trim: Set all pixels outside the limb to 0.0 (use sqib for limb).

Package: vtel

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 brightness threshold of 4 (the standard value) the command would be:

vt> trim data 4

See also

getsqib, putsqib