1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
<!-- Creator : groff version 1.22.4 -->
<!-- CreationDate: Sat Jun 4 16:23:29 2022 -->
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta name="generator" content="groff -Thtml, see www.gnu.org">
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<meta name="Content-Style" content="text/css">
<style type="text/css">
p { margin-top: 0; margin-bottom: 0; vertical-align: top }
pre { margin-top: 0; margin-bottom: 0; vertical-align: top }
table { margin-top: 0; margin-bottom: 0; vertical-align: top }
h1 { text-align: center }
</style>
<title>TIFF2RGBA</title>
</head>
<body>
<h1 align="center">TIFF2RGBA</h1>
<a href="#NAME">NAME</a><br>
<a href="#SYNOPSIS">SYNOPSIS</a><br>
<a href="#DESCRIPTION">DESCRIPTION</a><br>
<a href="#OPTIONS">OPTIONS</a><br>
<a href="#SEE ALSO">SEE ALSO</a><br>
<hr>
<h2>NAME
<a name="NAME"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">tiff2rgba
− convert a <small>TIFF</small> image to RGBA color
space</p>
<h2>SYNOPSIS
<a name="SYNOPSIS"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em"><b>tiff2rgba</b>
[ <i>options</i> ] <i>input.tif output.tif</i></p>
<h2>DESCRIPTION
<a name="DESCRIPTION"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em"><i>Tiff2rgba</i>
converts a wide variety of TIFF images into an RGBA TIFF
image. This includes the ability to translate different
color spaces and photometric interpretation into RGBA,
support for alpha blending, and translation of many
different bit depths into a 32bit RGBA image.</p>
<p style="margin-left:11%; margin-top: 1em">Internally this
program is implemented using the <i>TIFFReadRGBAImage()</i>
function, and it suffers any limitations of that image. This
includes limited support for > 8 BitsPerSample images,
and flaws with some esoteric combinations of BitsPerSample,
photometric interpretation, block organization and planar
configuration.</p>
<p style="margin-left:11%; margin-top: 1em">The generated
images are stripped images with four samples per pixel (red,
green, blue and alpha) or if the <b>−n</b> flag is
used, three samples per pixel (red, green, and blue). The
resulting images are always planar configuration contiguous.
For this reason, this program is a useful utility for
transform exotic TIFF files into a form ingestible by almost
any TIFF supporting software.</p>
<h2>OPTIONS
<a name="OPTIONS"></a>
</h2>
<table width="100%" border="0" rules="none" frame="void"
cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p style="margin-top: 1em"><b>−c</b></p></td>
<td width="8%"></td>
<td width="78%">
<p style="margin-top: 1em">Specify a compression scheme to
use when writing image data: <b>−c none</b> for no
compression (the default), <b>−c packbits</b> for the
PackBits compression algorithm, <b>−c zip</b> for the
Deflate compression algorithm, <b>−c jpeg</b> for the
JPEG compression algorithm, and <b>−c lzw</b> for
Lempel-Ziv & Welch.</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p><b>−r</b></p></td>
<td width="8%"></td>
<td width="78%">
<p>Write data with a specified number of rows per strip; by
default the number of rows/strip is selected so that each
strip is approximately 8 kilobytes.</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p><b>−b</b></p></td>
<td width="8%"></td>
<td width="78%">
<p>Process the image one block (strip/tile) at a time
instead of by reading the whole image into memory at once.
This may be necessary for very large images on systems with
limited RAM.</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p><b>−n</b></p></td>
<td width="8%"></td>
<td width="78%">
<p>Drop the alpha component from the output file, producing
a pure RGB file. Currently this does not work if the
<b>−b</b> flag is also in effect.</p></td></tr>
</table>
<p style="margin-left:11%;"><b>−M</b> <i>size</i></p>
<p style="margin-left:22%;">Set maximum memory allocation
size (in MiB). The default is 256MiB. Set to 0 to disable
the limit.</p>
<h2>SEE ALSO
<a name="SEE ALSO"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em"><b>tiff2bw</b>(1),
<b>TIFFReadRGBAImage</b>(3t), <b>libtiff</b>(3)</p>
<p style="margin-left:11%; margin-top: 1em">Libtiff library
home page: <b>http://www.simplesystems.org/libtiff/</b></p>
<hr>
</body>
</html>
|
