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/* $Id: moses.c,v 1.116 2013/10/15 09:27:38 cgarcia Exp $
*
* This file is part of the MOSES library
* Copyright (C) 2002-2010 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 St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
* $Author: cgarcia $
* $Date: 2013/10/15 09:27:38 $
* $Revision: 1.116 $
* $Name: $
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdexcept>
#include <string>
#include <cpl.h>
#include <hdrl.h>
#include "fors_overscan.h"
#include "fors_image.h"
#include "ccd_config.h"
/**
* @brief
* Subtract the overscan from a CCD exposure
*
* @param image Image containing the data to correct
* @param header Header of the image
*
* @return A newly allocated overscan subtracted image
*
*/
fors_image * fors_subtract_prescan(const fors_image * image,
const mosca::ccd_config& ccd_config)
{
int box_hsize = HDRL_OVERSCAN_FULL_BOX;
//Check inputs
if (image == NULL)
{
cpl_error_set(cpl_func, CPL_ERROR_NULL_INPUT);
return NULL;
}
//Get number of ports
size_t nports = ccd_config.nports();
//Create a copy where to store the results
cpl_image * image_err = cpl_image_power_create(image->variance, 0.5);
cpl_mask * old_bpm = cpl_image_set_bpm(image_err,
cpl_mask_duplicate(cpl_image_get_bpm(image->data)));
cpl_mask_delete(old_bpm);
hdrl_image * target_image = hdrl_image_create(image->data, image_err);
cpl_image_delete(image_err);
//Loop on the ports
for(size_t iport = 0; iport < nports; iport++)
{
hdrl_parameter * collapse_method =
hdrl_collapse_median_parameter_create();
mosca::rect_region ps_reg = ccd_config.prescan_region(iport).coord_0to1();
hdrl_parameter * prescan_region = ps_reg.hdrl_param(); //deleted by ps_reg
hdrl_direction correction_direction;
if(ccd_config.prescan_region(iport).length_x() >
ccd_config.prescan_region(iport).length_y())
correction_direction = HDRL_Y_AXIS;
else
correction_direction = HDRL_X_AXIS;
double ron = ccd_config.computed_ron(iport);
hdrl_parameter * prescan_params =
hdrl_overscan_parameter_create(correction_direction,
ron,
box_hsize,
collapse_method,
prescan_region);
hdrl_overscan_compute_result * os_computation =
hdrl_overscan_compute(image->data, prescan_params);
mosca::rect_region por_reg = ccd_config.validpix_region(iport).coord_0to1();
hdrl_parameter * port_region = por_reg.hdrl_param(); //deleted by por_reg
hdrl_overscan_correct_result * os_correction =
hdrl_overscan_correct(target_image, port_region, os_computation);
hdrl_image * os_corrected_ima =
hdrl_overscan_correct_result_get_corrected(os_correction);
hdrl_image * port_image = hdrl_image_extract(os_corrected_ima,
ccd_config.validpix_region(iport).coord_0to1().llx(),
ccd_config.validpix_region(iport).coord_0to1().lly(),
ccd_config.validpix_region(iport).coord_0to1().urx(),
ccd_config.validpix_region(iport).coord_0to1().ury());
hdrl_image_copy(target_image, port_image,
ccd_config.validpix_region(iport).coord_0to1().llx(),
ccd_config.validpix_region(iport).coord_0to1().lly());
hdrl_overscan_compute_result_delete(os_computation);
hdrl_overscan_correct_result_delete(os_correction);
hdrl_image_delete(port_image);
hdrl_parameter_delete(prescan_params);
}
fors_image * os_subtracted = (fors_image*)cpl_malloc(sizeof(fors_image));
//The rest of the FORS pipeline works with float images
os_subtracted->data = cpl_image_cast
(hdrl_image_get_image_const(target_image), CPL_TYPE_FLOAT);
//First the variance has to be computed and then casted to float
cpl_image_power(hdrl_image_get_error(target_image), 2);
cpl_image * variance = cpl_image_cast
(hdrl_image_get_error_const(target_image), CPL_TYPE_FLOAT);
os_subtracted->variance= variance;
hdrl_image_delete(target_image);
return os_subtracted;
}
fors_image_list * fors_subtract_prescan(const fors_image_list * ima_list,
const mosca::ccd_config& ccd_config)
{
int nima = fors_image_list_size(ima_list);
fors_image_list * ima_list_os_sub = fors_image_list_new();
const fors_image * target_ima = fors_image_list_first_const(ima_list);
for(int ima = 0; ima < nima; ++ima)
{
fors_image * ima_os_sub =
fors_subtract_prescan(target_ima, ccd_config);
fors_image_list_insert(ima_list_os_sub, ima_os_sub);
target_ima = fors_image_list_next_const(ima_list);
}
return ima_list_os_sub;
}
void fors_trimm_preoverscan(fors_image * image,
const mosca::ccd_config& ccd_config)
{
mosca::rect_region crop_region = ccd_config.whole_valid_region();
mosca::rect_region crop_region_1 = crop_region.coord_0to1();
if(crop_region_1.is_empty())
throw std::invalid_argument("Region to crop is empty");
fors_image_crop(image,
crop_region_1.llx(), crop_region_1.lly(),
crop_region_1.urx(), crop_region_1.ury());
}
void fors_trimm_preoverscan(fors_image_list * ima_list,
const mosca::ccd_config& ccd_config)
{
int nima = fors_image_list_size(ima_list);
fors_image * target_ima = fors_image_list_first(ima_list);
for(int ima = 0; ima < nima; ++ima)
{
fors_trimm_preoverscan(target_ima, ccd_config);
target_ima = fors_image_list_next(ima_list);
}
}
void fors_trimm_preoverscan(cpl_mask *& mask,
const mosca::ccd_config& ccd_config)
{
mosca::rect_region crop_region = ccd_config.whole_valid_region();
mosca::rect_region crop_region_1 = crop_region.coord_0to1();
if(crop_region_1.is_empty())
throw std::invalid_argument("Region to crop is empty");
cpl_mask *new_mask = cpl_mask_extract(mask,
crop_region_1.llx(), crop_region_1.lly(),
crop_region_1.urx(), crop_region_1.ury());
cpl_mask_delete(mask);
mask = new_mask;
}
void fors_trimm_fill_info(cpl_propertylist * header,
const mosca::ccd_config& ccd_config)
{
mosca::rect_region crop_region = ccd_config.whole_valid_region();
mosca::rect_region crop_region_1 = crop_region.coord_0to1();
cpl_propertylist_append_int(header, "ESO QC TRIMM LLX",
crop_region_1.llx());
cpl_propertylist_append_int(header, "ESO QC TRIMM LLY",
crop_region_1.lly());
cpl_propertylist_append_int(header, "ESO QC TRIMM URX",
crop_region_1.urx());
cpl_propertylist_append_int(header, "ESO QC TRIMM URY",
crop_region_1.ury());
}
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