Functions | |
void | DoStatistics (const cpl_frame *frame, cpl_image *image, int extnum, cpl_stats **px, cpl_stats **py, cpl_stats **ox, cpl_stats **oy) |
This function performs several statistics on the image and populates the 4 cpl_stats with CPL_STATS_ALL from different pre and over scan regions. | |
cpl_vector * | get_trim_region (const cpl_frame *frame, int extnum) |
Get trim regions based on orientation keyword. | |
cpl_vector * | omega_get_scan_coord (const cpl_propertylist *plist, int iscan) |
This method calculates the FITS coordinates of the pre/overscan region in the iscan direction. | |
cpl_vector * | omega_get_trim_region (omega_fits *ofits) |
Get trim regions based on CCD layout. | |
void | omega_scan_stats (omega_fits *ofits, cpl_stats **px, cpl_stats **py, cpl_stats **ox, cpl_stats **oy) |
This function performs several statistics on the image and populates the 4 cpl_stats with CPL_STATS_ALL from different pre and over scan regions. | |
cpl_image * | omega_trim_oscan_correct (omega_fits *ofits, int oscan) |
This method loads a raw image, trims it and (optionally) performs an overscan correction, using the statistics of the pre and overscan regions. This can be done with a single value for the whole image or on a per-row basis. | |
cpl_image * | oscan_row (cpl_image *img, int x1, int x2) |
subtract median of overscan from each row | |
cpl_image * | TrimOscanCorrect (const cpl_frame *frame, int oscan, int extn) |
This method loads a raw image, trims it and (optionally) performs an overscan correction, using the statistics of the pre and overscan regions. This can be done with a single value for the whole image or on a per-row basis. |
#include omega_trim.h #include omega_pfits.h #include omega_stats.h #include omega_fits.h #include omega_utils.h
void DoStatistics | ( | const cpl_frame * | frame, | |
cpl_image * | image, | |||
int | extnum, | |||
cpl_stats ** | px, | |||
cpl_stats ** | py, | |||
cpl_stats ** | ox, | |||
cpl_stats ** | oy | |||
) |
This function performs several statistics on the image and populates the 4 cpl_stats with CPL_STATS_ALL from different pre and over scan regions.
frame | Frame | |
image | Image related to frame. | |
extn | FITS extension number to load | |
px | Pointer to a cpl_stats of prescan_x | |
py | Pointer to a cpl_stats of prescan_y | |
ox | Pointer to a cpl_stats of overscan_x | |
oy | Pointer to a cpl_stats of overscan_y |
Definition at line 692 of file omega_trim.c.
References omega_get_scan_coord(), and omega_iter_stat_opts().
Referenced by TrimOscanCorrect().
cpl_vector* get_trim_region | ( | const cpl_frame * | frame, | |
int | extnum | |||
) |
Get trim regions based on orientation keyword.
frame | cpl_frame with header keywords describing the pre/overscan layout | |
extnum | FITS extension number to load |
vector --> (x0, ry0, x1, ry1): x0, ry0 -- lower lefthand corner x1, ry1 -- upper righthand corner
Definition at line 443 of file omega_trim.c.
References omega_get_chip_orientation(), and omega_pfits_get_preovscan().
Referenced by omega_shift_refpix(), and TrimOscanCorrect().
cpl_vector* omega_get_scan_coord | ( | const cpl_propertylist * | plist, | |
int | iscan | |||
) |
This method calculates the FITS coordinates of the pre/overscan region in the iscan direction.
plist | Property list to read from | |
iscan | Index translating which keywords to read from header |
This method calculates the FITS coordinates of the pre/overscan region in the iscan direction.
plist | Property list to read from | |
iscan | Index translating which keywords to read from header |
x0 ry0, x1, ry1. The iscan index is: 0 = Prescan X region; 1 = Prescan Y region; 2 = Overscan X region; 3 = Overscan Y region.
Definition at line 919 of file omega_trim.c.
References omega_pfits_get_chipid(), omega_pfits_get_orientation(), and omega_pfits_get_preovscan().
Referenced by DoStatistics(), omega_scan_stats(), omega_trim_oscan_correct(), and TrimOscanCorrect().
cpl_vector* omega_get_trim_region | ( | omega_fits * | ofits | ) |
Get trim regions based on CCD layout.
ofits | omega_fits with header keywords describing the pre/overscan layout |
Note: Property list xplist must not be deallocated as it belongs to the ofits structure
Definition at line 593 of file omega_trim.c.
References omega_fits_get_ehu(), omega_fits_get_extnum(), omega_get_chip_orientation(), and omega_pfits_get_preovscan().
Referenced by omega_trim_oscan_correct().
void omega_scan_stats | ( | omega_fits * | ofits, | |
cpl_stats ** | px, | |||
cpl_stats ** | py, | |||
cpl_stats ** | ox, | |||
cpl_stats ** | oy | |||
) |
This function performs several statistics on the image and populates the 4 cpl_stats with CPL_STATS_ALL from different pre and over scan regions.
ofits | omega_fits structure | |
px | Pointer to a cpl_stats of prescan_x | |
py | Pointer to a cpl_stats of prescan_y | |
ox | Pointer to a cpl_stats of overscan_x | |
oy | Pointer to a cpl_stats of overscan_y |
Definition at line 811 of file omega_trim.c.
References omega_fits_get_ehu(), omega_fits_get_image(), omega_get_scan_coord(), and omega_iter_stat_opts().
Referenced by omega_trim_oscan_correct().
cpl_image* omega_trim_oscan_correct | ( | omega_fits * | ofits, | |
int | oscan | |||
) |
This method loads a raw image, trims it and (optionally) performs an overscan correction, using the statistics of the pre and overscan regions. This can be done with a single value for the whole image or on a per-row basis.
ofits | omega_fits with image to be trimmed and/or overscan corrected. | |
oscan | overscan correction method |
Requires: header keywords describing the pre/overscan layout
overscan_method -- which overscan correction to use: 0 -- No overscan correction (default) 1 -- Use median of prescan_x 2 -- Use median of overscan_x 3 -- Use median of prescan_y 4 -- Use median of overscan_y 5 -- Use per-row value of prescan_x 6 -- Use per_rwo value of overscan_x
Definition of coordinates used in functions:
x0, ry0 -- lower lefthand corner x1, ry1 -- upper righthand corner
Definition at line 248 of file omega_trim.c.
References omega_fits_get_ehu(), omega_fits_get_image(), omega_get_scan_coord(), omega_get_trim_region(), omega_scan_stats(), and oscan_row().
Referenced by omega_fringes_flat_process(), omega_jitter_process(), omega_nsky_process(), and omega_std_process().
cpl_image* oscan_row | ( | cpl_image * | img, | |
int | x1, | |||
int | x2 | |||
) |
subtract median of overscan from each row
img | Image. | |
x1 | first column of overscan region | |
x2 | last column of overscan region |
Definition at line 376 of file omega_trim.c.
Referenced by omega_trim_oscan_correct(), and TrimOscanCorrect().
cpl_image* TrimOscanCorrect | ( | const cpl_frame * | frame, | |
int | oscan, | |||
int | extn | |||
) |
This method loads a raw image, trims it and (optionally) performs an overscan correction, using the statistics of the pre and overscan regions. This can be done with a single value for the whole image or on a per-row basis.
Methods 1-4 assume that DoStatistics() has been run.
frame | Frame to be trimmed and/or overscan corrected. | |
oscan | overscan method | |
extn | FITS extension number to load |
overscan_method -- which overscan correction to use: 0 -- No overscan correction (default) 1 -- Use median of prescan_x 2 -- Use median of overscan_x 3 -- Use median of prescan_y 4 -- Use median of overscan_y 5 -- Use per-row value of prescan_x 6 -- Use per_rwo value of overscan_x
Definition at line 87 of file omega_trim.c.
References DoStatistics(), get_trim_region(), omega_get_scan_coord(), and oscan_row().
Referenced by create_saturated_map(), omega_darkcurrent_combine(), omega_mbias_combine(), omega_mdome_combine(), and omega_mflat_combine().