1Pnmpaste User Manual(0) Pnmpaste User Manual(0)
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6 pnmpaste - paste a rectangle into a PNM image
7
10 pnmpaste
11 [-replace | -or | -and | -xor | -nor | -nand | -nxor]
13 frompnmfile x y [intopnmfile]
15 You can abbreviate all options to their shortest unique prefix.
17
20 This program is part of Netpbm(1).
21 pnmpaste reads two PNM images as input and inserts the first image (the
23 "pasted image") into the second (the "base image") at the specified
24 location, and produces a PNM image the same size and type as the base
25 image as output.
26 Either file name argument (but not both) may be '-' to indicate Stan‐
28 dard Input. If you don't specify the second file argument at all,
29 that's the same as '-'.
30 x and y specify the location in the base image at which to put the top
32 left corner of the pasted image, x giving the horizontal position and x
33 giving the vertical position. A nonnegative value indicates the number
34 of pixels right of the right edge or below the top edge of the base
35 image, while a negative value indicates the number of pixels right of
36 the right edge or below the bottom edge (so x = -5 means 5 pixels left
37 of the right edge).
38 If any part of the pasted image does not fit within the base image,
40 pnmpaste fails.
41 This tool is most useful in combination with pamcut. For instance, if
43 you want to edit a small segment of a large image, and your image edi‐
44 tor cannot edit the large image, you can cut out the segment you are
45 interested in, edit it, and then paste it back in.
46 Another useful companion tool is pbmmask.
48 pamcomp is a more general tool, except that it lacks the "or," "and,"
50 and "xor" functions. pamcomp allows you to specify a transparency mask
51 in order to have only part of the inserted image get inserted. So the
52 inserted pixels need not be a rectangle. You can also have the
53 inserted image be translucent, so the resulting image is a mixture of
54 the inserted image and the base image.
55
58 In addition to the options common to all programs based on libnetpbm
59 (most notably -quiet, see
60 Common Options ⟨index.html#commonoptions⟩ ), pnmpaste recognizes the
61 following command line options:
62 -replace, -or, -and, -xor,
66 -nor, -nand, -nxor
67 These option specify the operation to use when doing the paste.
69 The default is -replace, which means to do the obvious paste:
70 replace pixels of the "into" image with those of the "from"
71 image.
72 -and, -nand, -or, -nor, -xor, and nxor are allowed only if both
74 input images are PBM images. They say to combine the "from" and
75 "into" images by performing boolean operations: Each pixel of
76 the output image is the result of the boolean operation on the
77 corresponding pixels of the two input images, where white is
78 TRUE and black is FALSE.
79 Note that this is different from what you would get by doing a
81 bit arithmetic on the bits in the PBM images, because in PBM,
82 white is represented by a 0 bit, and 0 in bit arithmetic corre‐
83 sponds to FALSE in boolean arithmetic.
84 -nand, -nor, and -nxor were new in Netpbm 10.85 (December 2018).
86
91 pamcomp(1), pamcut(1), pnminvert(1), pnmarith(1), pbmmask(1), pnm(1)
92
95 Copyright (C) 1989, 1991 by Jef Poskanzer.
96
98 This manual page was generated by the Netpbm tool 'makeman' from HTML
99 source. The master documentation is at
100 http://netpbm.sourceforge.net/doc/pnmpaste.html
102netpbm documentation 16 December 2018 Pnmpaste User Manual(0)