1Pamwipeout User Manual(0) Pamwipeout User Manual(0)
2
6 pamwipeout - replace detail with smooth gradient from one edge to the
7 other
8
11 pamwipeout {-lr | -tb} [filename]
12 Minimum unique abbreviation of options is acceptable. You may use dou‐
14 ble hyphens instead of single hyphen to denote options.
15
18 This program is part of Netpbm(1).
19 The pamwipeout utility takes a Netpbm image as input and the uses two
21 opposite edges of the image to wipe out anything in between. You can
22 use it in combination with pamcut and pnmpaste / pamcomp to remove
23 unwanted parts of a larger image. The program replaces the pixels in
24 between the two edges with a gradient from one edge to the other.
25 In top-bottom mode, the program reads the whole image into memory
27 before it can start processing. In left-right it will read the image a
28 row at the time, process that row and write it to the output file.
29 Therefore, in case of very large images, it may be better to use
30 instead of "pamwipeout -tb" a pipe of "pamflip -cw | pamwipeout -lr |
31 pamflip -ccw".
32 In his blog at
34 www.i-am.ws ⟨http://www.i-am.ws/entry/pnmblend_disappearing_act⟩ , the
36 author wrote about a predecessor of "pamwipeout" at the time named
37 "pnmblend". It shows a good example of what can be accomplished with
38 this utility.
39
42 Filename is the name of the input file. If you don't specify this,
43 pamwipeout reads the image from Standard Input.
44
47 -tb | -lr
48 This option chooses between a vertical and a horizontal gradi‐
50 ent. You must specify one of these, but not both.
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56 pam(1) and pamflip(1), pamcut(1), pamcomp(1), pnmpaste(1).
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60 pamwipeout was new in Netpbm 10.54 (March 2011).
61
64 Willem van Schaik wrote this program in January 2011 and contributed it
65 to Netpbm.
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68 This manual page was generated by the Netpbm tool 'makeman' from HTML
69 source. The master documentation is at
70 http://netpbm.sourceforge.net/doc/pamwipeout.html
72netpbm documentation February 26, 2011 Pamwipeout User Manual(0)