326 lines
6.8 KiB
HTML
326 lines
6.8 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
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<HTML><HEAD><TITLE>Manpage of TIFFGT</TITLE>
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</HEAD><BODY BGCOLOR=WHITE><FONT FACE="helvetica, sans, arial">
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<H1>TIFFGT</H1>
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Section: User Commands (1)<BR>Updated: October 15, 1995<BR><A HREF="#index">Index</A>
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<BR><A HREF="index.html">Return to Main Contents</A>
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<HR>
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<A NAME="lbAB"> </A>
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<H2>NAME</H2>
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tiffgt - display an image stored in a
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<FONT SIZE="-1">TIFF</FONT>
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file (Silicon Graphics version)
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<A NAME="lbAC"> </A>
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<H2>SYNOPSIS</H2>
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<B>tiffgt</B>
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[
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<I>options</I>
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]
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<I>input.tif ...</I>
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<A NAME="lbAD"> </A>
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<H2>DESCRIPTION</H2>
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<I>tiffgt</I>
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displays one or more images stored using the
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Tag Image File Format, Revision 6.0.
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Each image is placed in a fixed size window that the
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user must position on the display (unless configured
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otherwise through X defaults).
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If the display has fewer than 24 bitplanes, or if the
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image does not warrant full color, then
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<FONT SIZE="-1">RGB</FONT>
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color values are mapped to the closest values that exist in
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the colormap (this is done using the
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<I>rgbi</I>
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routine found in the graphics utility library
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<B>-lgutil</B>.)
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<P>
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<I>tiffgt</I>
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correctly handles files with any of the following characteristics:
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<P>
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<PRE>
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BitsPerSample 1, 2, 4, 8, 16
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SamplesPerPixel 1, 3, 4 (the 4th sample is ignored)
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PhotometricInterpretation 0 (min-is-white), 1 (min-is-black), 2 (RGB), 3 (palette), 6 (YCbCr)
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PlanarConfiguration 1 (contiguous), 2 (separate)
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Orientation 1 (top-left), 4 (bottom-left)
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</PRE>
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<P>
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Data may be organized as strips or tiles and may be
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compressed with any of the compression algorithms supported
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by the
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<I><A HREF="libtiff+3">libtiff</A></I>(3)
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library.
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<P>
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For palette images (<I>PhotomatricInterpretation</I>=3),
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<I>tiffgt</I>
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inspects the colormap values and assumes either 16-bit
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or 8-bit values according to the maximum value.
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That is, if no colormap entry greater than 255 is found,
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<I>tiffgt</I>
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assumes the colormap has only 8-bit values; otherwise
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it assumes 16-bit values.
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This inspection is done to handle old images written by
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previous (incorrect) versions of
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<I>libtiff</I>.
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<P>
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<I>tiffgt</I>
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can be used to display multiple images one-at-a-time.
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The left mouse button switches the display to the first image in the
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<I>next</I>
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file in the list of files specified on the command line.
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The right mouse button switches to the first image in the
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<I>previous</I>
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file in the list.
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The middle mouse button causes the first image in the first file
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specified on the command line to be displayed.
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In addition the following keyboard commands are recognized:
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<DL COMPACT>
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<DT><B>b</B>
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<DD>
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Use a
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<I>PhotometricIntepretation</I>
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of MinIsBlack in displaying the current image.
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<DT><B>l</B>
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<DD>
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Use a
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<I>FillOrder</I>
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of lsb-to-msb in decoding the current image.
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<DT><B>m</B>
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<DD>
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Use a
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<I>FillOrder</I>
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of msb-tolmsb in decoding the current image.
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<DT><B>c</B>
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<DD>
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Use a colormap visual to display the current image.
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<DT><B>r</B>
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<DD>
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Use a true color (24-bit RGB) visual to display the current image.
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<DT><B>w</B>
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<DD>
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Use a
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<I>PhotometricIntepretation</I>
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of MinIsWhite in displaying the current image.
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<DT><B>W</B>
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<DD>
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Toggle (enable/disable) display of warning messages from the
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<FONT SIZE="-1">TIFF</FONT>
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library when decoding images.
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<DT><B>E</B>
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<DD>
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Toggle (enable/disable) display of error messages from the
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<FONT SIZE="-1">TIFF</FONT>
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library when decoding images.
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<DT><B>z</B>
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<DD>
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Reset all parameters to their default settings (<I>FillOrder</I>,
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<I>PhotometricInterpretation</I>,
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handling of warnings and errors).
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<DT><B>PageUp</B>
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<DD>
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Display the previous image in the current file or the last
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image in the previous file.
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<DT><B>PageDown</B>
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<DD>
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Display the next image in the current file or the first image
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in the next file.
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<DT><B>Home</B>
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<DD>
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Display the first image in the current file.
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<DT><B>End</B>
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<DD>
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Display the last image in the current file (unimplemented).
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</DL>
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<A NAME="lbAE"> </A>
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<H2>OPTIONS</H2>
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<DL COMPACT>
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<DT><B>-c</B>
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<DD>
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Force image display in a colormap window.
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<DT><B>-d</B>
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<DD>
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Specify an image to display by directory number.
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By default the first image in the file is displayed.
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Directories are numbered starting at zero.
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<DT><B>-e</B>
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<DD>
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Enable reporting of error messages from the
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<FONT SIZE="-1">TIFF</FONT>
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library.
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By default
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<I>tiffgt</I>
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silently ignores images that cannot be read.
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<DT><B>-f</B>
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<DD>
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Force
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<I>tiffgt</I>
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to run as a foreground process.
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By default
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<I>tiffgt</I>
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will place itself in the background once it has opened the
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requested image file.
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<DT><B>-l</B>
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<DD>
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Force the presumed bit ordering to be
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<FONT SIZE="-1">LSB</FONT>
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to
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<FONT SIZE="-1">MSB.</FONT>
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<DT><B>-m</B>
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<DD>
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Force the presumed bit ordering to be
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<FONT SIZE="-1">MSB</FONT>
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to
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<FONT SIZE="-1">LSB.</FONT>
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<DT><B>-o</B>
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<DD>
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Specify an image to display by directory offset.
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By default the first image in the file is displayed.
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Directories offsets may be specified using C-style syntax;
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i.e. a leading ``0x'' for hexadecimal and a leading ``0'' for octal.
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<DT><B>-p</B>
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<DD>
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Override the value of the
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<I>PhotometricInterpretation</I>
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tag; the parameter may be one of:
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<I>miniswhite</I>,
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<I>minisblack</I>,
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<I>rgb</I>,
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<I>palette</I>,
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<I>mask</I>,
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<I>separated</I>,
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<I>ycbcr</I>,
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and
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<I>cielab</I>.
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<DT><B>-r</B>
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<DD>
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Force image display in a full color window.
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<DT><B>-s</B>
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<DD>
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Stop on the first read error.
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By default all errors in the input data are ignored and
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<I>tiffgt</I>
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does it's best to display as much of an image as possible.
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<DT><B>-w</B>
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<DD>
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Enable reporting of warning messages from the
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<FONT SIZE="-1">TIFF</FONT>
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library.
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By default
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<I>tiffgt</I>
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ignores warning messages generated when reading an image.
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<DT><B>-v</B>
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<DD>
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Place information in the title bar describing
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what type of window (full color or colormap) is being
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used, the name of the input file, and the directory
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index of the image (if non-zero).
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By default, the window type is not shown in the title bar.
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</DL>
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<A NAME="lbAF"> </A>
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<H2>BUGS</H2>
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Images wider and taller than the display are silently truncated to avoid
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crashing old versions of the window manager.
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<A NAME="lbAG"> </A>
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<H2>SEE ALSO</H2>
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<I><A HREF="tiffdump+1.html">tiffdump</A></I>(1),
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<I><A HREF="tiffinfo+1.html">tiffinfo</A></I>(1),
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<I><A HREF="tiffcp+1.html">tiffcp</A></I>(1),
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<I><A HREF="libtiff+3">libtiff</A></I>(3)
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<HR>
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<A NAME="index"> </A><H2>Index</H2>
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<DL>
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<DT><A HREF="#lbAB">NAME</A><DD>
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<DT><A HREF="#lbAC">SYNOPSIS</A><DD>
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<DT><A HREF="#lbAD">DESCRIPTION</A><DD>
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<DT><A HREF="#lbAE">OPTIONS</A><DD>
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<DT><A HREF="#lbAF">BUGS</A><DD>
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<DT><A HREF="#lbAG">SEE ALSO</A><DD>
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</DL>
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<HR>
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This document was created by
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<A HREF="index.html">man2html</A>,
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using the manual pages.<BR>
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Time: 01:31:48 GMT, November 23, 1999
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</BODY>
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</HTML>
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