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znote_label.cc
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znote_label.cc
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/**
* @file znote_label.cc
* @author Daniel Meliza <[email protected]>
* @date Mon Mar 1 13:38:31 2010
*
* Copyright C Daniel Meliza, Z Chi 2010. Licensed for use under Creative
* Commons Attribution-Noncommercial-Share Alike 3.0 United States
* License (http://creativecommons.org/licenses/by-nc-sa/3.0/us/).
*
*/
#include "common.hh"
#include "blitz_io.hh"
#include "mtm.hh"
#include "components.hh"
#include <getopt.h>
#include <iostream>
using namespace std;
static const string program_name = "znote_label";
static const string program_version = "1.2.0";
double spec_threshold = 0.5;
int nfft = 512;
int fft_shift = 10;
int ntapers = 5;
double nw = 3.5;
double f_nbhd_r = 200.0;
double t_nbhd_r = 2.0;
double min_area = 4000.0;
string file_name;
bool write_spec = false;
void
usage()
{
cout << program_name << " (version " << program_version << ")\n\n ";
cout << program_name << " [--nfft <i>] [--fftshift <i>] [--ntapers <i>] [--nw <f>]\n"
<< " [--thresh <f>] [--df <f>] [--dt <f>]\n"
<< " [--min-size <f>] [--spec] <input>\n" << endl;
cout << "<i> indicates an integer argument; <f> a float. See documentation for details\n"
<< "<input> can be either a sound file or a spectrogram.\n"
<< "Output is to <pcmfile>_labels.bin" << endl;
exit(-1);
}
void
parse_args(int argc, char **argv)
{
for (int i = 1; i < argc; i++) {
if (strncmp(argv[i], "--nfft",6)==0)
nfft = atoi(argv[++i]);
else if (strncmp(argv[i], "--fftshift",10)==0)
fft_shift = atoi(argv[++i]);
else if (strncmp(argv[i], "--ntapers",9)==0)
ntapers = atoi(argv[++i]);
else if (strncmp(argv[i], "--nw",4)==0)
nw = atof(argv[++i]);
else if (strncmp(argv[i], "--df", 4) == 0)
f_nbhd_r = atof(argv[++i]);
else if (strncmp(argv[i], "--dt", 4) == 0)
t_nbhd_r = atof(argv[++i]);
else if (strncmp(argv[i], "--min-size", 10) == 0)
min_area = atof(argv[++i]);
else if (strncmp(argv[i], "--thresh", 8) == 0)
spec_threshold = atof(argv[++i]);
else if (strncmp(argv[i], "--spec", 6) == 0)
write_spec = true;
else
file_name = string(argv[i]);
}
if (file_name.size() < 1) {
cerr << "Error: must supply a file for input..." << endl;
exit(-1);
}
}
int
main(int argc, char **argv) {
if (argc == 1)
usage();
parse_args(argc, argv);
dmatrix spec;
coord_list nbhd;
imatrix labels;
int freq_r, time_r, min_size;
string froot, fext;
cout << "* Program: " << program_name << endl
<< "* Version: " << program_version << endl
<< "* Input: " << file_name << endl;
if (splitext(file_name, froot, fext) < 0) {
cout << "* ERROR: Unable to determine input file type" << endl;
exit(-1);
}
if (fext!=".bin") {
timeseries<short> pcm(file_name);
cout << "* Samples: " << pcm.samples.size() << endl
<< "* Samplerate: " << pcm.samplerate << endl
<< "* Nfft: " << nfft << " samples" << endl
<< "* Shift: " << fft_shift << " samples" << endl
<< "* Tapers: " << ntapers << endl
<< "* Time-freq product: " << nw << endl
<< "* Minimum feature area: " << min_area * 0.001 << " kHz-ms " << endl;
spec.reference(mtmspec(pcm.samples, nfft, nw, ntapers, fft_shift));
freq_r = (int)(f_nbhd_r * nfft / pcm.samplerate);
time_r = (int)(t_nbhd_r * pcm.samplerate / fft_shift * .001);
min_size = (int)(min_area * nfft / fft_shift * .001);
if (write_spec)
write_bin(froot + "_spec.bin",spec);
}
else {
read_bin(file_name, spec);
freq_r = (int)(f_nbhd_r);
time_r = (int)(t_nbhd_r);
min_size = (int)min_area;
}\
cout << "* Spectrogram dimensions: [" << spec.rows() << " " << spec.cols() << "]" << endl;
imatrix tspec(spec.shape());
if (spec_threshold >= 1.0) {
cout << "* Feature threshold: " << spec_threshold << endl;
tspec = (blitz::log10(spec) > (spec_threshold / 10));
}
else {
cout << "* Relative threshold: " << spec_threshold << endl;
double abs_thresh = frac_thresh(spec, spec_threshold);
cout << "* Absolute threshold: " << log10(abs_thresh) * 10 << endl;
tspec = (spec > abs_thresh);
}
cout << "* Frequency search radius: " << freq_r << endl
<< "* Time search radius: " << time_r << endl;
ellipse_neighborhood(nbhd, freq_r, time_r);
clist_vector clist(matrix_cbranches(tspec, nbhd, labels));
cout << "* Extracted features: " << clist.size() << endl
<< "* Minimum size: " << min_size << endl
<< "------------------------------------" << endl
<< "feat\tpixels\trow\tcol" << endl;
clist_vector::const_iterator it = clist.begin();
for (int i = 0; it != clist.end(); it++, i++) {
blitz::RectDomain<2> fbounds = component_bounds(*it);
cout << i << "\t" << it->size() << "\t";
cout << fbounds.lbound(0) << "\t";
cout << fbounds.lbound(1) << "\t";
if (it->size() < min_size) {
delete_component(labels, *it);
cout << "dropped";
}
cout << endl;
}
renumber_components(labels);
cout << "------------------------------------" << endl
<< "* Total features: " << blitz::max(labels) << endl;
write_bin(froot + "_labels.bin",labels);
}