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/*
profit.h
*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
*
* Part of: SExtractor
*
* Authors: E.BERTIN (IAP)
*
* Contents: Include file for profit.c.
*
* Last modify: 18/03/2009
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*
*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
*/
#ifndef _PROFIT_H_
#define _PROFIT_H_
/*-------------------------------- flags ------------------------------------*/
#define PROFIT_FLIPPED 0x0001
/*-------------------------------- macros -----------------------------------*/
#define PROFIT_POW(x,a) (x>0.01? exp(a*log(x)) : pow(x,a))
#define PROFIT_POWF(x,a) (x>0.01? expf(a*logf(x)) : powf(x,a))
/*----------------------------- Internal constants --------------------------*/
#define PROFIT_MAXITER 1000 /* Max. nb of iterations in profile fitting */
#define PROFIT_OVERSAMP 5 /* Max. profile oversamp. factor on each axis */
#define PROFIT_MAXPROF 8 /* Max. nb of profile components */
#define PROFIT_DYNPARAM 100.0 /* Dynamic compression param. in sigma units */
#define PROFIT_BARXFADE 0.1 /* Fract. of bar length crossfaded with arms */
#define PROFIT_MAXEXTRA 2 /* Max. nb of extra free params of profiles */
#define PROFIT_PROFRES 256 /* Pixmap size of model components */
#define PROFIT_PROFSRES 64 /* Number of model subcomponents */
#define INTERP_MAXKERNELWIDTH 8 /* Max. range of kernel (pixels) */
/* NOTES:
One must have: PROFIT_NITER > 0
PROFIT_MAXEXTRA > 0
*/
/*--------------------------------- typedefs --------------------------------*/
typedef enum {PROF_BACK, PROF_SERSIC, PROF_DEVAUCOULEURS,
PROF_EXPONENTIAL, PROF_ARMS, PROF_BAR, PROF_INRING,
PROF_OUTRING, PROF_SERSIC_TABEX, PROF_DIRAC, PROF_NPROF}
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proftypenum; /* Profile code */
typedef enum {INTERP_NEARESTNEIGHBOUR, INTERP_BILINEAR, INTERP_LANCZOS2,
INTERP_LANCZOS3, INTERP_LANCZOS4} interpenum;
typedef enum {PARAM_BACK, PARAM_X, PARAM_Y,
PARAM_SPHEROID_FLUX, PARAM_SPHEROID_REFF, PARAM_SPHEROID_ASPECT,
PARAM_SPHEROID_POSANG, PARAM_SPHEROID_SERSICN,
PARAM_DISK_FLUX, PARAM_DISK_SCALE, PARAM_DISK_ASPECT,
PARAM_DISK_POSANG,
PARAM_ARMS_FLUX, PARAM_ARMS_QUADFRAC, PARAM_ARMS_SCALE,
PARAM_ARMS_START, PARAM_ARMS_POSANG, PARAM_ARMS_PITCH,
PARAM_ARMS_PITCHVAR, PARAM_ARMS_WIDTH,
PARAM_BAR_FLUX, PARAM_BAR_ASPECT, PARAM_BAR_POSANG,
PARAM_INRING_FLUX, PARAM_INRING_WIDTH, PARAM_INRING_ASPECT,
PARAM_OUTRING_FLUX, PARAM_OUTRING_START, PARAM_OUTRING_WIDTH,
PARAM_NPARAM} paramenum;
/*--------------------------- structure definitions -------------------------*/
typedef struct
{
proftypenum code; /* Model code */
double *pix; /* Full pixmap of the model */
int naxis; /* Number of pixmap dimensions */
int naxisn[3]; /* Pixmap size for each axis */
double typscale; /* Typical scale in prof pixels */
double fluxfac; /* Flux normalisation factor */
/* Generic presentation parameters */
double *flux; /* Integrated flux */
double *x[2]; /* Coordinate vector */
double *scale; /* Scaling vector */
double *aspect; /* Aspect ratio */
double *posangle; /* Position angle (CCW/NAXIS1)*/
double *featfrac; /* Feature flux fraction */
double *featscale; /* Feature relative scalelength */
double *featstart; /* Feature relative starting radius */
double *featposang; /* Feature position angle */
double *featpitch; /* Feature pitch */
double *featpitchvar; /* Feature pitch variation */
double *featwidth; /* Feature width */
double *feataspect; /* Feature aspect ratio */
double *extra[PROFIT_MAXEXTRA];/* Parameters along extra-dimension */
double extrazero[PROFIT_MAXEXTRA]; /* Zero-point along extra-dim. */
double extrascale[PROFIT_MAXEXTRA]; /* Scaling along extra-dim. */
int extracycleflag[PROFIT_MAXEXTRA]; /* !=0 for cycling dim. */
interpenum interptype[2+PROFIT_MAXEXTRA]; /* Interpolation type */
int kernelwidth[2+PROFIT_MAXEXTRA]; /* Kernel size */
double *kernelbuf; /* Kernel buffer */
int kernelnlines; /* Number of interp kernel lines */
} profstruct;
typedef struct
{
objstruct *obj; /* Current object */
obj2struct *obj2; /* Current object */
int nparam; /* Number of parameters to be fitted */
double *paramlist[PARAM_NPARAM]; /* flat parameter list */
int paramindex[PARAM_NPARAM];/* Vector of parameter indices */
double param[PARAM_NPARAM]; /* Vector of parameters to be fitted */
double paraminit[PARAM_NPARAM];/* Parameter initial guesses */
double parammin[PARAM_NPARAM]; /* Parameter lower limits */
double parammax[PARAM_NPARAM]; /* Parameter upper limits */
double *covar; /* Covariance matrix */
double paramerr[PARAM_NPARAM]; /* Std deviations of parameters */
int niter; /* Number of iterations */
profstruct **prof; /* Array of pointers to profiles */
int nprof; /* Number of profiles to consider */
struct psf *psf; /* PSF */
double pixstep; /* Model/PSF sampling step */
double *psfdft; /* Compressed Fourier Transform of the PSF */
double *psfpix; /* Full res. pixmap of the PSF */
double *modpix; /* Full res. pixmap of the complete model */
float *pmodpix; /* Full res. pixmap of the partial model */
int modnaxisn[3]; /* Dimensions along each axis */
PIXTYPE *lmodpix; /* Low resolution pixmap of the model */
PIXTYPE *objpix; /* Copy of object pixmap */
PIXTYPE *objweight; /* Copy of object weight-map */
int objnaxisn[2]; /* Dimensions along each axis */
int ix, iy; /* Integer coordinates of object pixmap */
double *resi; /* Vector of residuals */
int nresi; /* Number of residual elements */
double chi2; /* Std error per residual element */
double sigma; /* Standard deviation of the pixel values */
double flux; /* Total flux in final convolved model */
double spirindex; /* Spiral index (>0 for CCW) */
} profitstruct;
/*----------------------------- Global variables ----------------------------*/
/*-------------------------------- functions --------------------------------*/
profitstruct *profit_init(struct psf *psf);
profstruct *prof_init(profitstruct *profit, proftypenum profcode);
double *profit_compresi(profitstruct *profit, double *resi),
*profit_residuals(profitstruct *profit, picstruct *field,
picstruct *wfield, double *param, double *resi),
profit_spiralindex(profitstruct *profit);
int profit_copyobjpix(profitstruct *profit, picstruct *field,
picstruct *wfield),
profit_minimize(profitstruct *profit, int niter),
profit_setparam(profitstruct *profit, paramenum paramtype,
double param, double parammin, double parammax);
void prof_add(profstruct *prof, profitstruct *profit),
prof_end(profstruct *prof),
profit_addparam(profitstruct *profit, paramenum paramindex,
double **param),
profit_boundtounbound(profitstruct *profit, double *param),
profit_fit(profitstruct *profit,
picstruct *field, picstruct *wfield,
objstruct *obj, obj2struct *obj2),
profit_convolve(profitstruct *profit, double *modpix),
profit_covarunboundtobound(profitstruct *profit),
profit_end(profitstruct *profit),
profit_evaluate(double *par, double *fvec, int m, int n,
void *adata),
profit_makedft(profitstruct *profit),
profit_moments(profitstruct *profit),
profit_printout(int n_par, double* par, int m_dat, double* fvec,
void *data, int iflag, int iter, int nfev ),
profit_psf(profitstruct *profit),
profit_resample(profitstruct *profit, double *inpix,
PIXTYPE *outpix, double factor),
profit_resetparam(profitstruct *profit, paramenum paramtype),
profit_resetparams(profitstruct *profit),
profit_unboundtobound(profitstruct *profit, double *param);
#endif