satnum].d[n][1];
d2 = satcal[satnum].d[n][2];
T[n] = d0;
T[n] += d1 * C;
C = C * C;
T[n] += d2 * C;
}
Tbb = (T[0] + T[1] + T[2] + T[3]) / 4.0;
Tbb = satcal[satnum].rad[tpr->ch].A + satcal[satnum].rad[tpr->ch].B * Tbb;

/* compute radiance Black body */
C = satcal[satnum].rad[tpr->ch].vc;
tpr->Nbb = c1 * C * C * C / (exp (c2 * C / Tbb) - 1.0);
/* store Count Blackbody and space */
tpr->Cs = Cs * 4.0;
tpr->Cb = t[14] * 4.0;
} }


static double tempcal(float Ce,tempparam *rgpr)
static double
tempcal (float Ce, tempparam * rgpr)
{ {
double Nl,Nc,Ns,Ne;
double T,vc;
double Nl, Nc, Ns, Ne;
double T, vc;


Ns=satcal[satnum].cor[rgpr->ch].Ns;
Nl=Ns+(rgpr->Nbb-Ns)*(rgpr->Cs-Ce*4.0)/(rgpr->Cs-rgpr->Cb);
Nc=satcal[satnum].cor[rgpr->ch].b[0]+
satcal[satnum].cor[rgpr->ch].b[1]*Nl+
satcal[satnum].cor[rgpr->ch].b[2]*Nl*Nl;
Ns = satcal[satnum].cor[rgpr->ch].Ns;
Nl = Ns + (rgpr->Nbb - Ns) * (rgpr->Cs - Ce * 4.0) / (rgpr->Cs - rgpr->Cb);
Nc = satcal[satnum].cor[rgpr->ch].b[0] +
satcal[satnum].cor[rgpr->ch].b[1] * Nl +
satcal[satnum].cor[rgpr->ch].b[2] * Nl * Nl;


Ne=Nl+Nc;
Ne = Nl + Nc;


vc=satcal[satnum].rad[rgpr->ch].vc;
T=c2*vc/log(c1*vc*vc*vc/Ne+1.0);
T=(T-satcal[satnum].rad[rgpr->ch].A)/satcal[satnum].rad[rgpr->ch].B;
vc = satcal[satnum].rad[rgpr->ch].vc;
T = c2 * vc / log (c1 * vc * vc * vc / Ne + 1.0);
T = (T - satcal[satnum].rad[rgpr->ch].A) / satcal[satnum].rad[rgpr->ch].B;


/* rescale to range 0-255 for +40-60 °C */
T=(-T+273.15+40)/100.0*255.0;
/* rescale to range 0-255 for +40-60 °C */
T = (-T + 273.15 + 40) / 100.0 * 255.0;


return(T);
return (T);
} }


int Temperature(float **prow,int nrow,int channel,int offset)
int
Temperature (float **prow, int nrow, int channel, int offset)
{ {
tempparam temp;
int n;
tempparam temp;
int n;


printf("Temperature ");
printf ("Temperature ");


tempcomp(tele,channel,&temp);
tempcomp (tele, channel, &temp);




for(n=0;n<nrow;n++) {
float *pixelv;
int i,c;
for (n = 0; n < nrow; n++) {
float *pixelv;
int i, c;


pixelv=prow[n];
for(i=0;i<1001;i++) {
float pv;
pixelv = prow[n];
for (i = 0; i < 1001; i++) {
float pv;


pv=tempcal(pixelv[i+offset],&temp);
pv = tempcal (pixelv[i + offset], &temp);


if(pv>255.0) pv=255.0;
if(pv<0.0) pv=0.0;
pixelv[i+offset]=pv;
}
}
printf("Done\n");
if (pv > 255.0)
pv = 255.0;
if (pv < 0.0)
pv = 0.0;
pixelv[i + offset] = pv;
}
}
printf ("Done\n");
} }

+ 137
- 154
reg.c View File

@@ -8,161 +8,144 @@
Prentice Hall, International Editions: ISBN 0-13-625047-5 Prentice Hall, International Editions: ISBN 0-13-625047-5
This free software is compliments of the author. This free software is compliments of the author.
E-mail address: in%"mathews@fullerton.edu" E-mail address: in%"mathews@fullerton.edu"
*/
*/
#include<math.h> #include<math.h>
#define DMAX 5 /* Maximum degree of polynomial */ #define DMAX 5 /* Maximum degree of polynomial */
#define NMAX 10 /* Maximum number of points */ #define NMAX 10 /* Maximum number of points */
static void FactPiv(int N, double A[DMAX][DMAX], double B[], double Cf[]);
void polyreg(const int M, const int N, const double X[], const double Y[], double C[])
{
int R, K, J; /* Loop counters */
double A[DMAX][DMAX]; /* A */
double B[DMAX];
double P[2*DMAX+1];
double x, y;
double p;
/* Zero the array */
for (R = 0; R < M+1; R++) B[R] = 0;
/* Compute the column vector */
for (K = 0; K < N; K++)
{
y = Y[K];
x = X[K];
p = 1.0;
for( R = 0; R < M+1; R++ )
{
B[R] += y * p;
p = p*x;
}
}
/* Zero the array */
for (J = 1; J <= 2*M; J++) P[J] = 0;
P[0] = N;
/* Compute the sum of powers of x_(K-1) */
for (K = 0; K < N; K++)
{
x = X[K];
p = X[K];
for (J = 1; J <= 2*M; J++)
{
P[J] += p;
p = p * x;
}
}
/* Determine the matrix entries */
for (R = 0; R < M+1; R++)
{
for( K = 0; K < M+1; K++) A[R][K] = P[R+K];
}
static void FactPiv (int N, double A[DMAX][DMAX], double B[], double Cf[]);
void
polyreg (const int M, const int N, const double X[], const double Y[],
double C[])
{
int R, K, J; /* Loop counters */
double A[DMAX][DMAX]; /* A */
double B[DMAX];
double P[2 * DMAX + 1];
double x, y;
double p;
/* Zero the array */
for (R = 0; R < M + 1; R++)
B[R] = 0;
/* Compute the column vector */
for (K = 0; K < N; K++)
{
y = Y[K];
x = X[K];
p = 1.0;
for (R = 0; R < M + 1; R++)
{
B[R] += y * p;
p = p * x;
}
}
/* Zero the array */
for (J = 1; J <= 2 * M; J++)
P[J] = 0;
P[0] = N;
/* Compute the sum of powers of x_(K-1) */
for (K = 0; K < N; K++)
{
x = X[K];
p = X[K];
for (J = 1; J <= 2 * M; J++)
{
P[J] += p;
p = p * x;
}
}
/* Determine the matrix entries */
for (R = 0; R < M + 1; R++)
{
for (K = 0; K < M + 1; K++)
A[R][K] = P[R + K];
}
/* Solve the linear system of M + 1 equations : A*C = B /* Solve the linear system of M + 1 equations : A*C = B
for the coefficient vector C = (c_1,c_2,..,c_M,c_(M+1)) */
FactPiv(M+1, A, B, C);
} /* end main */
/*--------------------------------------------------------*/
static void FactPiv(int N, double A[DMAX][DMAX], double B[], double Cf[])
{
int K, P, C, J; /* Loop counters */
int Row[NMAX]; /* Field with row-number */
double X[DMAX], Y[DMAX];
double SUM, DET = 1.0;
int T;
/* Initialize the pointer vector */
for (J = 0; J< N; J++) Row[J] = J;
/* Start LU factorization */
for (P = 0; P < N - 1; P++) {
/* Find pivot element */
for (K = P + 1; K < N; K++) {
if ( fabs(A[Row[K]][P]) > fabs(A[Row[P]][P]) ) {
/* Switch the index for the p-1 th pivot row if necessary */
T = Row[P];
Row[P] = Row[K];
Row[K] = T;
DET = - DET;
}
} /* End of simulated row interchange */
if (A[Row[P]][P] == 0) {
printf("The matrix is SINGULAR !\n");
printf("Cannot use algorithm --> exit\n");
exit(1);
}
/* Multiply the diagonal elements */
DET = DET * A[Row[P]][P];
/* Form multiplier */
for (K = P + 1; K < N; K++) {
A[Row[K]][P]= A[Row[K]][P] / A[Row[P]][P];
/* Eliminate X_(p-1) */
for (C = P + 1; C < N + 1; C++) {
A[Row[K]][C] -= A[Row[K]][P] * A[Row[P]][C];
}
}
} /* End of L*U factorization routine */
DET = DET * A[Row[N-1]][N-1];
/* Start the forward substitution */
for(K = 0; K < N; K++) Y[K] = B[K];
Y[0] = B[Row[0]];
for ( K = 1; K < N; K++) {
SUM =0;
for ( C = 0; C <= K -1; C++) SUM += A[Row[K]][C] * Y[C];
Y[K] = B[Row[K]] - SUM;
}
/* Start the back substitution */
X[N-1] = Y[N-1] / A[Row[N-1]][N-1];
for (K = N - 2; K >= 0; K--) {
SUM = 0;
for (C = K + 1; C < N; C++) {
SUM += A[Row[K]][C] * X[C];
}
X[K] = ( Y[K] - SUM) / A[Row[K]][K];
} /* End of back substitution */
/* Output */
for( K = 0; K < N; K++)
Cf[K]=X[K];
}
for the coefficient vector C = (c_1,c_2,..,c_M,c_(M+1)) */
FactPiv (M + 1, A, B, C);
} /* end main */

/*--------------------------------------------------------*/
static void
FactPiv (int N, double A[DMAX][DMAX], double B[], double Cf[])
{
int K, P, C, J; /* Loop counters */
int Row[NMAX]; /* Field with row-number */
double X[DMAX], Y[DMAX];
double SUM, DET = 1.0;
int T;
/* Initialize the pointer vector */
for (J = 0; J < N; J++)
Row[J] = J;
/* Start LU factorization */
for (P = 0; P < N - 1; P++) {
/* Find pivot element */
for (K = P + 1; K < N; K++) {
if (fabs (A[Row[K]][P]) > fabs (A[Row[P]][P])) {
/* Switch the index for the p-1 th pivot row if necessary */
T = Row[P];
Row[P] = Row[K];
Row[K] = T;
DET = -DET;
}
} /* End of simulated row interchange */
if (A[Row[P]][P] == 0) {
printf ("The matrix is SINGULAR !\n");
printf ("Cannot use algorithm --> exit\n");
exit (1);
}
/* Multiply the diagonal elements */
DET = DET * A[Row[P]][P];
/* Form multiplier */
for (K = P + 1; K < N; K++) {
A[Row[K]][P] = A[Row[K]][P] / A[Row[P]][P];
/* Eliminate X_(p-1) */
for (C = P + 1; C < N + 1; C++) {
A[Row[K]][C] -= A[Row[K]][P] * A[Row[P]][C];
}
}
} /* End of L*U factorization routine */
DET = DET * A[Row[N - 1]][N - 1];
/* Start the forward substitution */
for (K = 0; K < N; K++)
Y[K] = B[K];
Y[0] = B[Row[0]];
for (K = 1; K < N; K++) {
SUM = 0;
for (C = 0; C <= K - 1; C++)
SUM += A[Row[K]][C] * Y[C];
Y[K] = B[Row[K]] - SUM;
}
/* Start the back substitution */
X[N - 1] = Y[N - 1] / A[Row[N - 1]][N - 1];
for (K = N - 2; K >= 0; K--) {
SUM = 0;
for (C = K + 1; C < N; C++) {
SUM += A[Row[K]][C] * X[C];
}
X[K] = (Y[K] - SUM) / A[Row[K]][K];
} /* End of back substitution */
/* Output */
for (K = 0; K < N; K++)
Cf[K] = X[K];
}


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