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/* @(#)locatefillfibre */
/*===========================================================================
Copyright (C) 2001 European Southern Observatory (ESO)
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., 675 Massachusetss Ave, Cambridge,
MA 02139, USA.
Corresponding concerning ESO-MIDAS should be addressed as follows:
Internet e-mail: midas@eso.org
Postal address: European Southern Observatory
Data Management Division
Karl-Schwarzschild-Strasse 2
D 85748 Garching bei Muenchen
GERMANY
===========================================================================*/
/*-------------------------------------------------------------------------*/
/**
* @defgroup flames_initfillfibre Substep: find the "slices" containing bad pixels and, among them, single out the correctible ones and mark the others as bad
*
*/
/*-------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------
Includes
--------------------------------------------------------------------------*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <math.h>
#include <flames_midas_def.h>
#include <flames_uves.h>
#include <flames_newmatrix.h>
#include <flames_shiftcommon.h>
#include <flames_fillholes.h>
/**@{*/
/*---------------------------------------------------------------------------
Implementation
---------------------------------------------------------------------------*/
/**
@name flames_checksize()
@short find the "slices" containing bad pixels and, among them, single out
the correctible ones and mark the others as bad
@author G. Mulas - ITAL_FLAMES Consortium. Ported to CPL by A. Modigliani
@param allflatsin: a structure which contains the set of fibre FF frames
to be used and related scalars
@param iorder: the given order for the function (pixel coordinates)
@param iframe: the given frame for the function (pixel coordinates)
@param ifibre: the given fibre for the function (pixel coordinates)
@param ix: the given x for the function (pixel coordinates)
@param allflatsin output: the fibre boundaries are, if necessary, reset
here
@param badifibre output: a vector of structures containing the results of
this function
@param badtotal output: the total number of bad pixels found
@return success or failure code
DRS Functions called:
none
Pseudocode:
@note
*/
flames_err
initfillfibre(
allflats *allflatsin,
int32_t iorder,
int32_t iframe,
int32_t ifibre,
int32_t ix,
badifibrestruct *badifibre,
int32_t *badtotal)
{
int32_t goodpixels=0;
int32_t badpixels=0;
int32_t iy=0;
badifibrestruct *mybadifibre=0;
badixstruct *mybadixs=0;
int32_t badixcount=0;
int32_t *lvecbuf1=0;
int32_t *lvecbuf2=0;
frame_mask *fmvecbuf1=0;
frame_mask *fmvecbuf2=0;
int32_t iorderifibreindex=0;
int32_t iorderifibreixindex=0;
int32_t iyixindex=0;
/* initialise the temporary accumulators to 0 */
goodpixels = 0;
badpixels = 0;
lvecbuf1 = allflatsin->lowfibrebounds[0][0];
lvecbuf2 = allflatsin->highfibrebounds[0][0];
fmvecbuf1 = allflatsin->flatdata[iframe].badpixel[0];
fmvecbuf2 = allflatsin->goodfibres[0][0];
mybadifibre = badifibre+ifibre;
badixcount = mybadifibre->badixcount;
mybadixs = mybadifibre->badixs+badixcount;
mybadixs->badiycount = 0;
mybadixs->badiy = 0;
mybadixs->badix = ix;
iorderifibreindex = (iorder*allflatsin->maxfibres)+ifibre;
iorderifibreixindex = (iorderifibreindex*allflatsin->subcols)+ix;
/* loop over pixels belonging to the fibre */
for (iy=lvecbuf1[iorderifibreixindex];
iy<=lvecbuf2[iorderifibreixindex];
iy++){
iyixindex = (iy*allflatsin->subcols)+ix;
if (fmvecbuf1[iyixindex] == 0) {
/* this pixel is good, add to accumulators */
goodpixels++;
}
else {
/* ouch, we hit a bad pixel, increment badpixels counter */
badpixels++;
}
}
/* check goodpixels coverage of the fibre */
if ((double)goodpixels*allflatsin->substepy/(2*allflatsin->halfibrewidth)
< allflatsin->minfibrefrac
&& (lvecbuf1[iorderifibreixindex]-lvecbuf2[iorderifibreixindex]) >=
(2*allflatsin->halfibrewidth)) {
/* the coverage of this fibre at this ix is too low, mark it bad and
disregard it altogether in the first correction pass */
fmvecbuf2[iorderifibreixindex] = BADSLICE;
for (iy=lvecbuf1[iorderifibreixindex];
iy<=lvecbuf2[iorderifibreixindex];
iy++) {
iyixindex = (iy*allflatsin->subcols)+ix;
fmvecbuf1[iyixindex] = 1;
}
}
else if (badpixels != 0) {
/* this fibre is not clean at this ix */
mybadixs->badix = ix;
mybadixs->badiycount = badpixels;
mybadixs->nextbadindex = mybadifibre->badixcount+1;
mybadixs->prevbadindex =
(mybadifibre->badixcount>0) ? mybadifibre->badixcount-1: 0;
mybadifibre->badixcount++;
*badtotal += badpixels;
}
return(NOERR);
}
/**@}*/
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