src/tiff/man/raw2tiff.1

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  24 .if n .po 0
  25 .TH RAW2TIFF 1 "November 2, 2005" "libtiff"
  26 .SH NAME
  27 raw2tiff \- create a
  28 .SM TIFF
  29 file from a raw data
  30 .SH SYNOPSIS
  31 .B raw2tiff
  32 [
  33 .I options
  34 ]
  35 .I input.raw
  36 .I output.tif
  37 .SH DESCRIPTION
  38 .I raw2tiff
  39 converts a raw byte sequence into
  40 .SM TIFF.
  41 By default, the
  42 .SM TIFF
  43 image is created with data samples packed (\c
  44 .IR PlanarConfiguration =1),
  45 compressed with the PackBits algorithm (\c
  46 .IR Compression =32773),
  47 and with each strip no more than 8 kilobytes.
  48 These characteristics can overridden, or explicitly specified
  49 with the options described below.
  50 .SH OPTIONS
  51 .TP
  52 .BI \-H " number"
  53 size of input image file header in bytes (0 by default). This amount of data
  54 just will be skipped from the start of file while reading.
  55 .TP
  56 .BI \-w " number"
  57 width of input image in pixels (can be guessed, see
  58 .SM
  59 .B "GUESSING THE IMAGE GEOMETRY"
  60 below).
  61 .TP
  62 .BI \-l " number"
  63 length of input image in lines (can be guessed, see
  64 .SM
  65 .B "GUESSING THE IMAGE GEOMETRY"
  66 below).
  67 .TP
  68 .BI \-b " number"
  69 number of bands in input image (1 by default).
  70 .TP
  71 .BI \-d " data_type"
  72 type of samples in input image, where
  73 .I data_type
  74 may be:
  75 .ta \w'\fBdouble  \fR'u
  76 .br
  77 .B byte\t
  78 8-bit unsigned integer (default),
  79 .br
  80 .B short\t
  81 16-bit unsigned integer,
  82 .br
  83 .B long\t
  84 32-bit unsigned integer,
  85 .br
  86 .B sbyte\t
  87 8-bit signed integer,
  88 .br
  89 .B sshort\t
  90 16-bit signed integer,
  91 .br
  92 .B slong\t
  93 32-bit signed integer,
  94 .br
  95 .B float\t
  96 32-bit IEEE floating point,
  97 .br
  98 .B double\t
  99 64-bit IEEE floating point.
 100 .TP
 101 .BI \-i " config"
 102 type of samples interleaving in input image, where
 103 .I config
 104 may be:
 105 .ta \w'\fBpixel  \fR'u
 106 .br
 107 .B pixel\t
 108 pixel interleaved data (default),
 109 .br
 110 .B band\t
 111 band interleaved data.
 112 .TP
 113 .BI \-p " photo"
 114 photometric interpretation (color space) of the input image, where
 115 .I photo
 116 may be:
 117 .ta \w'\fBminiswhite  \fR'u
 118 .br
 119 .B miniswhite\t
 120 white color represented with 0 value,
 121 .br
 122 .B minisblack\t
 123 black color represented with 0 value (default),
 124 .br
 125 .B rgb\t
 126 image has RGB color model,
 127 .br
 128 .B cmyk\t
 129 image has CMYK (separated) color model,
 130 .br
 131 .B ycbcr\t
 132 image has YCbCr color model,
 133 .br
 134 .B cielab\t
 135 image has CIE L*a*b color model,
 136 .br
 137 .B icclab\t
 138 image has ICC L*a*b color model,
 139 .br
 140 .B itulab\t
 141 image has ITU L*a*b color model.
 142 .TP
 143 .B \-s
 144 swap bytes fetched from the input file.
 145 .TP
 146 .B \-L
 147 input data has LSB2MSB bit order (default).
 148 .TP
 149 .B \-M
 150 input data has MSB2LSB bit order.
 151 .TP
 152 .B \-c
 153 Specify a compression scheme to use when writing image data:
 154 .B "\-c none"
 155 for no compression,
 156 .B "\-c packbits"
 157 for the PackBits compression algorithm (the default),
 158 .B "\-c jpeg"
 159 for the baseline JPEG compression algorithm,
 160 .B "\-c zip"
 161 for the Deflate compression algorithm,
 162 and
 163 .B "\-c lzw"
 164 for Lempel-Ziv & Welch.
 165 .TP
 166 .BI \-r " number"
 167 Write data with a specified number of rows per strip;
 168 by default the number of rows/strip is selected so that each strip
 169 is approximately 8 kilobytes.
 170 .SH GUESSING THE IMAGE GEOMETRY
 171 .I raw2tiff
 172 can guess image width and height in case one or both of these parameters are
 173 not specified. If you omit one of those parameters, the complementary one will
 174 be calculated based on the file size (taking into account header size, number
 175 of bands and data type). If you omit both parameters, the statistical approach
 176 will be used. Utility will compute correlation coefficient between two lines
 177 at the image center using several appropriate line sizes and the highest
 178 absolute value of the coefficient will indicate the right line size. That is
 179 why you should be cautious with the very large images, because guessing
 180 process may take a while (depending on your system performance). Of course, the
 181 utility can't guess the header size, number of bands and data type, so it
 182 should be specified manually. If you don't know anything about your image,
 183 just try with the several combinations of those options.
 184 .P
 185 There is no magic, it is just a mathematical statistics, so it can be wrong
 186 in some cases. But for most ordinary images guessing method will work fine.
 187 .SH "SEE ALSO"
 188 .BR pal2rgb (1),
 189 .BR tiffinfo (1),
 190 .BR tiffcp (1),
 191 .BR tiffmedian (1),
 192 .BR libtiff (3)
 193 .PP
 194 Libtiff library home page:
 195 .BR http://www.remotesensing.org/libtiff/