imgtodat.1

spiht for linux this is used to decod and encode vedio i wich all enjoy

.TH IMGTODAT 1 "QCCPACK" ""
.SH NAME
imgtodat \- converts image to dataset
.SH SYNOPSIS
.B imgtodat
.RB "[\|" \-ts
.IR  tilesize "\|]"
.RB "[\|" \-tw
.IR  tilewidth "\|]"
.RB "[\|" \-th
.IR tileheight "\|]"
.I imgfile
.I datfiles...
.SH DESCRIPTION
.LP
.B imgtodat
converts
.IR imgfile ,
an image, to
DAT-format dataset files,
.IR datfiles .
Two-dimensional tiles are extracted from 
.I imgfile
in raster-scan order, converted to one-dimensional
vectors, and written sequentially to each
.IR datfile .
Option
.B \-ts 
specifies that square tiles of size
.RI sqrt( tilesize ") x sqrt(" tilesize ) 
are extracted from 
.I imgfile
and written to each
.I datfile 
as vectors with dimension 
.IR tilesize .
The 
.B \-tw 
and 
.B \-th 
options are used together to specify that
vectors of dimension 
.IR tilewidth " x " tileheight 
are written to each
.I datfile 
from rectangular tiles extracted from 
.IR imgfile .
Note: either 
.B \-ts 
or 
.B \-tw 
and 
.B \-th 
must be given.
.LP
If the input image
.IR imgfile
is a color image,
.B imgtodat
expects three output DAT files specified,
.IR datfile_Y ,
.IR datfile_U ", and"
.IR datfile_V 
for the Y, U, and V components, respectively, of the image.
For grayscale images,
only one output DAT file is to be specified.
.LP
If the image
.I imgfile
does not have size that is a multiple of the requested tile size,
then tiles are extracted from the upper-left part of the image.  Leftover
rows and/or columns at the bottom and right sides of the image, if any,
are ignored and not output to
.IR datfile .
.LP
.BR imgtodat
calls
.BR QccIMGImageComponentToDataset (3)
for each component of the image.
.LP
Note: converting from PGM or PPM images to DAT format implies converting
integer pixels to floating-point values.
.SH "SEE ALSO"
.BR dattoimg (1),
.BR QccIMGImageComponentToDataset (3),
.BR QccPackIMG (3),
.BR QccPack (3)

.SH AUTHOR
Copyright (C) 1997-2009  James E. Fowler
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