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