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WAVELET(1)			    BRL-CAD			    WAVELET(1)

NAME
       wavelet - perform a haar	wavelet	decomposition/reconstruction

SYNOPSIS
       wavelet [-1] [-2] [-d] [-r] [-# channels] [-t [c	| d | f	| i | l	| s]]
	       [-w width] [-n scanlines] [-s squaresize] [-S square_out_size]
	       [-W width_out] _	file _ wavelet

DESCRIPTION
       The wavelet command will	perform	Haar wavelet decomposition or
       reconstruction transforms on the	input dataset. The command line
       options are:

       -d perform decomposition.

       -r perform reconstruction.

       -1 perform a 1-dimensional (horizontal) transform.

       -2 perform a 1-dimensional (interleaved horizontal and vertical)
       transform.

       -# channels Indicates the number	of values in each sample point.	For
       example,	to perform a transform on a pix(5) file	properly, specify "-#
       3". This	causes the red,	green and blue channels	to be transformed
       individually.

       -t {cdfils} specifies the data type of the input, and hence the data
       type in which the wavelet calculations will be performed. The letters
       each stand for the first	character of the C programming language	data
       type: character,	double,	float, int, long, short. Note that if lossless
       decomposition and reconstruction	are desired, then data sets should be
       converted to the	next larger data type before being processed.

       -w width	Specify	the number of samples per scanline.

       -n scanline Specify the number of scanlines in the dataset

       -s squaresize Specify both width	and scanlines simultaneously (square
       image).

       -W width_out Specifies the width	of the output image. Normally this is
       1 for a full decomposition/reconstruction. You may specify a width at
       which decomposition or reconstruction should stop. This number should
       be a power of 2.	The result will	be an "average"	image of the specified
       size, with the remainder	of the original	data width converted to
       "detail"	coefficients. See also:	-R

       -R avg_size Resumes a transform that left off with an average image of
       avg_size.

       -S square_out_size This is the same as the -W option. It	implies	the
       square size for a 2D decomposition limit.

EXAMPLES
       The command

       decompose -# 3 <	img.pix	| pix-fb will display the horizontal
       decomposition of	the file img.pix.

       The command

       decompose -# 3 -s 1024 -l 64 < img.pix >	will decompose a 1024x1024
       image. The decomposition	will stop when the image has been decomposed
       to 64x64. The output image will thus have a 64x64 version of the
       original	in the lower left corner of the	image, with detail terms in
       the remainder.

SEE ALSO
       brlcad(1), pix(5), bw(5)

AUTHOR
       BRL-CAD Team

COPYRIGHT
       This software is	Copyright (c) 1999-2013	by the United States
       Government as represented by U.S. Army Research Laboratory.

BUG REPORTS
       Reports of bugs or problems should be submitted via electronic mail to
       <devs@brlcad.org>.

BRL-CAD				  07/08/2017			    WAVELET(1)

NAME | SYNOPSIS | DESCRIPTION | EXAMPLES | SEE ALSO | AUTHOR | COPYRIGHT | BUG REPORTS

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