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/* $Id: vmdistmodels.h,v 1.2 2013-03-25 11:43:04 cgarcia Exp $
*
* This file is part of the VIMOS Pipeline
* Copyright (C) 2002-2004 European Southern Observatory
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
* $Author: cgarcia $
* $Date: 2013-03-25 11:43:04 $
* $Revision: 1.2 $
* $Name: not supported by cvs2svn $
*/
#ifndef VM_DISTMODELS_H
#define VM_DISTMODELS_H
#include <pilmacros.h>
#include <vmtable.h>
PIL_BEGIN_DECLS
/*
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
structure VimosDistModel1D
Description:
Structure containing the coefficients of a 1D distortion model:
f(x) = sum a_i (x-offset)^i
where i runs from 0 to order of the model
Layout:
int order Order of the model
double *coefs Array of length order with the coefficients of the
polynomial
double offset Offset term in polynomial
Updates:
13 Nov 98: Created (TAO)
18 Nov 98: Added offset term (TAO)
--------------------------------------------------------------------------------
*/
typedef struct _VM_DIST_MODEL_1D_
{
int order; /* Order of the polynomial of the model */
double *coefs; /* Array of length order+1 with the coefficients
of the polynomial */
double offset; /* Offset term in polynomial */
} VimosDistModel1D;
/*
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
structure VimosDistModel2D
Description:
Structure containing the coefficients of a 2D distortion model:
f(x,y) = sum a_ij (x-offsetX)^i (y-offsetY)^j
where i runs from 0 to orderX and j from 0 to orderY of the model
Layout:
int orderX Order of the model in X
int orderY Order of the model in Y
double **coefs Coefficients of the polynomial
double offsetX X offset term in polynomial
double offsetY Y offset term in polynomial
Updates:
13 Nov 98: Created (TAO)
18 Nov 98: Offset term added (TAO)
--------------------------------------------------------------------------------
*/
typedef struct _VM_DIST_MODEL_2D_
{
int orderX; /* Order of the polynomial of the model in X */
int orderY; /* Order of the polynomial of the model in Y */
double **coefs; /* Matrix with the coefficients of the polynomial */
double offsetX; /* X offset term in polynomial */
double offsetY; /* Y offset term in polynomial */
} VimosDistModel2D;
/*
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
structure VimosDistModelFull
Description:
Structure containing the coefficients of a full distortion model:
f(t; x,y) = sum A_i (t-offsetT)^i
with
A_i = sum a_i,jk (x-offsetX)^i (y-offsetY)^j.
i runs from 0 to orderPol, j from 0 to orderX and k from 0 to
order Y of the model. The models a_i,jk are stored as an array of
VimosDistModel2D
Layout:
int orderPol Order of the model polynomial (range of i)
int orderX Order of the model in X (range of j)
int orderY Order of the model in Y (range of k)
VimosDistModel2D *coefs Models for the coefficients a_i,jk
double offsetT t offset term in polynomial
double offsetX X offset term in polynomial
double offsetY Y offset term in polynomial
Updates:
13 Nov 98: Created (TAO)
18 Nov 98: Offset terms added (TAO)
--------------------------------------------------------------------------------
*/
typedef struct _VM_DIST_MODEL_FULL_
{
int orderPol;
int orderX;
int orderY;
VimosDistModel2D **coefs;
double offsetT;
double offsetX;
double offsetY;
} VimosDistModelFull;
/*
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
structure VimosGnomonic
Description:
Structure containing the coefficients of a Gnomonic projection
Layout:
double alpha0 RA of projection centre in radians!!
double delta0 Dec of projection centre in radians!!
double sina0 sin(alpha0)
double cosa0 cos(alpha0)
double sind0 sin(delta0)
double cosd0 cos(delta0)
Updates:
25 Feb 99: Created (TAO)
--------------------------------------------------------------------------------
*/
typedef struct _VM_GNOMONIC_
{
double alpha0;
double delta0;
double sina0;
double cosa0;
double sind0;
double cosd0;
} VimosGnomonic;
/*
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
VimosDistModel1D *newDistModel1D(const int order)
Description:
Allocates a new VimosDistModel1D of order order
Input:
const int order order of polynomial of the model
Return Value (succes):
Pointer to a newly allocated VimosDistModel1D structure. All coefficients
are initialized to 0.
Return Value (error):
NULL
Updates:
13 Jun 00: Return NULL on error instead of exiting (Maura)
24 Nov 98: Call exit(-1) on error
18 Nov 98: Offset term added (TAO)
13 Nov 98: Created (TAO)
--------------------------------------------------------------------------------
*/
VimosDistModel1D *newDistModel1D(const int order);
/*
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
VimosDistModel2D *newDistModel2D(const int orderX, const int orderY)
Description:
Allocates a new VimosDistModel2D of order orderX in X and orderY in Y
Input:
const int orderX maximum order of X terms of the model
const int orderY maximum order of Y terms of the model
Return Value (succes):
Pointer to a newly allocated VimosDistModel2D structure. All coefficients
are initialized to 0.
Return Value (error):
NULL
Updates:
13 Jun 00: Return NULL on error instead of exiting (Maura)
24 Nov 98: Call exit(-1) on error
18 Nov 98: Offset terms added
13 Nov 98: Created (TAO)
--------------------------------------------------------------------------------
*/
VimosDistModel2D *newDistModel2D(const int orderX, const int orderY);
/*
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
VimosDistModelFull *newDistModelFull(const int orderPol,
const int orderX, const int orderY)
Description:
Allocates a new VimosDistModelFull of order orderPol in t,
orderX in X and orderY in Y
Input:
const int orderPol maximum order of t terms of the model
const int orderX maximum order of X terms of the model
const int orderY maximum order of Y terms of the model
Return Value (succes):
Pointer to a newly allocated VimosDistModelFull structure. All coefficients
are initialized to 0.
Return Value (error):
NULL
Updates:
13 Jun 00: Return NULL on error instead of exiting (Maura)
24 Nov 98: Call exit(-1) on error
18 Nov 98: Offset term sadded (TAO)
13 Nov 98: Created (TAO)
--------------------------------------------------------------------------------
*/
VimosDistModelFull *newDistModelFull(const int orderPol,
const int orderX, const int orderY);
/*
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
void deleteDistModel1D(VimosDistModel1D *model)
void deleteDistModel2D(VimosDistModel2D *model)
void deleteDistModelFull(VimosDistModelFull *model)
Description:
Desctructors of distortion model structures
Input:
VimosDistModel1D *model
Pointer of structure to be deleted
VimosDistModel2D *model
Pointer of structure to be deleted
VimosDistModelFull *model
Pointer of structure to be deleted
Return Value:
void
Updates:
13 Nov 98: Created (TAO)
--------------------------------------------------------------------------------
*/
void deleteDistModel1D(VimosDistModel1D *mod);
void deleteDistModel2D(VimosDistModel2D *mod);
void deleteDistModelFull(VimosDistModelFull *mod);
/* compute model values */
double computeDistModel1D(VimosDistModel1D *mod, float x);
double computeDistModel2D(VimosDistModel2D *mod, float x, float y);
double computeDistModelFull(VimosDistModelFull *mod,float t,float x,float y);
/*
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
VimosBool getDistModel1DFromFull(VimosDistModelFull *full, float x,
float y, VimosDistModel1D **mod1D)
Description:
Extract the a 1 Distortion Model that is modelled using a Full Distortion
Model.
A Full Distortion Model gives
f(t; x,y) = sum A_i (t-offsetT)^i
with
A_i = sum a_i,jk (x-offsetX)^i (y-offsetY)^j,
where the a_i,jk are the coefficients of the Full Model. This function
computes the coefficients A_i so that f(t) can be computed using a 1D
Distorion Model
Input:
VimosDistModelFull
Full Distortion Model
float x, y
position to compute 1D Distortion Model for
Output:
VimosDistModel1D **mod1D
the computed 1D Distortion Model
Return Value (succes):
VM_TRUE
Return Value (error):
VM_FALSE
Updates:
24 Nov 98: Created (TAO)
--------------------------------------------------------------------------------
*/
VimosBool getDistModel1DFromFull(VimosDistModelFull *full, float x, float y,
VimosDistModel1D **mod1D);
/*
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
VimosBool readOptDistModel(VimosDescriptor *desc,
VimosDistModel2D **optModX,
VimosDistModel2D **optModY)
Description:
Read the Optocal Distortion Models from the descriptors
Input:
VimosDescriptor *desc
Linked list of descriptors that contani the coefficients of the Optical
Distortion Models
Output:
VimosDistModel2D **optModX
Contains the Optocal Distortion Model for X
VimosDistModel2D **optModY
Contains the Optocal Distortion Model for Y
Return Value (succes):
VM_TRUE
Return Value (error):
VM_FALSE
Updates:
13 Jun 00: Return VimosBool instead of void (Maura)
24 Nov 98: Created (TAO)
--------------------------------------------------------------------------------
*/
VimosBool readOptDistModel(VimosDescriptor *desc, VimosDistModel2D **optModX,
VimosDistModel2D **optModY);
/*
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
VimosBool writeOptDistModel(VimosDescriptor **desc,
VimosDistModel2D *optModX,
VimosDistModel2D *optModY)
Description:
Write the Optical Distortion Models to the descriptors
Input:
VimosDistModel2D *optModX
Contains the Optical Distortion Model for X
VimosDistModel2D *optModY
Contains the Optical Distortion Model for Y
Output:
VimosDescriptor **desc
Address of pointer to Linked list of descriptors to write to
Return Value (succes):
VM_TRUE
Return Value (error):
VM_FALSE
Updates:
13 Jun 00: Return VimosBool instead of void (Maura)
30 Mar 99: Created (TAO)
--------------------------------------------------------------------------------
*/
VimosBool writeOptDistModel(VimosDescriptor **desc, VimosDistModel2D *optModX,
VimosDistModel2D *optModY);
VimosBool writeOptDistModelString(VimosDescriptor **, VimosDistModel2D *,
VimosDistModel2D *);
/*
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
VimosBool readContaminationModel(VimosDescriptor *desc,
VimosDistModel2D **contModX,
VimosDistModel2D **contModY)
Description:
Read the Contamination Models from the descriptors
Input:
VimosDescriptor *desc
Linked list of descriptors that contain the coefficients of the
Contamination Models
Output:
VimosDistModel2D **contModX
Contains the Contamination Model for X
VimosDistModel2D **contModY
Contains the Contamination Model for Y
Return Value (succes):
VM_TRUE
Return Value (error):
VM_FALSE
Updates:
13 Jun 00: Return VimosBool instead of void (Maura)
22 Dec 99: Created (MS)
--------------------------------------------------------------------------------
*/
VimosBool readContaminationModel(VimosDescriptor *desc,
VimosDistModel2D **contModX, VimosDistModel2D **contModY);
/*
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
VimosBool writeContaminationModel(VimosDescriptor **desc,
VimosDistModel2D *contModX,
VimosDistModel2D *contModY)
Description:
Write the Optical Distortion Models to the descriptors
Input:
VimosDistModel2D *contModX
Contains the Contamination Model for X
VimosDistModel2D *contModY
Contains the Contamination Model for Y
Output:
VimosDescriptor **desc
Address of pointer to Linked list of descriptors to write to
Return Value (succes):
VM_TRUE
Return Value (error):
VM_FALSE
Updates:
30 Nov 00: Created (MS)
--------------------------------------------------------------------------------
*/
VimosBool writeContaminationModel(VimosDescriptor **desc, VimosDistModel2D
*contModX, VimosDistModel2D *contModY);
/*
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
VimosBool readCurvatureModel(VimosDescriptor *desc,
VimosDistModelFull **crvMod)
Description:
Read the Curvature Model from the descriptors
Input:
VimosDescriptor *desc
Pointer to linked list of descriptors that contain the coefficients of the
Curvature Model
Output:
VimosDistModelFull **crvMod
Contains the Curvature Model
Return Value (succes):
VM_TRUE
Return Value (error):
VM_FALSE
Updates:
13 Jun 00: Return VimosBool instead of void (Maura)
24 Nov 98: Created (TAO)
--------------------------------------------------------------------------------
*/
VimosBool readCurvatureModel(VimosDescriptor *desc,
VimosDistModelFull **crvMod);
/*
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
VimosBool writeCurvatureModel(VimosDescriptor **desc,
VimosDistModelFull *crvMod)
Description:
Write a Curvature Model to the descriptors
Input:
VimosDescriptor **desc
Address of pointer to Linked list of descriptors to write to
Output:
VimosDistModelFull *crvMod
Contains the Curvature Model
Return Value (succes):
VM_TRUE
Return Value (error):
VM_FALSE
Updates:
13 Jun 00: Return VimosBool instead of void (Maura)
24 Nov 98: Created (TAO)
--------------------------------------------------------------------------------
*/
VimosBool writeCurvatureModel(VimosDescriptor **desc,
VimosDistModelFull *crvMod);
VimosBool writeCurvatureModelString(VimosDescriptor **desc,
VimosDistModelFull *crvMod);
/*
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
VimosBool readInvDispMatrix(VimosDescriptor *desc,
VimosDistModelFull **invDispMat)
Description:
Read the Inverse Dispersion Matrix from the descriptors
Input:
VimosDescriptor *desc
Linked list of descriptors that contain the coefficients of the
Inverse Dispersion Matrix
Output:
VimosDistModelFull **invDispMat
Contains the Inverse Dispersion Matrix
Return Value (succes):
VM_TRUE
Return Value (error):
VM_FALSE
Updates:
13 Jun 00: Return VimosBool instead of void (Maura)
24 Nov 98: Created (TAO)
--------------------------------------------------------------------------------
*/
VimosBool readInvDispMatrix(VimosDescriptor *desc,
VimosDistModelFull **invDispMat);
/*
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
VimosBool writeInvDispMatrix(VimosDescriptor **desc,
VimosDistModelFull *idsMat)
Description:
Write an Inverse Dispersion Relation Matrix to the descriptors
Input:
VimosDescriptor **desc
Address of pointer to Linked list of descriptors to write to
Output:
VimosDistModelFull *idsMat
Contains the Inverse Dispersion Relation Matrix
Return Value (succes):
VM_TRUE
Return Value (error):
VM_FALSE
Updates:
13 Jun 00: Return VimosBool instead of void (Maura)
24 Nov 98: Created (TAO)
--------------------------------------------------------------------------------
*/
VimosBool writeInvDispMatrix(VimosDescriptor **desc,
VimosDistModelFull *idsMat);
VimosBool writeInvDispMatrixString(VimosDescriptor **desc,
VimosDistModelFull *idsMat);
/*
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
VimosGnomonic *newGnomonic(const double alpha0, const double delta0)
Description:
Allocates a new VimosGnomonic structure for projection centre (alpha0, delat0)
Input:
const double alpha0 RA of projection centre (in degrees!!)
const double delta0 Dec of projection centre (in degrees!!)
Return Value (succes):
Pointer to a newly allocated VimosGnomonic structure with members set to
correct values for projection centre given as input.
Return Value (error):
NULL
Updates:
13 Jun 00: Return NULL on error instead exiting (Maura)
25 feb 99: Created (TAO)
--------------------------------------------------------------------------------
*/
VimosGnomonic *newGnomonic(const double alpha0, const double delta0);
/*
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
void *deleteGnomonic(VimosGnomonic *gnome)
Description:
Desctructor of VimosGnomonic
Input:
VimosGnomonic *gnome
Pointer of structure to be deleted
Return Value:
void
Updates:
25 feb 99: Created (TAO)
--------------------------------------------------------------------------------
*/
void deleteGnomonic(VimosGnomonic *gnome);
/*
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
VimosBool lm2RaDec(VimosGnomonic *gnome, double l, double m,
double *ra, double *dec)
Description:
Convert gnomonic coordinates in Ra and Dec. The coordinate system of Virmos
is modeled as having a gnomonic coordinate system in the focal plane (the
l,m coordinates). This gnomonic coordinate system serevs as an intermediate
system. The relation between the gnomonic coordinates and pixel coordiantes
on the CCD or the mask coordinates is modeled as a VimosDistModel2D.
Input:
VimosGnomonic *gnome
Pointer of VimosGnomonic that contains the RA and Dec of the projection
centre (which should be de position on the sky of the telescope axis, not
the centre of the CCD)
double l
double m
Input l,m coordinates
Output
double *ra
double *dec
Output Ra and Dec
Return Value (succes):
VM_TRUE
Return Value (error):
VM_FALSE
Updates:
13 Jun 00: Return VimosBool instead of void (Maura)
25 feb 99: Created (TAO)
--------------------------------------------------------------------------------
*/
VimosBool lm2RaDec(VimosGnomonic *gnome, double l, double m,
double *ra, double *dec);
/*
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
void deleteGnomonic(VimosGnomonic *gnome)
Description:
Convert Ra and Dec in gnomonic coordinates. The coordinate system of Virmos
is modeled as having a gnomonic coordinate system in the focal plane (the
l,m coordinates). This gnomonic coordinate system serevs as an intermediate
system. The relation between the gnomonic coordinates and pixel coordiantes
on the CCD or the mask coordinates is modeled as a VimosDistModel2D.
Input:
VimosGnomonic *gnome
Pointer of VimosGnomonic that contains the RA and Dec of the projection
centre (which should be de position on the sky of the telescope axis, not
the centre of the CCD)
double ra
double dec
Input Ra and Dec
Output
double *l
double *m
Output l,m coordinates
Return Value:
void
Updates:
25 feb 99: Created (TAO)
--------------------------------------------------------------------------------
*/
VimosBool raDec2lm(VimosGnomonic *gnome, double ra, double dec,
double *l, double *m);
/*
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
VimosBool fitDistModel2D(VimosPixel *surface, int numPoints, int polyDeg,
double offsetX, double offsetY,
VimosDistModel2D **model, double *rms)
Description:
Determine the coefficients of the VimosDistModel2D that connects e.g. one
mask coordinate (e.g. in X) to the gnomonic coordinates of Virmos
Input:
VimosPixel *surface
Pointer to VimosPixel that contains the X or Y position of calibration
positions
int numPoints
Number of input points (i.e. length of *surface)
int polyDeg
Degree to fit to surface. Only those terms of x^i*y^j with i+j <= polyDeg
are fitted
double offsetX
double offsetY
Offset to be applied to the x and y fields of the surface before fitting.
This typically is te position of the telescope axis.
Output
VimosDistModel **model
Model containing the coefficients of the fit
double *rms
RMS deviation from fit
Return Value (succes):
VM_TRUE
Return Value (error):
VM_FALSE
Updates:
13 Jun 00: Return VimosBool instead of void (Maura)
25 feb 99: Created (TAO)
--------------------------------------------------------------------------------
*/
VimosBool fitDistModel2D(VimosPixel *surface, int numPoints, int polyDeg,
double offsetX, double offsetY,
VimosDistModel2D **model, double *rms);
PIL_END_DECLS
#endif /* VM_DISTMODELS_H */
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