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<html>
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<head>
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<meta name="generator" content="groff -Thtml, see www.gnu.org">
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<meta name="Content-Style" content="text/css">
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<title>RAW2TIFF</title>
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</head>
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<body>
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RAW2TIFF
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NAME
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SYNOPSIS
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DESCRIPTION
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OPTIONS
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GUESSING THE IMAGE GEOMETRY
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SEE ALSO
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NAME
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cols="2" cellspacing="0" cellpadding="0">
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raw2tiff − create a <small>TIFF</small> file from a
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raw data
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SYNOPSIS
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cols="2" cellspacing="0" cellpadding="0">
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raw2tiff [ options ] input.raw
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output.tif
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DESCRIPTION
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cols="2" cellspacing="0" cellpadding="0">
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raw2tiff converts a raw byte sequence into
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<small>TIFF.</small> By default, the <small>TIFF</small>
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image is created with data samples packed
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(PlanarConfiguration=1), compressed with the PackBits
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algorithm (Compression=32773), and with each strip no
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more than 8 kilobytes. These characteristics can overridden,
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or explicitly specified with the options described
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below.
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OPTIONS
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cols="2" cellspacing="0" cellpadding="0">
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−H number
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cols="2" cellspacing="0" cellpadding="0">
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size of input image file header in bytes (0 by default).
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This amount of data just will be skipped from the start of
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file while reading.
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cols="2" cellspacing="0" cellpadding="0">
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−w number
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cols="2" cellspacing="0" cellpadding="0">
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width of input image in pixels (can be guessed, see
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<small>GUESSING THE IMAGE GEOMETRY</small>
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below).
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cols="2" cellspacing="0" cellpadding="0">
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−l number
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cols="2" cellspacing="0" cellpadding="0">
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length of input image in lines (can be guessed, see
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<small>GUESSING THE IMAGE GEOMETRY</small>
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below).
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cols="2" cellspacing="0" cellpadding="0">
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−b number
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cols="2" cellspacing="0" cellpadding="0">
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number of bands in input image (1 by default).
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cols="2" cellspacing="0" cellpadding="0">
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−d data_type
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cols="2" cellspacing="0" cellpadding="0">
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type of samples in input image, where data_type
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may be:
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cols="3" cellspacing="0" cellpadding="0">
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byte
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8-bit unsigned integer (default),
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short
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16-bit unsigned integer,
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long
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32-bit unsigned integer,
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sbyte
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8-bit signed integer,
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sshort
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16-bit signed integer,
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slong
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32-bit signed integer,
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float
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32-bit IEEE floating point,
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double
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64-bit IEEE floating point.
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cols="2" cellspacing="0" cellpadding="0">
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−i config
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cols="2" cellspacing="0" cellpadding="0">
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type of samples interleaving in input image, where
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config may be:
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cols="3" cellspacing="0" cellpadding="0">
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pixel
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pixel interleaved data (default),
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band
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band interleaved data.
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cols="2" cellspacing="0" cellpadding="0">
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−p photo
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cols="2" cellspacing="0" cellpadding="0">
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photometric interpretation (color space) of the input
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image, where photo may be:
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cols="3" cellspacing="0" cellpadding="0">
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miniswhite
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white color represented with 0 value,
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minisblack
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black color represented with 0 value (default),
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rgb
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image has RGB color model,
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cmyk
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image has CMYK (separated) color model,
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ycbcr
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image has YCbCr color model,
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cielab
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image has CIE L*a*b color model,
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icclab
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image has ICC L*a*b color model,
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itulab
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image has ITU L*a*b color model.
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cols="5" cellspacing="0" cellpadding="0">
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−s
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swap bytes fetched from the input file.
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−L
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input data has LSB2MSB bit order (default).
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−M
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input data has MSB2LSB bit order.
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−c
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Specify a compression scheme to use when writing image
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data: −c none for no compression, −c
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packbits for the PackBits compression algorithm (the
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default), −c jpeg for the baseline JPEG
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compression algorithm, −c zip for the Deflate
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compression algorithm, and −c lzw for
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Lempel-Ziv & Welch.
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cols="2" cellspacing="0" cellpadding="0">
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−r number
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cols="2" cellspacing="0" cellpadding="0">
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Write data with a specified number of rows per strip; by
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default the number of rows/strip is selected so that each
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strip is approximately 8 kilobytes.
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GUESSING THE IMAGE GEOMETRY
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cols="2" cellspacing="0" cellpadding="0">
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raw2tiff can guess image width and height in case
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one or both of these parameters are not specified. If you
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omit one of those parameters, the complementary one will be
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calculated based on the file size (taking into account
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header size, number of bands and data type). If you omit
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both parameters, the statistical approach will be used.
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Utility will compute correlation coefficient between two
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lines at the image center using several appropriate line
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sizes and the highest absolute value of the coefficient will
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indicate the right line size. That is why you should be
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cautious with the very large images, because guessing
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process may take a while (depending on your system
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performance). Of course, the utility can’t guess the
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header size, number of bands and data type, so it should be
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specified manually. If you don’t know anything about
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your image, just try with the several combinations of those
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options.
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There is no magic, it is just a mathematical statistics,
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so it can be wrong in some cases. But for most ordinary
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images guessing method will work fine.
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SEE ALSO
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cols="2" cellspacing="0" cellpadding="0">
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pal2rgb(1), tiffcp(1),
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tiffmedian(1), libtiff(3)
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Libtiff library home page:
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http://www.remotesensing.org/libtiff/
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</body>
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</html>
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