man/man1/pcompos.1

.\" RCSid "$Id: pcompos.1,v 1.2 2003/12/09 15:59:06 greg Exp $"
.TH PCOMPOS 1 12/18/97 RADIANCE
.SH NAME
pcompos - composite RADIANCE pictures.
.SH SYNOPSIS
.B pcompos
[
.B \-h
][
.B "\-x xres"
][
.B "\-y yres"
][
.B "\-b r g b"
][
.B "\-lh h"
][
.B \-la
]
[
.B "\-t min1"
][
.B "\+t max1"
][
.B "\-l lab"
][
.B "=SS"
]
.B "pic1 x1 y1 .."
.br
or
.br
.B pcompos
[
.B "\-a ncols"
][
.B "\-s spacing"
][
.B "\-o x0 y0"
][
options
]
.B "pic1 pic2 .."
.SH DESCRIPTION
.I Pcompos
arranges and composites RADIANCE pictures and sends the result to the
standard output.
Each input picture must be accompanied by an anchor point (unless the
.I \-a
option is used, see below).
This anchor point is the usually position of the picture's
left lower corner in the final output, but can be changed
for individual pictures with an 
.I =SS
option, where
.I S
is one of '-', '+' or '0', indicating the minimum, maximum or center
of the image, respectively.
(For example,
.I =+-
would indicate the anchor is relative to the right lower corner, and
.I =-0
would indicate the anchor is relative to the center of the left
edge.)\0
Negative anchor coordinates result in the input being cropped at the origin.
By default, the size of the output picture will be just large enough
to encompass all the input files.
By specifying a smaller dimension using the
.I \-x
and
.I \-y
options, input files can be cropped at the upper boundary.
Specifying a larger dimension produces a border.
The
.I \-b
option specifies a background color to appear wherever input
files do not cover.
The default value is black (0 0 0).
The
.I \-h
option may be used to reduce the information header size, which
can grow disproportionately after multiple runs of
.I pcompos
and/or
.I pcomb(1).
.PP
If input files overlap, later pictures will overwrite earlier ones.
By default, input files are copied unconditionally within the output
boundaries.
The
.I \-t
option specifies a lower threshold intensity under which input pixels
will not be copied to the output.
The
.I \+t
option specifies an upper threshold.
These options are useful for cutting around irregular boundaries in
the input.
.PP
The
.I \-l
option can be used to specify a label for a specific picture, which
will be given a height determined by the
.I \-lh
option (default 24 pixels) and placed in the upper left corner of
the picture.
This label is generated by the program
.I psign(1).
The
.I \-la
option instructs
.I pcompos
to label each picture automatically by its name.
This is particularly useful in conjunction with the
.I \-a
option for producing a catalog of images (see example below).
The
.I \-l
option may still be used to override the default label
for a picture.
.PP
The
.I \-a
option can be used to automatically compute anchor points
that place successive pictures next to each other in
.I ncols
columns.
The ordering will place the first picture in the lower left corner,
the next just to the right of it, and so on for
.I ncols
pictures.
Then, the next row up repeats the pattern until all the input
pictures have been added to the output.
If the pictures are of different size,
.I pcompos
will end up leaving some background areas in the output picture.
There will also be an unfinished row at the top if the number
of pictures is not evenly divided by
.I ncols.
The
.I "\-s N"
option will cause each image to be separated by at least N pixels.
The
.I "\-o x0 y0"
option specifies a nonzero anchor point for the bottom left image.
.PP
The standard input can be specified with a hyphen ('-').
A command that produces a RADIANCE picture can be given in place of a file 
by preceeding it with an exclamation point ('!').
.SH EXAMPLE
To put a copyright label at the bottom of a picture:
.IP "" .2i
psign Copyright 1987 | pcompos pic.inp 0 0 +t .5 - 384 64 > pic.out
.PP
To make a catalog of images separated by white 10-pixel borders:
.IP "" .2i
pcompos -la -a 4 -s 10 -b 1 1 1 dog*.pic > alldogs.pic
.SH NOTES
Since there is a limit to the number of open files and processes,
large collections of images must be created in stages.
Even if the system limit on open files is large,
.I pcompos
places an artificial limit of 64 on the number of open files and/or
processes.
.SH AUTHOR
Greg Ward
.SH "SEE ALSO"
getinfo(1), pcomb(1), pfilt(1), psign(1), rpict(1)
Revision:	1.3
Committed:	Fri Sep 8 21:38:25 2006 UTC (19 years, 1 month ago) by greg
Branch:	MAIN
CVS Tags:	rad3R8
Changes since 1.2:	+11 -2 lines
Log Message:	Added -h option to pcompos and pcomb to avoid uncontrolled header growth
#	User	Rev	Content
1	greg	1.3	.\" RCSid "$Id: pcompos.1,v 1.2 2003/12/09 15:59:06 greg Exp $"
2	greg	1.1	.TH PCOMPOS 1 12/18/97 RADIANCE
3			.SH NAME
4			pcompos - composite RADIANCE pictures.
5			.SH SYNOPSIS
6			.B pcompos
7			[
8	greg	1.3	.B \-h
9			][
10	greg	1.1	.B "\-x xres"
11			][
12			.B "\-y yres"
13			][
14			.B "\-b r g b"
15			][
16			.B "\-lh h"
17			][
18			.B \-la
19			]
20			[
21			.B "\-t min1"
22			][
23			.B "\+t max1"
24			][
25			.B "\-l lab"
26			][
27			.B "=SS"
28			]
29			.B "pic1 x1 y1 .."
30			.br
31			or
32			.br
33			.B pcompos
34			[
35			.B "\-a ncols"
36			][
37			.B "\-s spacing"
38			][
39			.B "\-o x0 y0"
40			][
41			options
42			]
43			.B "pic1 pic2 .."
44			.SH DESCRIPTION
45			.I Pcompos
46			arranges and composites RADIANCE pictures and sends the result to the
47			standard output.
48			Each input picture must be accompanied by an anchor point (unless the
49			.I \-a
50			option is used, see below).
51			This anchor point is the usually position of the picture's
52			left lower corner in the final output, but can be changed
53			for individual pictures with an
54			.I =SS
55			option, where
56			.I S
57			is one of '-', '+' or '0', indicating the minimum, maximum or center
58			of the image, respectively.
59			(For example,
60			.I =+-
61			would indicate the anchor is relative to the right lower corner, and
62			.I =-0
63			would indicate the anchor is relative to the center of the left
64			edge.)\0
65			Negative anchor coordinates result in the input being cropped at the origin.
66			By default, the size of the output picture will be just large enough
67			to encompass all the input files.
68			By specifying a smaller dimension using the
69			.I \-x
70			and
71			.I \-y
72			options, input files can be cropped at the upper boundary.
73			Specifying a larger dimension produces a border.
74			The
75			.I \-b
76			option specifies a background color to appear wherever input
77			files do not cover.
78			The default value is black (0 0 0).
79	greg	1.3	The
80			.I \-h
81			option may be used to reduce the information header size, which
82			can grow disproportionately after multiple runs of
83			.I pcompos
84			and/or
85			.I pcomb(1).
86	greg	1.1	.PP
87			If input files overlap, later pictures will overwrite earlier ones.
88			By default, input files are copied unconditionally within the output
89			boundaries.
90			The
91			.I \-t
92			option specifies a lower threshold intensity under which input pixels
93			will not be copied to the output.
94			The
95			.I \+t
96			option specifies an upper threshold.
97			These options are useful for cutting around irregular boundaries in
98			the input.
99			.PP
100			The
101			.I \-l
102			option can be used to specify a label for a specific picture, which
103			will be given a height determined by the
104			.I \-lh
105			option (default 24 pixels) and placed in the upper left corner of
106			the picture.
107			This label is generated by the program
108			.I psign(1).
109			The
110			.I \-la
111			option instructs
112			.I pcompos
113			to label each picture automatically by its name.
114			This is particularly useful in conjunction with the
115			.I \-a
116			option for producing a catalog of images (see example below).
117			The
118			.I \-l
119			option may still be used to override the default label
120			for a picture.
121			.PP
122			The
123			.I \-a
124			option can be used to automatically compute anchor points
125			that place successive pictures next to each other in
126			.I ncols
127			columns.
128			The ordering will place the first picture in the lower left corner,
129			the next just to the right of it, and so on for
130			.I ncols
131			pictures.
132			Then, the next row up repeats the pattern until all the input
133			pictures have been added to the output.
134			If the pictures are of different size,
135			.I pcompos
136			will end up leaving some background areas in the output picture.
137			There will also be an unfinished row at the top if the number
138			of pictures is not evenly divided by
139			.I ncols.
140			The
141			.I "\-s N"
142			option will cause each image to be separated by at least N pixels.
143			The
144			.I "\-o x0 y0"
145			option specifies a nonzero anchor point for the bottom left image.
146			.PP
147			The standard input can be specified with a hyphen ('-').
148			A command that produces a RADIANCE picture can be given in place of a file
149			by preceeding it with an exclamation point ('!').
150			.SH EXAMPLE
151			To put a copyright label at the bottom of a picture:
152			.IP "" .2i
153			psign Copyright 1987 \| pcompos pic.inp 0 0 +t .5 - 384 64 > pic.out
154			.PP
155			To make a catalog of images separated by white 10-pixel borders:
156			.IP "" .2i
157			pcompos -la -a 4 -s 10 -b 1 1 1 dog*.pic > alldogs.pic
158			.SH NOTES
159			Since there is a limit to the number of open files and processes,
160			large collections of images must be created in stages.
161			Even if the system limit on open files is large,
162			.I pcompos
163			places an artificial limit of 64 on the number of open files and/or
164			processes.
165			.SH AUTHOR
166			Greg Ward
167			.SH "SEE ALSO"
168	greg	1.3	getinfo(1), pcomb(1), pfilt(1), psign(1), rpict(1)