dmimghull

Synopsis

Create convex hull around pixels in image

dmimghull  infile outfile [tolerance] [clobber] [verbose]

Description

`dmimghull' computes the convex hull around pixels whose values are (strictly) greater than the tolerance value. The output is a FITS region file.

Example

dmimghull img.fits dist.fits tol=0

Computes the convex hull around the pixels in the image whose values are greater than 0.

Parameters

Detailed Parameter Descriptions

Parameter=infile (file required filetype=input)

Input image

Parameter=outfile (file required filetype=output)

Output region file

The polygon that encloses the input pixels above threshold

Parameter=tolerance (real)

Value below which to consider background

Parameter=clobber (boolean default=no)

Remove output if it exists?

If clobber=yes and a file exists that has the same name as the name of the output file, then the existing file is overwritten.

Parameter=verbose (integer default=0 min=0 max=5)

Tool verbosity level

Verbose can be from 0 to 5, which determines the amount of screen output that is generated.

Changes in CIAO 4.4

• dmimghull creates a convex hull around pixels in image.

Bugs

There are no known bugs for this tool.

See Also

concept

subspace

dm

dmfiltering, dmregions

tools

dither_region, dmappend, dmcontour, dmellipse, dmfilth, dmgroupreg, dmimg2jpg, dmimgadapt, dmimgblob, dmimgcalc, dmimgdist, dmimgfilt, dmimghist, dmimglasso, dmimgpick, dmimgpm, dmimgproject, dmimgreproject, dmimgthresh, dmmakereg, dmmaskbin, dmmaskfill, dmnautilus, dmregrid, dmregrid2, dmstat, evalpos, get_fov_limits, get_sky_limits, get_src_region, imgmoment, mean_energy_map, mkbgreg, mksubbgreg, pileup_map, roi, splitroi, tg_create_mask