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trim noao.imred.vtel


NAME · USAGE · PARAMETERS · DESCRIPTION · EXAMPLES · SEE_ALSO

NAME

trim -- Trim the limb. Zero all pixels off the limb in a full disk image

USAGE

trim inputimage threshold

PARAMETERS

inputimage
Name of data image to trim.
threshold
Squibby brightness value to use as a threshold in determining the limb.

DESCRIPTION

Trim scans all the pixels in an image and sets those pixels to zero that contain a squibby brightness smaller than the threshold value. This is done in place, that is, the input image gets modified.

EXAMPLES

1. To trim a data image called data with a squibby brighness threshold of 4 (the standard value) the command would be:

	vt> trim data 4

SEE ALSO

getsqib, putsqib


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