void calc_minmax_polsarpro(const char *inFile, double *min, double *max)
{
int ii,jj;
*min = 999999;
*max = -999999;
char *enviName = (char *) MALLOC(sizeof(char)*(strlen(inFile) + 10));
sprintf(enviName, "%s.hdr", inFile);
envi_header *envi = read_envi(enviName);
meta_parameters *meta = envi2meta(envi);
float *data = MALLOC(sizeof(float) * meta->general->sample_count);
FILE *fp = FOPEN(inFile, "rb");
asfPrintStatus("\nCalculating min and max ...\n");
for (ii=0; ii<meta->general->line_count; ++ii) {
asfPercentMeter(((double)ii/(double)meta->general->line_count));
get_float_line(fp, meta, ii, data);
for (jj=0; jj<meta->general->sample_count; ++jj) {
ieee_big32(data[jj]);
if (data[jj] < *min) *min = data[jj];
if (data[jj] > *max) *max = data[jj];
}
}
asfPercentMeter(1.0);
FCLOSE(fp);
FREE(data);
meta_free(meta);
FREE(envi);
FREE(enviName);
}
/* Calculate minimum, maximum, mean and standard deviation for a floating point
image. A mask value can be defined that is excluded from this calculation.
If no mask value is supposed to be used, pass the mask value as NAN. */
void calc_stats(float *data, long long pixel_count, double mask, double *min,
double *max, double *mean, double *stdDev)
{
long long ii, pix;
/* Initialize values */
*min = 99999;
*max = -99999;
*mean = 0.0;
*stdDev = 0.0;
pix = 0;
asfPrintStatus("\nFinding min, max, and mean...\n");
for (ii=0; ii<pixel_count; ii++) {
asfPercentMeter(((double)ii/(double)pixel_count));
if (!ISNAN(mask)) {
if (data[ii] < *min && !FLOAT_EQUIVALENT(data[ii], mask))
*min = data[ii];
if (data[ii] > *max && !FLOAT_EQUIVALENT(data[ii], mask))
*max = data[ii];
if (!FLOAT_EQUIVALENT(data[ii], mask)) {
*mean += data[ii];
pix++;
}
}
else {
if (data[ii] < *min) *min = data[ii];
if (data[ii] > *max) *max = data[ii];
*mean += data[ii];
++pix;
}
}
asfPercentMeter(1.0);
*mean /= pix;
asfPrintStatus("\nCalculating standard deviation...\n");
for (ii=0; ii<pixel_count; ii++) {
asfPercentMeter(((double)ii/(double)pixel_count));
if (!ISNAN(mask)) {
if (!FLOAT_EQUIVALENT(data[ii], mask))
*stdDev += (data[ii] - *mean) * (data[ii] - *mean);
}
else
*stdDev += (data[ii] - *mean) * (data[ii] - *mean);
}
*stdDev = sqrt(*stdDev/(pix - 1));
asfPercentMeter(1.0);
return;
}
int get_terrasar_thumbnail_data(int thumb_size_x, int thumb_size_y,
meta_parameters *meta, void *read_client_info,
void *dest_void, int data_type)
{
ReadTerrasarClientInfo *info = (ReadTerrasarClientInfo*) read_client_info;
int ii, jj;
int ns = meta->general->sample_count;
int sf = meta->general->line_count / thumb_size_y;
if (info->multilook)
sf *= meta->sar->look_count;
float *dest = (float*)dest_void;
// Read in the image
short int *shorts = MALLOC(sizeof(short int)*ns*2);
for (ii=0; ii<thumb_size_y; ii++) {
int line = ii*sf;
long long offset = (long long) (info->header + line*info->width);
FSEEK(info->fp, offset, SEEK_SET);
FREAD(shorts, sizeof(short int), ns*2, info->fp);
for (jj=0; jj<thumb_size_x; jj++)
dest[jj + ii*thumb_size_x] = hypot(shorts[jj*sf*2], shorts[jj*sf*2+1]);
asfPercentMeter((float)ii/(thumb_size_y - 1));
}
free(shorts);
return TRUE;
}
int get_uavsar_thumbnail_data(int thumb_size_x, int thumb_size_y,
meta_parameters *meta, void *read_client_info,
void *dest_void, int data_type)
{
ReadUavsarClientInfo *info = (ReadUavsarClientInfo*) read_client_info;
int i, j;
int sf = meta->general->line_count / thumb_size_y;
int ns = meta->general->sample_count;
// temporary storage
float *buf = MALLOC(sizeof(float)*ns);
if (meta->general->data_type == ASF_BYTE) {
unsigned char *dest = (unsigned char*)dest_void;
if (data_type == GREYSCALE_BYTE) {
for (i=0; i<thumb_size_y; ++i) {
get_uavsar_line(info, meta, i*sf, buf);
for (j=0; j<thumb_size_x; ++j)
dest[i*thumb_size_x+j] = (unsigned char)(buf[j*sf]);
asfPercentMeter((float)i/(thumb_size_y-1));
}
}
else {
assert(FALSE);
}
} else {
float *dest = (float*)dest_void;
if (data_type == GREYSCALE_FLOAT) {
for (i=0; i<thumb_size_y; ++i) {
get_uavsar_line(info, meta, i*sf, buf);
for (j=0; j<thumb_size_x; ++j)
dest[i*thumb_size_x+j] = buf[j*sf];
asfPercentMeter((float)i/(thumb_size_y-1));
}
} else {
assert(FALSE);
}
}
free(buf);
return TRUE;
}
int get_asf_thumbnail_data(int thumb_size_x, int thumb_size_y,
meta_parameters *meta, void *read_client_info,
void *dest_void, int data_type)
{
ReadAsfClientInfo *info = (ReadAsfClientInfo*) read_client_info;
int sf = meta->general->line_count / thumb_size_y;
//assert(sf==meta->general->sample_count / thumb_size_x);
int i,j;
int nl = meta->general->line_count;
int ns = meta->general->sample_count;
// temporary storage
float *buf = MALLOC(sizeof(float)*ns);
if (meta->general->data_type == ASF_BYTE) {
// BYTE case -- data file contains bytes.
unsigned char *dest = (unsigned char*)dest_void;
if (data_type == GREYSCALE_BYTE) {
// data file contains byte data, and we are just pulling out
// one band to display.
int off = nl*info->band_gs;
for (i=0; i<thumb_size_y; ++i) {
get_asf_line(info, meta, i*sf + off, buf);
for (j=0; j<thumb_size_x; ++j)
dest[i*thumb_size_x+j] = (unsigned char)(buf[j*sf]);
asfPercentMeter((float)i/(thumb_size_y-1));
}
}
else {
// rgb case -- we have to read up to 3 bands from the file,
// and put them together
assert(data_type == RGB_BYTE);
int off, k;
// first set dest buffer to all zeros. This way, any bands that
// aren't set up will just come out black
memset(dest, 0, 3*thumb_size_x*thumb_size_y);
// "tot" is to help with the PercentMeter -- the total number
// of lines that we will need to read. "l" is the counter
int tot = (info->band_r>=0) + (info->band_g>=0) + (info->band_b>=0);
tot *= thumb_size_y;
int l=0;
// to do each of the bands, we read the data into a float array,
// then cast (back) to byte into the interleaved "dest" array
// (interleaved in the sense that we only populate every 3rd item
// each time through)
// red band
if (info->band_r >= 0) {
off = nl*info->band_r;
for (i=0; i<thumb_size_y; ++i) {
k=3*i*thumb_size_x; // starting point in dest array
get_asf_line(info, meta, i*sf + off, buf);
for (j=0; j<thumb_size_x; ++j, k += 3)
dest[k] = (unsigned char)(buf[j*sf]);
asfPercentMeter((float)(l++)/(tot-1));
}
}
// green band
if (info->band_g >= 0) {
off = nl*info->band_g;
for (i=0; i<thumb_size_y; ++i) {
k=3*i*thumb_size_x+1;
get_asf_line(info, meta, i*sf + off, buf);
for (j=0; j<thumb_size_x; ++j, k += 3)
dest[k] = (unsigned char)(buf[j*sf]);
asfPercentMeter((float)(l++)/(tot-1));
}
}
// blue band
if (info->band_b >= 0) {
off = nl*info->band_b;
for (i=0; i<thumb_size_y; ++i) {
k=3*i*thumb_size_x+2;
get_asf_line(info, meta, i*sf + off, buf);
for (j=0; j<thumb_size_x; ++j, k += 3)
dest[k] = (unsigned char)(buf[j*sf]);
asfPercentMeter((float)(l++)/(tot-1));
}
}
//assert(l==tot);
if (l!=tot) printf("These are supposed to be equal: %d %d\n",
l, tot);
}
} else {
// this is the normal case -- regular old floating point data,
// we just read with get_float_line and populate directly into
// a floating point array
float *dest = (float*)dest_void;
if (data_type == GREYSCALE_FLOAT) {
int off = nl*info->band_gs;
for (i=0; i<thumb_size_y; ++i) {
get_asf_line(info, meta, i*sf + off, buf);
for (j=0; j<thumb_size_x; ++j)
dest[i*thumb_size_x+j] = buf[j*sf];
asfPercentMeter((float)i/(thumb_size_y-1));
}
} else if (data_type == RGB_FLOAT) {
int off, k;
// first set dest buffer to all zeros. This way, any bands that
// aren't set up will just come out black.
memset(dest, 0, 3*sizeof(float)*thumb_size_x*thumb_size_y);
// "tot" is to help with the PercentMeter -- the total number
// of lines that we will need to read. "l" is the counter
int tot = (info->band_r>=0) + (info->band_g>=0) + (info->band_b>=0);
tot *= thumb_size_y;
int l=0;
// to do each of the bands, we read the data into a float array,
// then cast (back) to byte into the interleaved "dest" array
// (interleaved in the sense that we only populate every 3rd item
// each time through)
// red band
if (info->band_r >= 0) {
off = nl*info->band_r;
for (i=0; i<thumb_size_y; ++i) {
k=3*i*thumb_size_x; // starting point in dest array
get_asf_line(info, meta, i*sf + off, buf);
for (j=0; j<thumb_size_x; ++j, k += 3)
dest[k] = buf[j*sf];
asfPercentMeter((float)(l++)/(tot-1));
}
}
// green band
if (info->band_g >= 0) {
off = nl*info->band_g;
for (i=0; i<thumb_size_y; ++i) {
k=3*i*thumb_size_x+1;
get_asf_line(info, meta, i*sf + off, buf);
for (j=0; j<thumb_size_x; ++j, k += 3)
dest[k] = buf[j*sf];
asfPercentMeter((float)(l++)/(tot-1));
}
}
// blue band
if (info->band_b >= 0) {
off = nl*info->band_b;
for (i=0; i<thumb_size_y; ++i) {
k=3*i*thumb_size_x+2;
get_asf_line(info, meta, i*sf + off, buf);
for (j=0; j<thumb_size_x; ++j, k += 3)
dest[k] = buf[j*sf];
asfPercentMeter((float)(l++)/(tot-1));
}
}
//assert(l==tot);
if (l!=tot) printf("These are supposed to be equal: %d %d\n",
l, tot);
} else {
assert(FALSE);
}
}
free(buf);
return TRUE;
}
/* Create histogram of the data and get the summation of the
* square of (sample-mean) to use in calculation of rmse & stdev */
stat_parameters calc_hist(stat_parameters stats, char *sar_name, int band, meta_parameters *meta,
double sum_of_samples, long samples_counted, int mask_flag)
{
FILE *fp;
long start_line, start_sample, window_height, window_width;
long percent_complete, line, sample, ii, band_offset;
double diff_squared_sum=0.0;
float *data_line;
start_line = stats.upper_left_line;
start_sample = stats.upper_left_samp;
window_height = stats.lower_right_line - start_line;
window_width = stats.lower_right_samp - start_sample;
data_line = (float *)MALLOC(sizeof(float)*meta->general->sample_count);
fp = FOPEN(sar_name, "r");
/* Initialize the histogram array */
for (ii=0; ii<256; ii++) stats.histogram[ii] = 0;
if (meta->general->data_type != ASF_BYTE) {
/* Set slope and offset, to map pixels to [0..255].
* byte = slope * in + offset
* 0 = slope * min + offset
* 255 = slope * max + offset
* Therefore: */
stats.slope = 255.0 / (stats.max-stats.min);
stats.offset = -stats.slope * stats.min;
}
/* Get histogram of the data. If its byte data just slap it into the
* histogram; otherwise use slope & offset to scale the data */
stats.mean = sum_of_samples / (double)samples_counted;
percent_complete=0;
band_offset = band * meta->general->line_count;
for (line=start_line+band_offset; line<start_line+window_height+band_offset; line++) {
if (!quietflag) asfPercentMeter((float)(line-start_line-band_offset)/(float)(window_height-start_line));
get_float_line(fp, meta, line, data_line);
for (sample=start_sample; sample<start_sample+window_width; sample++) {
int bin = (meta->general->data_type == ASF_BYTE)
? (int)data_line[sample]
: (int)(stats.slope*data_line[sample]+stats.offset);
if (bin < 0) bin = 0;
else if (bin > 255) bin = 255;
if ( mask_flag && FLOAT_EQUIVALENT(data_line[sample],stats.mask) )
continue;
stats.histogram[bin]++;
diff_squared_sum += SQR(data_line[sample] - stats.mean);
}
}
if (!quietflag) asfPercentMeter(1.0);
FREE(data_line);
FCLOSE(fp);
/* Populate stats structure */
stats.rmse =
sqrt( fabs( diff_squared_sum / (double)samples_counted ) );
stats.std_deviation =
sqrt( fabs( diff_squared_sum / (double)(samples_counted-1) ) );
return stats;
}
int main(int argc, char **argv)
{
double min, max; /* Minimum & maximum sample values */
double sum_of_samples=0.0; /* Sum of all samples accounted for */
double sum_of_squared_samples=0.0; /* Sum of all squared samples accounted for*/
double trim_fraction; /* Fraction used to trim the histogram */
int ii; /* Loop index */
long samples_counted=0; /* Number of all samples accounted for */
float *data_line; /* Buffer for a line of samples */
long line, sample; /* Line and sample indices */
long num_lines, num_samples; /* Number of lines and samples */
int percent_complete=0; /* Percent of data sweep completed */
int overmeta_flag=FALSE; /* If TRUE write over current .meta file */
int overstat_flag=FALSE; /* If TRUE write over current .stat file */
int nometa_flag=FALSE; /* If TRUE do not write .meta file */
int nostat_flag=FALSE; /* If TRUE do not write .stat file */
int mask_flag=FALSE; /* TRUE if user specifies a mask value */
int trim_flag=FALSE; /* If TRUE trim histogram */
double mask=NAN; /* Value to ignore while caculating stats*/
char meta_name[261]; /* Meta file name */
meta_parameters *meta; /* SAR meta data structure */
char sar_name[256]; /* SAR file name WITH extention */
FILE *sar_file; /* SAR data file pointer to take stats on*/
stat_parameters *stats; /* Statistics structure */
char stat_name[261]; /* Stats file name */
extern int currArg; /* Pre-initialized to 1 */
/* We initialize these to a magic number for checking. */
long start_line = -1; /* Window starting line. */
long start_sample = -1; /* Window starting sample. */
long window_height = -1; /* Window height in lines. */
long window_width = -1; /* Window width in samples. */
/* parse command line */
handle_license_and_version_args(argc, argv, "stats");
logflag=quietflag=FALSE;
while (currArg < (argc-1)) {
char *key = argv[currArg++];
if (strmatch(key,"-quiet")) {
quietflag=TRUE;
}
else if (strmatch(key,"-log")) {
CHECK_ARG(1);
strcpy(logFile,GET_ARG(1));
fLog = FOPEN(logFile, "a");
logflag=TRUE;
}
else if (strmatch(key,"-mask")) {
CHECK_ARG(1);
mask = atof(GET_ARG(1));
mask_flag=TRUE;
}
else if (strmatch(key,"-overmeta")) {
overmeta_flag=TRUE;
}
else if (strmatch(key,"-overstat")) {
overstat_flag=TRUE;
}
else if (strmatch(key,"-nometa")) {
nometa_flag=TRUE;
}
else if (strmatch(key,"-nostat")) {
nostat_flag=TRUE;
}
else if (strmatch(key,"-startline")) {
CHECK_ARG(1);
nometa_flag=TRUE; /* Implied. */
start_line = atol(GET_ARG(1));
if ( start_line < 0 ) {
printf("error: -startline argument must be greater than or equal to zero\n");
usage(argv[0]);
}
}
else if (strmatch(key,"-startsample")) {
CHECK_ARG(1);
nometa_flag=TRUE; /* Implied. */
start_sample = atol(GET_ARG(1));
if ( start_sample < 0 ) {
printf("error: -startsample argument must be greater than or equal to zero\n");
usage(argv[0]);
}
}
else if (strmatch(key,"-width")) {
CHECK_ARG(1);
nometa_flag=TRUE; /* Implied. */
window_width = atol(GET_ARG(1));
if ( window_width < 0 ) {
printf("error: -width argument must be greater than or equal to zero\n");
usage(argv[0]);
}
}
else if (strmatch(key,"-height")) {
CHECK_ARG(1);
nometa_flag=TRUE; /* Implied. */
window_height = atol(GET_ARG(1));
if ( window_height < 0 ) {
printf("error: -height argument must be greater than or equal to zero\n");
usage(argv[0]);
}
}
else if (strmatch(key,"-trim")) {
CHECK_ARG(1);
trim_flag=TRUE; /* Implied. */
trim_fraction = atof(GET_ARG(1));
}
else {printf( "\n**Invalid option: %s\n",argv[currArg-1]); usage(argv[0]);}
}
if ((argc-currArg)<1) {printf("Insufficient arguments.\n"); usage(argv[0]);}
strcpy (sar_name, argv[currArg]);
char *ext = findExt(sar_name);
if (ext == NULL || strcmp("IMG", uc(ext)) != 0) {
strcpy(sar_name, appendExt(sar_name, ".img"));
}
create_name(meta_name, sar_name, ".meta");
create_name(stat_name, sar_name, ".stat");
printf("\nProgram: stats\n\n");
if (logflag) {
fprintf(fLog, "\nProgram: stats\n\n");
}
printf("\nCalculating statistics for %s\n\n", sar_name);
if (logflag) {
fprintf(fLog,"\nCalculating statistics for %s\n\n", sar_name);
}
meta = meta_read(meta_name);
num_lines = meta->general->line_count;
num_samples = meta->general->sample_count;
if ( start_line == -1 ) start_line = 0;
if ( start_line > num_lines ) {
printf("error: -startline argument is larger than index of last line in image\n");
exit(EXIT_FAILURE);
}
if ( start_sample == -1 ) start_sample = 0;
if ( start_sample > num_samples ) {
printf("error: -startsample argument is larger than index of last sample in image\n");
exit(EXIT_FAILURE);
}
if ( window_height == -1 ) window_height = num_lines;
if ( start_line + window_height > num_lines ) {
printf("warning: window specified with -startline, -height options doesn't fit in image\n");
}
if ( window_width == -1 ) window_width = num_samples;
if ( start_sample + window_width > num_samples ) {
printf("warning: window specified with -startsample, -width options doesn't fit in image\n");
}
/* Make sure we don't over write any files that we don't want to */
if (meta->stats && !overmeta_flag && !nometa_flag) {
printf(" ** The meta file already has a populated statistics structure.\n"
" ** If you want to run this program and replace that structure,\n"
" ** then use the -overmeta option to do so. If you want to run\n"
" ** this program, but don't want to replace the structure, use\n"
" ** the -nometa option.\n");
if (logflag) {
fprintf(fLog,
" ** The meta file already has a populated statistics structure.\n"
" ** If you want to run this program and replace that structure,\n"
" ** then use the -overmeta option to do so. If you want to run\n"
" ** this program, but don't want to replace the structure, use\n"
" ** the -nometa option.\n");
}
exit(EXIT_FAILURE);
}
if (fileExists(stat_name) && !overstat_flag && !nostat_flag) {
printf(" ** The file, %s, already exists. If you want to\n"
" ** overwrite it, then use the -overstat option to do so.\n"
" ** If you want to run the progam but don't want to write\n"
" ** over the current file, then use the -nostat option.\n",
stat_name);
if (logflag) {
fprintf(fLog,
" ** The file, %s, already exists. If you want to\n"
" ** overwrite it, then use the -overstat option to do so.\n"
" ** If you want to run the progam but don't want to write\n"
" ** over the current file, then use the -nostat option.\n",
stat_name);
}
exit(EXIT_FAILURE);
}
/* Let user know the window in which the stats will be taken */
if ((start_line!=0) || (start_sample!=0)
|| (window_height!=num_lines) || (window_width!=num_samples)) {
if (!quietflag) {
printf("Taking statistics on a window with upper left corner (%ld,%ld)\n"
" and lower right corner (%ld,%ld)\n",
start_sample, start_line,
window_width+start_sample, window_height+start_line);
}
if (logflag && !quietflag) {
fprintf(fLog,
"Taking statistics on a window with upper left corner (%ld,%ld)\n"
" and lower right corner (%ld,%ld)\n",
start_sample, start_line,
window_width+start_sample, window_height+start_line);
}
}
/* Allocate line buffer */
data_line = (float *)MALLOC(sizeof(float)*num_samples);
if (meta->stats) FREE(meta->stats);
if (meta->general->band_count <= 0) {
printf(" ** Band count in the existing data is missing or less than zero.\nDefaulting to one band.\n");
if (logflag) {
fprintf(fLog, " ** Band count in the existing data is missing or less than zero.\nDefaulting to one band.\n");
}
meta->general->band_count = 1;
}
meta->stats = meta_statistics_init(meta->general->band_count);
if (!meta->stats) {
printf(" ** Cannot allocate memory for statistics data structures.\n");
if (logflag) {
fprintf(fLog, " ** Cannot allocate memory for statistics data structures.\n");
}
exit(EXIT_FAILURE);
}
stats = (stat_parameters *)MALLOC(sizeof(stat_parameters) * meta->stats->band_count);
if (!stats) {
printf(" ** Cannot allocate memory for statistics data structures.\n");
if (logflag) {
fprintf(fLog, " ** Cannot allocate memory for statistics data structures.\n");
}
exit(EXIT_FAILURE);
}
int band;
long band_offset;
for (band = 0; band < meta->stats->band_count; band++) {
/* Find min, max, and mean values */
if (!quietflag) printf("\n");
if (logflag && !quietflag) fprintf(fLog,"\n");
min = 100000000;
max = -100000000;
sum_of_samples=0.0;
sum_of_squared_samples=0.0;
percent_complete=0;
band_offset = band * meta->general->line_count;
sar_file = FOPEN(sar_name, "r");
for (line=start_line+band_offset; line<start_line+window_height+band_offset; line++) {
if (!quietflag) asfPercentMeter((float)(line-start_line-band_offset)/(float)(window_height-start_line));
get_float_line(sar_file, meta, line, data_line);
for (sample=start_sample; sample<start_sample+window_width; sample++) {
if ( mask_flag && FLOAT_EQUIVALENT(data_line[sample],mask) )
continue;
if (data_line[sample] < min) min=data_line[sample];
if (data_line[sample] > max) max=data_line[sample];
sum_of_samples += data_line[sample];
sum_of_squared_samples += SQR(data_line[sample]);
samples_counted++;
}
}
if (!quietflag) asfPercentMeter(1.0);
// if (!quietflag) printf("\rFirst data sweep: 100%% complete.\n");
FCLOSE(sar_file);
stats[band].min = min;
stats[band].max = max;
stats[band].upper_left_line = start_line;
stats[band].upper_left_samp = start_sample;
stats[band].lower_right_line = start_line + window_height;
stats[band].lower_right_samp = start_sample + window_width;
stats[band].mask = mask;
stats[band] = calc_hist(stats[band], sar_name, band, meta, sum_of_samples,
samples_counted, mask_flag);
/* Remove outliers and trim the histogram by resetting the minimum and
and maximum */
if (trim_flag) {
register int sum=0, num_pixels, minDex=0, maxDex=255;
double overshoot, width;
num_pixels = (int)(samples_counted*trim_fraction);
minDex = 0;
while (sum < num_pixels)
sum += stats[band].histogram[minDex++];
if (minDex-1>=0)
overshoot = (double)(num_pixels-sum)/stats[band].histogram[minDex-1];
else
overshoot = 0;
stats[band].min = (minDex-overshoot-stats[band].offset)/stats[band].slope;
sum=0;
while (sum < num_pixels)
sum += stats[band].histogram[maxDex--];
if (maxDex+1<256)
overshoot = (double)(num_pixels-sum)/stats[band].histogram[maxDex+1];
else
overshoot = 0;
stats[band].max = (maxDex+1+overshoot-stats[band].offset)/stats[band].slope;
/* Widening the range for better visual effect */
width = (stats[band].max-stats[band].min)*(1/(1.0-2*trim_fraction)-1);
stats[band].min -= width/2;
stats[band].max += width/2;
/* Couple useful corrections borrowed from SARview */
if ((stats[band].max-stats[band].min) < 0.01*(max-min)) {
stats[band].max = max;
stats[band].min = min;
}
if (min == 0.0)
stats[band].min=0.0;
if (stats[band].min == stats[band].max)
stats[band].max = stats[band].min + MICRON;
stats[band].slope = 255.0/(stats[band].max-stats[band].min);
stats[band].offset = -stats[band].slope*stats[band].min;
stats[band] = calc_hist(stats[band], sar_name, band, meta, sum_of_samples,
samples_counted, mask_flag);
}
}
if(data_line)FREE(data_line);
/* Populate meta->stats structure */
char **band_names = NULL;
if (meta_is_valid_string(meta->general->bands) &&
strlen(meta->general->bands) &&
meta->general->band_count > 0)
{
band_names = extract_band_names(meta->general->bands, meta->general->band_count);
}
else {
if (meta->general->band_count <= 0) meta->general->band_count = 1;
band_names = (char **) MALLOC (meta->general->band_count * sizeof(char *));
int i;
for (i=0; i<meta->general->band_count; i++) {
band_names[i] = (char *) MALLOC (64 * sizeof(char));
sprintf(band_names[i], "%02d", i);
}
}
int band_no;
for (band_no = 0; band_no < meta->stats->band_count; band_no++) {
strcpy(meta->stats->band_stats[band_no].band_id, band_names[band_no]);
meta->stats->band_stats[band_no].min = stats[band_no].min;
meta->stats->band_stats[band_no].max = stats[band_no].max;
meta->stats->band_stats[band_no].mean = stats[band_no].mean;
meta->stats->band_stats[band_no].rmse = stats[band_no].rmse;
meta->stats->band_stats[band_no].std_deviation = stats[band_no].std_deviation;
meta->stats->band_stats[band_no].mask = stats[band_no].mask;
}
if (band_names) {
int i;
for (i=0; i<meta->general->band_count; i++) {
if (band_names[i]) FREE (band_names[i]);
}
FREE(band_names);
}
/* Print findings to the screen (and log file if applicable)*/
if (!quietflag) {
printf("\n");
printf("Statistics found:\n");
if (mask_flag)
{ printf("Used mask %-16.11g\n",mask); }
printf("Number of bands: %d\n", meta->stats->band_count);
for (band=0; band<meta->stats->band_count; band++) {
printf("\n\nBand name = \"%s\"\n", meta->stats->band_stats[band].band_id);
printf("Minimum = %-16.11g\n",stats[band].min);
printf("Maximum = %-16.11g\n",stats[band].max);
printf("Mean = %-16.11g\n",stats[band].mean);
printf("Root mean squared error = %-16.11g\n",
stats[band].rmse);
printf("Standard deviation = %-16.11g\n",
stats[band].std_deviation);
printf("\n");
printf("Data fit to [0..255] using equation: byte = %g * sample + %g\n",
stats[band].slope, stats[band].offset);
if (trim_flag)
printf("Trimming fraction = %.3g\n", trim_fraction);
printf("\n");
printf("Histogram:\n");
for (ii=0; ii<256; ii++) {
if (ii%8 == 0) {
printf("%s%3i-%3i:",
(ii==0) ? "" : "\n",
ii, ii+7);
}
printf(" %8i", stats[band].histogram[ii]);
}
printf("\n");
}
}
if (logflag && !quietflag) {
fprintf(fLog,"Statistics found:\n");
if (mask_flag)
{ fprintf(fLog,"Used mask %-16.11g\n",mask); }
fprintf(fLog,"Number of bands: %d\n", meta->stats->band_count);
for (band=0; band<meta->stats->band_count; band++) {
fprintf(fLog,"\n\nBand name = \"%s\"\n", meta->stats->band_stats[band].band_id);
fprintf(fLog,"Minimum = %-16.11g\n",stats[band].min);
fprintf(fLog,"Maximum = %-16.11g\n",stats[band].max);
fprintf(fLog,"Mean = %-16.11g\n",stats[band].mean);
fprintf(fLog,"Root mean squared error = %-16.11g\n",
stats[band].rmse);
fprintf(fLog,"Standard deviation = %-16.11g\n",
stats[band].std_deviation);
fprintf(fLog,"\n");
fprintf(fLog,"Data fit to [0..255] using equation: byte = %g * sample + %g\n",
stats[band].slope, stats[band].offset);
if (trim_flag)
fprintf(fLog,"Trimming fraction = %.3g\n", trim_fraction);
fprintf(fLog,"\n");
fprintf(fLog,"Histogram:\n");
for (ii=0; ii<256; ii++) {
if (ii%8 == 0) {
fprintf(fLog,"%s%3i-%3i:",
(ii==0) ? "" : "\n",
ii, ii+7);
}
fprintf(fLog," %8i", stats[band].histogram[ii]);
}
fprintf(fLog,"\n");
}
}
/* Write out .meta and .stat files */
if (!nometa_flag) meta_write(meta, meta_name);
if (!nostat_flag) stat_write(stats, stat_name, meta->stats->band_count);
/* Free the metadata structure */
meta_free(meta);
/* Report */
if (!quietflag) {
printf("\n");
printf("Statistics taken on image file %s.\n",sar_name);
if (!nometa_flag)
printf("Statistics written to the stats block in %s.\n",
meta_name);
if (!nostat_flag)
printf("Statistics plus histogram written to %s.\n",
stat_name);
printf("\n");
}
if (logflag && !quietflag) {
fprintf(fLog,"\n");
fprintf(fLog,"Statistics taken on image file '%s'\n",sar_name);
if (!nometa_flag)
fprintf(fLog,"Statistics written to the stats block in %s\n",
meta_name);
if (!nostat_flag)
fprintf(fLog,"Statistics plus histogram written to %s\n",
stat_name);
fprintf(fLog,"\n");
}
if (fLog) FCLOSE(fLog);
return 0;
}
// if png_flag is true, outputs a PNG. if false, outputs a jpeg
static void patchToRGBImage(char *outname, int png_flag)
{
update_status("Generating %s", outname);
if (!quietflag)
printf(" Outputting Debugging image '%s'...\n",outname);
// input name is just the output name with ".img"
char *polar_name = MALLOC((strlen(outname)+20)*sizeof(char));
sprintf(polar_name, "%s_polar.img", outname);
// will multilook, as well as conver to polar, generates a 2-band
// file (amplitude is band 1, phase is band 2)
c2p(outname,polar_name,FALSE,TRUE);
// prepare for RGB conversion
int i,j;
meta_parameters *meta = meta_read(polar_name);
int nl = meta->general->line_count;
int ns = meta->general->sample_count;
float *amp = MALLOC(sizeof(float)*ns);
float *phase = MALLOC(sizeof(float)*ns);
unsigned char *red = MALLOC(sizeof(unsigned char)*ns);
unsigned char *grn = MALLOC(sizeof(unsigned char)*ns);
unsigned char *blu = MALLOC(sizeof(unsigned char)*ns);
FILE *fp = fopenImage(polar_name, "rb");
const double TWOPI=2.*PI;
const double PIOVER3=PI/3.;
int n=0;
// first/second passes are stats gathering
asfPrintStatus("Gathering stats...\n");
double avg=0, stddev=0;
for (i=0; i<nl; i+=3) {
get_float_line(fp,meta,i,amp);
for (j=0; j<ns; j+=3) {
avg += amp[j];
++n;
}
asfPercentMeter((float)i/((float)nl*2.));
}
avg /= (double)n;
for (i=0; i<nl; i+=3) {
get_float_line(fp,meta,i,amp);
for (j=0; j<ns; j+=3) {
stddev += (amp[j]-avg)*(amp[j]-avg);
}
asfPercentMeter((float)(i+nl)/((float)nl*2.));
}
asfPercentMeter(1);
stddev = sqrt(stddev/(double)n);
double min = avg - 2*stddev;
double max = avg + 2*stddev;
// open up PNG/JPEG output file
FILE *ofp=NULL;
struct jpeg_compress_struct cinfo;
png_structp png_ptr;
png_infop png_info_ptr;
char *jpgname = NULL;
char *pngname = NULL;
if (png_flag) {
asfPrintStatus("Generating debug image (PNG)...\n");
pngname = appendExt(outname, ".png");
initialize_png_file(pngname,meta,&ofp,&png_ptr,&png_info_ptr,TRUE);
}
else {
asfPrintStatus("Generating debug image (JPEG)...\n");
jpgname = appendExt(outname, ".jpg");
initialize_jpeg_file(jpgname,meta,&ofp,&cinfo,TRUE);
}
// now read in the polar image, calculate RGB values, write to jpeg/png
for (i=0; i<nl; ++i) {
get_band_float_line(fp,meta,0,i,amp);
get_band_float_line(fp,meta,1,i,phase);
for (j=0; j<ns; ++j) {
// scale to 2-sigma, to get brightness of the pixel
unsigned char intensity;
//=(unsigned char)(amp[j] * 128./(float)avg * 41./255.);
if (amp[j]<=min)
intensity=0;
else if (amp[j]>=max)
intensity=255;
else
intensity=(unsigned char)((amp[j]-min)/(max-min)*255.);
// color of the pixel is determined by the phase
unsigned char r=0,g=0,b=0;
if (phase[j]<-PI) phase[j]+=TWOPI; // ensure [-PI, PI)
if (phase[j]>=PI) phase[j]-=TWOPI;
int range = (int)((phase[j]+PI)/PIOVER3); // will be 0-6 (and rarely 6)
switch (range) {
case 0: r=1; break;
case 1: r=1; g=1; break;
case 2: g=1; break;
case 3: g=1; b=1; break;
case 4: b=1; break;
case 5: r=1; b=1; break;
case 6: break; // left black
default:
printf("phase: %f, range: %d\n", phase[j], range);
assert(FALSE); break;
}
red[j] = r*intensity;
grn[j] = g*intensity;
blu[j] = b*intensity;
}
// write the line
if (png_flag)
write_rgb_png_byte2byte(ofp,red,grn,blu,png_ptr,png_info_ptr,ns);
else
write_rgb_jpeg_byte2byte(ofp,red,grn,blu,&cinfo,ns);
// keep the user interested!
asfPercentMeter((float)i/((float)nl));
}
asfPercentMeter(1.0);
// clean up
FCLOSE(fp);
FREE(amp);
FREE(phase);
FREE(red);
FREE(grn);
FREE(blu);
meta_free(meta);
if (png_flag)
finalize_png_file(ofp,png_ptr,png_info_ptr);
else
finalize_jpeg_file(ofp,&cinfo);
FREE(jpgname);
FREE(pngname);
clean(polar_name);
FREE(polar_name);
}
void calc_minmax_median(const char *inFile, char *band, double mask,
double *min, double *max)
{
long long ii, jj;
float logeps = 10.0 * log10(EPSILON);
float median, median0;
meta_parameters *meta = meta_read(inFile);
int band_number =
(!band || strlen(band) == 0 || strcmp(band, "???") == 0) ? 0 :
get_band_number(meta->general->bands, meta->general->band_count, band);
long sample_count = meta->general->sample_count;
long line_count = meta->general->line_count;
long pixel_count = sample_count*line_count;
long offset = line_count * band_number;
float *data_line = MALLOC(sizeof(float) * sample_count);
float *data = MALLOC(sizeof(float) * pixel_count);
float *data2 = MALLOC(sizeof(float) * pixel_count);
// Culling invalid pixels
FILE *fp = FOPEN(inFile, "rb");
long valid_pixel_count = 0;
asfPrintStatus("\nCalculating min and max using median...\n");
for (ii=0; ii<line_count; ++ii) {
get_float_line(fp, meta, ii + offset, data_line);
asfPercentMeter(((double)ii/(double)line_count));
for (jj=0; jj<sample_count; ++jj) {
if (!FLOAT_EQUIVALENT(data_line[jj], -9999.99) ||
!FLOAT_EQUIVALENT(data_line[jj], logeps) ||
ISNAN(mask)) {
data[valid_pixel_count] = data_line[jj];
valid_pixel_count++;
}
}
}
asfPercentMeter(1.0);
FCLOSE(fp);
FREE(data_line);
// Determine initial min and max
*min = INIT_MINMAX;
*max = -INIT_MINMAX;
float minmin = INIT_MINMAX;
float maxmax = -INIT_MINMAX;
for (ii=0; ii<valid_pixel_count; ++ii) {
data2[ii] = data[ii];
if (data[ii] < minmin)
minmin = data[ii];
if (data[ii] > maxmax)
maxmax = data[ii];
}
median0 = median_value(data, valid_pixel_count);
// Determine minimum
median = median0;
*min = median0;
for (ii=0; ii<3; ii++) {
pixel_count = -1;
for (jj=0; jj<valid_pixel_count; ++jj)
if (median0 == minmin) {
if (data[jj] <= median) {
pixel_count++;
data2[pixel_count] = data[jj];
}
}
else {
if (data[jj] < median) {
pixel_count++;
data2[pixel_count] = data[jj];
}
}
median = median_value(data2, pixel_count);
if (median == minmin)
median = *min;
*min = median;
}
// Determine maximum
median = median0;
*max = median0;
for (ii=0; ii<3; ii++) {
pixel_count = -1;
for (jj=0; jj<valid_pixel_count; ++jj)
if (median0 == maxmax) {
if (data[jj] >= median) {
pixel_count++;
data2[pixel_count] = data[jj];
}
}
else {
if (data[jj] > median) {
pixel_count++;
data2[pixel_count] = data[jj];
}
}
median = median_value(data2, pixel_count);
if (median == maxmax)
median = *max;
*max = median;
}
FREE(data);
FREE(data2);
}
void
calc_stats_rmse_from_file(const char *inFile, char *band, double mask,
double *min, double *max, double *mean,
double *stdDev, double *rmse,
gsl_histogram **histogram)
{
double se;
int ii,jj;
*min = 999999;
*max = -999999;
*mean = 0.0;
meta_parameters *meta = meta_read(inFile);
int band_number =
(!band || strlen(band) == 0 || strcmp(band, "???") == 0) ? 0 :
get_band_number(meta->general->bands, meta->general->band_count, band);
long offset = meta->general->line_count * band_number;
float *data = MALLOC(sizeof(float) * meta->general->sample_count);
// pass 1 -- calculate mean, min & max
FILE *fp = FOPEN(inFile, "rb");
long long pixel_count=0;
asfPrintStatus("\nCalculating min, max, and mean...\n");
for (ii=0; ii<meta->general->line_count; ++ii) {
asfPercentMeter(((double)ii/(double)meta->general->line_count));
get_float_line(fp, meta, ii + offset, data);
for (jj=0; jj<meta->general->sample_count; ++jj) {
if (ISNAN(mask) || !FLOAT_EQUIVALENT(data[jj], mask)) {
if (data[jj] < *min) *min = data[jj];
if (data[jj] > *max) *max = data[jj];
*mean += data[jj];
++pixel_count;
}
}
}
asfPercentMeter(1.0);
FCLOSE(fp);
*mean /= pixel_count;
// Guard against weird data
if(!(*min<*max)) *max = *min + 1;
// Initialize the histogram.
const int num_bins = 256;
gsl_histogram *hist = gsl_histogram_alloc (num_bins);
gsl_histogram_set_ranges_uniform (hist, *min, *max);
*stdDev = 0.0;
// pass 2 -- update histogram, calculate standard deviation
fp = FOPEN(inFile, "rb");
asfPrintStatus("\nCalculating standard deviation, rmse, and histogram...\n");
se = 0.0;
for (ii=0; ii<meta->general->line_count; ++ii) {
asfPercentMeter(((double)ii/(double)meta->general->line_count));
get_float_line(fp, meta, ii + offset, data);
for (jj=0; jj<meta->general->sample_count; ++jj) {
if (ISNAN(mask) || !FLOAT_EQUIVALENT(data[jj], mask)) {
*stdDev += (data[jj] - *mean) * (data[jj] - *mean);
gsl_histogram_increment (hist, data[jj]);
se += (data[jj] - *mean) * (data[jj] - *mean);
}
}
}
asfPercentMeter(1.0);
FCLOSE(fp);
*stdDev = sqrt(*stdDev/(pixel_count - 1));
*rmse = sqrt(se/(pixel_count - 1));
FREE(data);
*histogram = hist;
}
void
calc_stats_from_file_with_formula(const char *inFile, char *bands,
calc_stats_formula_t formula_callback,
double mask, double *min, double *max,
double *mean, double *stdDev,
gsl_histogram **histogram)
{
int ii,jj,kk;
const int N=MAX_BANDS;
*min = 999999;
*max = -999999;
*mean = 0.0;
meta_parameters *meta = meta_read(inFile);
int band_numbers[N];
for (ii=0; ii<N; ++ii)
band_numbers[ii] = -1;
int band_count = 0;
if (bands) {
char *s = STRDUP(bands); // a copy we can fiddle with
char *q, *p = s;
do {
q = strchr(p, ',');
if (q)
*q = '\0';
if (strlen(p) > 0 && strcmp(p, "???") != 0) {
band_numbers[band_count] = get_band_number(meta->general->bands,
meta->general->band_count, p);
//printf("%s -> %d\n", p, band_numbers[band_count]);
++band_count;
}
if (q)
p = q+1;
} while (q);
FREE(s);
}
long band_offsets[N];
float *band_data[N];
for (ii=0; ii<N; ++ii) {
if (band_numbers[ii] >= 0) {
band_offsets[ii] = meta->general->line_count * band_numbers[ii];
band_data[ii] = MALLOC(sizeof(float)*meta->general->sample_count);
}
else {
band_offsets[ii] = -1;
band_data[ii] = NULL;
}
}
// pass 1 -- calculate mean, min & max
FILE *fp = FOPEN(inFile, "rb");
long long pixel_count=0;
asfPrintStatus("\nCalculating min, max, and mean...\n");
for (ii=0; ii<meta->general->line_count; ++ii) {
asfPercentMeter((double)ii/(double)meta->general->line_count);
for (kk=0; kk<N; ++kk) {
if (band_data[kk]) {
assert(band_offsets[kk] >= 0);
get_float_line(fp, meta, ii + band_offsets[kk], band_data[kk]);
}
}
for (jj=0; jj<meta->general->sample_count; ++jj) {
int is_masked = FALSE;
if (ISNAN(mask)) {
for (kk=0; kk<N; ++kk)
if (band_data[kk] && FLOAT_EQUIVALENT(band_data[kk][jj], mask))
is_masked = TRUE;
}
if (!is_masked) {
double data_arr[N];
int ll;
for (ll=0, kk=0; kk<N; ++kk)
if (band_data[kk])
data_arr[ll++] = band_data[kk][jj];
assert(ll==band_count);
double val = formula_callback(data_arr, mask);
if (val < *min) *min = val;
if (val > *max) *max = val;
*mean += val;
++pixel_count;
}
}
}
asfPercentMeter(1.0);
FCLOSE(fp);
*mean /= pixel_count;
// Guard against weird data
if(!(*min<*max)) *max = *min + 1;
// Initialize the histogram.
const int num_bins = 256;
gsl_histogram *hist = gsl_histogram_alloc (num_bins);
gsl_histogram_set_ranges_uniform (hist, *min, *max);
*stdDev = 0.0;
// pass 2 -- update histogram, calculate standard deviation
fp = FOPEN(inFile, "rb");
asfPrintStatus("\nCalculating standard deviation and histogram...\n");
for (ii=0; ii<meta->general->line_count; ++ii) {
asfPercentMeter((double)ii/(double)meta->general->line_count);
for (kk=0; kk<N; ++kk) {
if (band_data[kk]) {
assert(band_offsets[kk] >= 0);
get_float_line(fp, meta, ii + band_offsets[kk], band_data[kk]);
}
}
for (jj=0; jj<meta->general->sample_count; ++jj) {
int is_masked = FALSE;
if (ISNAN(mask)) {
for (kk=0; kk<N; ++kk)
if (band_data[kk] && FLOAT_EQUIVALENT(band_data[kk][jj], mask))
is_masked = TRUE;
}
if (!is_masked) {
double data_arr[N];
int ll;
for (ll=0, kk=0; kk<N; ++kk)
if (band_data[kk])
data_arr[ll++] = band_data[kk][jj];
assert(ll==band_count);
double val = formula_callback(data_arr, mask);
*stdDev += (val - *mean) * (val - *mean);
gsl_histogram_increment (hist, val);
}
}
}
asfPercentMeter(1.0);
FCLOSE(fp);
*stdDev = sqrt(*stdDev/(pixel_count - 1));
for (ii=0; ii<N; ++ii)
if (band_data[ii])
FREE(band_data[ii]);
*histogram = hist;
}
void c2p_ext(const char *inDataName, const char *inMetaName,
const char *outfile, int multilook, int banded)
{
meta_parameters *in_meta = meta_read(inMetaName);
int data_type = in_meta->general->data_type;
// the old code did this, but why??
in_meta->general->data_type = meta_polar2complex(data_type);
// some sanity checks
switch (data_type) {
case COMPLEX_BYTE:
case COMPLEX_INTEGER16:
case COMPLEX_INTEGER32:
case COMPLEX_REAL32:
case COMPLEX_REAL64:
break;
default:
asfPrintError("c2p: %s is not a complex image.\n", inDataName);
}
if (in_meta->general->band_count != 1)
asfPrintError("c2p: %s is not a single-band image.\n", inDataName);
if (!in_meta->sar)
asfPrintError("c2p: %s is missing a SAR block.\n", inDataName);
asfPrintStatus("Converting complex image to amplitude/phase...\n");
int nl = in_meta->general->line_count;
int ns = in_meta->general->sample_count;
// process 1 line at a time when not multilooking, otherwise grab nlooks
int nlooks = multilook ? in_meta->sar->look_count : 1;
if (nlooks == 1 && multilook) {
asfPrintStatus("Not multilooking, look_count is 1.\n");
multilook = FALSE;
}
if (multilook)
asfPrintStatus("Multilooking with %d looks.\n", nlooks);
meta_parameters *out_meta = meta_read(inMetaName);
out_meta->general->data_type = meta_complex2polar(data_type);
// set up input/output files
FILE *fin = fopenImage(inDataName, "rb");
// we either have 1 or 2 output files, per the "banded" flag.
char *outfile_img = appendExt(outfile, ".img");
char *amp_name=NULL, *phase_name=NULL;
FILE *fout_banded=NULL, *fout_amp=NULL, *fout_phase=NULL;
if (banded) {
asfPrintStatus("Output is 2-band image: %s\n", outfile_img);
fout_banded = fopenImage(outfile_img, "wb");
} else {
amp_name = appendToBasename(outfile_img, "_amp");
phase_name = appendToBasename(outfile_img, "_phase");
asfPrintStatus("Output amplitude file: %s\n", amp_name);
asfPrintStatus("Output phase file: %s\n", phase_name);
fout_amp = fopenImage(amp_name, "wb");
fout_phase = fopenImage(phase_name, "wb");
}
if (banded)
assert(fout_banded && !fout_amp && !fout_phase);
else
assert(!fout_banded && fout_amp && fout_phase);
// get the metadata band_count correct, needed in the put_* calls
if (banded) {
out_meta->general->band_count = 2;
strcpy(out_meta->general->bands, "AMP,PHASE");
}
// input buffer
complexFloat *cpx = MALLOC(sizeof(complexFloat)*ns*nlooks);
// output buffers
float *amp = MALLOC(sizeof(float)*ns*nlooks);
float *phase = MALLOC(sizeof(float)*ns*nlooks);
int line_in; // line in the input image
int line_out=0; // line in the output image
int samp; // sample #, loop index
int l; // line loop index, iterates over the lines in the block
out_meta->general->line_count = (int)ceil((double)nl/(double)nlooks);
for (line_in=0; line_in<nl; line_in+=nlooks)
{
// lc = "line count" -- how many lines to read. normally we will read
// nlooks lines, but near eof we might have to read fewer
int lc = nlooks;
if (line_in + lc > nl)
lc = nl - line_in;
// read "nlooks" (or possibly fewer, if near eof) lines of data
int blockSize = get_complexFloat_lines(fin,in_meta,line_in,lc,cpx);
if (blockSize != lc*ns)
asfPrintError("bad blockSize: bs=%d nlooks=%d ns=%d\n",
blockSize, nlooks, ns);
// first, compute the power/phase
for (l=0; l<lc; ++l) {
for (samp=0; samp<ns; ++samp) {
int k = l*ns + samp; // index into the block
float re = cpx[k].real;
float im = cpx[k].imag;
if (re != 0.0 || im != 0.0) {
amp[k] = re*re + im*im;
phase[k] = atan2(im, re);
} else {
amp[k] = phase[k] = 0.0;
}
}
}
// now multilook, if requested
if (multilook) {
// put the multilooked data in the first "row" of amp,phase
for (samp=0; samp<ns; ++samp) {
float value = 0.0;
for (l=0; l<lc; ++l)
value += amp[l*ns + samp];
amp[samp] = sqrt(value/(float)lc);
value = 0.0;
for (l=0; l<lc; ++l)
value += phase[l*ns + samp];
phase[samp] = value/(float)lc;
}
}
else {
for (samp=0; samp<ns*lc; ++samp)
amp[samp] = sqrt(amp[samp]);
}
// write out a line (multilooked) or a bunch of lines (not multi)
if (multilook) {
if (banded) {
put_band_float_line(fout_banded, out_meta, 0, line_out, amp);
put_band_float_line(fout_banded, out_meta, 1, line_out, phase);
} else {
put_float_line(fout_amp, out_meta, line_out, amp);
put_float_line(fout_phase, out_meta, line_out, phase);
}
++line_out;
} else {
for (l=0; l<lc; ++l) {
if (banded) {
put_band_float_line(fout_banded, out_meta, 0, line_in+l, amp);
put_band_float_line(fout_banded, out_meta, 1, line_in+l, phase);
} else {
put_float_line(fout_amp, out_meta, line_in+l, amp);
put_float_line(fout_phase, out_meta, line_in+l, phase);
}
++line_out;
}
}
asfPercentMeter((float)line_in/(float)(nl));
}
asfPercentMeter(1.0);
fclose(fin);
if (fout_banded) fclose(fout_banded);
if (fout_amp) fclose(fout_amp);
if (fout_phase) fclose(fout_phase);
if (multilook) {
if (out_meta->general->line_count != line_out)
asfPrintError("Line counts don't match: %d != %d\n",
out_meta->general->line_count, line_out);
out_meta->general->y_pixel_size *= nlooks;
out_meta->sar->azimuth_time_per_pixel *= nlooks;
out_meta->sar->multilook = TRUE;
} else
assert(line_out == nl);
// write out the metadata, different whether multi-banded or not
if (banded) {
assert(!amp_name && !phase_name);
meta_write(out_meta, outfile);
} else {
assert(amp_name && phase_name);
out_meta->general->image_data_type = AMPLITUDE_IMAGE;
meta_write(out_meta, amp_name);
out_meta->general->image_data_type = PHASE_IMAGE;
meta_write(out_meta, phase_name);
}
if (multilook)
asfPrintStatus("Original line count: %d, after multilooking: %d "
"(%d looks)\n", nl, line_out, nlooks);
meta_free(in_meta);
meta_free(out_meta);
FREE(amp);
FREE(phase);
FREE(cpx);
FREE(outfile_img);
FREE(amp_name);
FREE(phase_name);
}
int plan(const char *satellite, const char *beam_mode, double look_angle,
long startdate, long enddate, double min_lat, double max_lat,
double clat, double clon, int pass_type,
int zone, Poly *aoi, const char *tle_filename,
PassCollection **pc_out, char **errorstring)
{
BeamModeInfo *bmi = get_beam_mode_info(satellite, beam_mode);
if (!bmi) {
*errorstring = STRDUP("Unknown satellite/beam mode combination.\n");
return -1;
}
// Convert the input start/end times from longdates (dates as long ints)
// to seconds from some reference time. (midnight jan 1, 1900)
// We add a day to the end date, so that the passed-in range is inclusive
double start_secs = seconds_from_long(startdate);
double end_secs = seconds_from_long(add_a_day(enddate));
sat_t sat;
read_tle(tle_filename, satellite, &sat);
// if the planned acquisition period is further away than this amount,
// we subtract multiples of the repeat cyle time until we are within
// this threshold time of this tle
double tle_time =
time_to_secs(sat.tle.epoch_year, sat.tle.epoch_day, sat.tle.epoch_fod);
// FIXME this is alos specific FIXME!!
// should really read this out of a config file... or calculate it
// from the TLE info?
const double repeat_days = 46;
const double orbits_per_cycle = 671;
// repeat time, in seconds, all time references are in seconds
double repeat_cycle_time = repeat_days * 24.*60.*60.;
// how many days to pad the repeat cycle time, before modding the
// start/end time
const double days_of_padding = 5;
// this is the cutoff,
double threshold = repeat_cycle_time + 24*60*60 * days_of_padding;
int cycles_adjustment=0;
if (start_secs-tle_time > threshold) {
while (start_secs-tle_time > threshold) {
start_secs -= repeat_cycle_time;
end_secs -= repeat_cycle_time;
++cycles_adjustment;
}
}
else if (tle_time-start_secs > threshold) { // planning backwards...
while (tle_time-start_secs > threshold) {
start_secs += repeat_cycle_time;
end_secs += repeat_cycle_time;
--cycles_adjustment;
}
}
double time_adjustment = cycles_adjustment*repeat_cycle_time;
if (cycles_adjustment != 0)
asfPrintStatus("Adjusted start/end times %s by %d repeat cycle%s.\n",
cycles_adjustment > 0 ? "forward" : "backward",
cycles_adjustment > 0 ? cycles_adjustment : -cycles_adjustment,
cycles_adjustment == 1 || cycles_adjustment == -1 ? "" : "s");
// no deep space orbits can be planned
assert((sat.flags & DEEP_SPACE_EPHEM_FLAG) == 0);
if (is_utm(zone)) {
asfPrintStatus("Target: UTM zone %d\n"
" (%10.2f, %10.2f) (%10.2f, %10.2f)\n"
" (%10.2f, %10.2f) (%10.2f, %10.2f)\n",
zone,
aoi->x[0], aoi->y[0],
aoi->x[1], aoi->y[1],
aoi->x[2], aoi->y[2],
aoi->x[3], aoi->y[3]);
}
else {
asfPrintStatus("Target: Polar Stereo %s\n"
" (%10.2f, %10.2f) (%10.2f, %10.2f)\n"
" (%10.2f, %10.2f) (%10.2f, %10.2f)\n",
zone>0 ? "North" : "South",
aoi->x[0], aoi->y[0],
aoi->x[1], aoi->y[1],
aoi->x[2], aoi->y[2],
aoi->x[3], aoi->y[3]);
}
double curr = start_secs;
double incr = bmi->image_time;
stateVector st = tle_propagate(&sat, start_secs-incr);
double lat_prev = sat.ssplat;
int i,num_found = 0;
//
// Calculate the number of frames to include before we hit the
// area of interest. Add 1 (i.e., round up), but if user puts in
// zero seconds, then we want 0 lead-up frames.
PassCollection *pc = pass_collection_new(clat, clon, aoi);
asfPrintStatus("Searching...\n");
while (curr < end_secs) {
st = tle_propagate(&sat, curr);
char dir = sat.ssplat > lat_prev ? 'A' : 'D';
if ((dir=='A' && pass_type!=DESCENDING_ONLY) ||
(dir=='D' && pass_type!=ASCENDING_ONLY))
{
OverlapInfo *oi =
overlap(curr, &st, bmi, look_angle, zone, clat, clon, aoi);
if (oi) {
int n=0;
// Calculate the orbit number -- we have to fudge this if we
// modded the start time.
int orbit_num = sat.orbit + orbits_per_cycle*cycles_adjustment;
// This is an alternate way of calculating the orbit number that
// was being used during testing... seems to produce numbers close
// to (within 1) of the number obtained by sgpsdp...
//double secs_per_orbit = repeat_cycle_time / orbits_per_cycle;
// ALOS was launced on 1/24/06
//double launch_secs = seconds_from_long(20060124);
//double orbit_num2 = (curr - launch_secs) / secs_per_orbit;
//orbit_num2 += orbits_per_cycle*cycles_adjustment;
//printf("%f %f %f\n", orbit_num + sat.orbit_part,
// orbit_num2, orbit_num+sat.orbit_part-orbit_num2);
// UPDATE!! All this orbit number calculation business doesn't get
// used for ALOS planning -- orbit number is re-calculated using
// time since a refrence orbit.
// See planner.c -- get_alos_orbit_number_at_time()
PassInfo *pass_info = pass_info_new(orbit_num, sat.orbit_part, dir);
double start_time = curr - bmi->num_buffer_frames*incr;
// add on the buffer frames before the area of interest
for (i=bmi->num_buffer_frames; i>0; --i) {
double t = curr - i*incr;
stateVector st1 = tle_propagate(&sat, t);
double rclat, rclon; // viewable region center lat/lon
Poly *region = get_viewable_region(&st1, bmi, look_angle,
zone, clat, clon, &rclat, &rclon);
if (region) {
OverlapInfo *oi1 = overlap_new(0, 1000, region, zone, clat, clon,
&st1, t);
pass_info_add(pass_info, t+time_adjustment, oi1);
if (pass_info->start_lat == -999) {
// at the first valid buffer frame -- set starting latitude
double start_lat, end_lat;
get_latitude_range(region, zone, dir, &start_lat, &end_lat);
pass_info_set_start_latitude(pass_info, start_lat);
}
}
}
// add the frames that actually image the area of interest
while (curr < end_secs && oi) {
pass_info_add(pass_info, curr+time_adjustment, oi);
++n;
curr += incr;
st = tle_propagate(&sat, curr);
oi = overlap(curr, &st, bmi, look_angle, zone, clat, clon, aoi);
}
double end_time = curr + (bmi->num_buffer_frames-1)*incr;
pass_info_set_duration(pass_info, end_time-start_time);
// add on the buffer frames after the area of interest
for (i=0; i<bmi->num_buffer_frames; ++i) {
double t = curr + i*incr;
stateVector st1 = tle_propagate(&sat, t);
double rclat, rclon; // viewable region center lat/lon
Poly *region = get_viewable_region(&st1, bmi, look_angle,
zone, clat, clon, &rclat, &rclon);
if (region) {
OverlapInfo *oi1 = overlap_new(0, 1000, region, zone, clat, clon,
&st1, t);
pass_info_add(pass_info, t+time_adjustment, oi1);
// set stopping latitude -- each frame overwrites the previous,
// so the last valid frame will set the stopping latitude
double start_lat, end_lat;
get_latitude_range(region, zone, dir, &start_lat, &end_lat);
pass_info_set_stop_latitude(pass_info, end_lat);
}
}
// make sure we set all the required "after the fact" info
// if not, then do not add the pass... must be invalid
// (these used to be asserts, so it doesn't seem to ever happen)
if (n>0 &&
pass_info->start_lat != -999 &&
pass_info->stop_lat != -999 &&
pass_info->duration != -999)
{
// add the pass!
pass_collection_add(pc, pass_info);
++num_found;
}
else
{
asfPrintStatus("Invalid pass found. Skipped... \n"
" -- number of frames: %d, dir: %c\n"
" -- date: %s, orbit %d, %f\n --> (%f,%f,%f)\n",
n, pass_info->dir,
pass_info->start_time_as_string,
pass_info->orbit, pass_info->orbit_part,
pass_info->start_lat, pass_info->stop_lat,
pass_info->duration);
}
}
}
curr += incr;
lat_prev = sat.ssplat;
//printf("Lat: %f, Orbit: %d, Orbit Part: %f\n", sat.ssplat,
// (int)sat.orbit, sat.orbit_part);
asfPercentMeter((curr-start_secs)/(end_secs-start_secs));
}
asfPercentMeter(1.0);
*pc_out = pc;
return num_found;
}