#include <math.h>
#include <float.h>
#include <cpl.h>
#include "xsh_spectrum.h"
#include "xsh_utils_wrappers.h"

Macros
#define	SPECTRUM_HW 16

#define	MIN_THRESH_FACT 0.9

#define	MAX_THRESH_FACT 1.1

#define	SPEC_SHADOW_FACT 30.0 /* Negative spectrum intensity*/

#define	SPEC_MAXWIDTH 48

Functions
static int	select_valid_spectra (cpl_image in, cpl_apertures aperts, int offset, spec_shadows shadows, int max_spec_width, int n_valid_specs, int *valid_specs)
	Selects the valid spectra in a spectral image.

static int	valid_spectrum (cpl_image in, cpl_apertures aperts, int offset, spec_shadows shadows, int max_spec_width, int objnum)
	Helper function to select_valid_spectra.

int	xsh_spectrum_find_brightest (const cpl_image in, int offset, spec_shadows shadows, double min_bright, int orient, double pos)
	Finds the brightest spectrum in an image.

cpl_vector *	xsh_spectrum_detect_peaks (const cpl_vector *in, int fwhm, double kappa, int display)
	Detect the brightest features in a spectrum.

Macro Definition Documentation

◆ MAX_THRESH_FACT

#define MAX_THRESH_FACT 1.1

Definition at line 49 of file xsh_spectrum.c.

◆ MIN_THRESH_FACT

#define MIN_THRESH_FACT 0.9

Definition at line 48 of file xsh_spectrum.c.

◆ SPEC_MAXWIDTH

#define SPEC_MAXWIDTH 48

Definition at line 51 of file xsh_spectrum.c.

◆ SPEC_SHADOW_FACT

#define SPEC_SHADOW_FACT 30.0 /* Negative spectrum intensity*/

Definition at line 50 of file xsh_spectrum.c.

◆ SPECTRUM_HW

#define SPECTRUM_HW 16

Definition at line 47 of file xsh_spectrum.c.

Function Documentation

◆ select_valid_spectra()

static int select_valid_spectra	(	cpl_image *	in,
		cpl_apertures *	aperts,
		int	offset,
		spec_shadows	shadows,
		int	max_spec_width,
		int *	n_valid_specs,
		int **	valid_specs
	)

static

Selects the valid spectra in a spectral image.

Parameters

in	the 1d image
aperts	detected objects
offset	the distance to the two shadows of the bright spectrum
shadows	shadows mode
max_spec_width	maximal spectrum width
n_valid_specs	number of valid spectra
valid_specs	lut giving the object number of a found spectrum

Returns: 0 if ok, -1 in error case

Definition at line 412 of file xsh_spectrum.c.

References valid_spectrum().

Referenced by xsh_spectrum_find_brightest().

◆ valid_spectrum()

static int valid_spectrum	(	cpl_image *	in,
		cpl_apertures *	aperts,
		int	offset,
		spec_shadows	shadows,
		int	max_spec_width,
		int	objnum
	)

static

Helper function to select_valid_spectra.

Parameters

in	the 1d image
aperts	detected objects
offset	the distance to the two shadows of the bright spectrum
shadows	shadows mode
max_spec_width	maximal spectrum width
objnum	index of the object to test (1 for the first)

Returns: 1 if valid 0 if not

Definition at line 465 of file xsh_spectrum.c.

References NO_SHADOW, ONE_SHADOW, SPEC_SHADOW_FACT, and TWO_SHADOWS.

Referenced by select_valid_spectra().

Macros

Functions