Pamwipeout User Manual

# pamwipeout

Updated: 26 February 2011
Table Of Contents

## NAME

pamwipeout - replace detail with smooth gradient from one edge to the other

## SYNOPSIS

pamwipeout {-lr | -tb} [filename]

Minimum unique abbreviation of options is acceptable. You may use double hyphens instead of single hyphen to denote options.

## DESCRIPTION

This program is part of Netpbm.

pamwipeout replaces every row or column (as directed) with a smooth gradient between the pixel values at each edge. You can use it in combination with pamcut and pnmpaste / pamcomp to remove unwanted parts of a larger image.

In top-bottom mode, the program reads the whole image into memory before it can start processing. In left-right it will read the image a row at the time, process that row and write it to the output file. Therefore, in case of very large images, it may be better to use instead of "pamwipeout -tb" a pipe of "pamflip -cw | pamwipeout -lr | pamflip -ccw".

## PARAMETERS

Filename is the name of the input file. If you don't specify this, pamwipeout reads the image from Standard Input.

## OPTIONS

In addition to the options common to all programs based on libnetpbm (most notably -quiet, see Common Options), pamwipeout recognizes the following command line options:

-tb | -lr

  This option chooses between a vertical and a horizontal gradient. You must specify one of these, but not both.

## SEE ALSO

pam and pamflip, pamcut, pamcomp, pnmpaste.

## HISTORY

pamwipeout was new in Netpbm 10.54 (March 2011).

A predecessor program (not part of Netpbm) was called pnmblend.

## AUTHORS

Willem van Schaik wrote this program in January 2011 and contributed it to Netpbm.

## Table Of Contents

- SYNOPSIS
- DESCRIPTION
- PARAMETERS
- OPTIONS
- SEE ALSO
- HISTORY
- AUTHORS