qcchypklttrain.3

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

.TH QCCHYPKLTTRAIN 3 "QCCPACK" ""
.SH NAME
QccHYPkltTrain,
QccHYPkltTransform,
QccHYPkltInverseTransform
\- KLT-transform training and forward/inverse KLT application
.SH SYNOPSIS
.B #include "libQccPack.h"
.sp
.BI "int QccHYPkltTrain(const QccIMGImageCube *" image ", QccHYPklt *" klt );
.br
.BI "int QccHYPkltTransform(QccIMGImageCube *" image ", const QccHYPklt *" klt ", int " num_pcs );
.br
.BI "int QccHYPkltInverseTransform(QccIMGImageCube *" image ", const QccHYPklt *" klt );
.SH DESCRIPTION
.BR QccHYPkltTrain()
determines the KLT transform mean vector and transform matrix
for the pixel vectors contained in
.IR image .
Together, the mean vector and transform matrix constitute the KLT
for
.IR image ,
and they are returned in
.IR klt .
.IR klt
must be allocated prior to calling
.BR QccHYPkltTrain() ;
furthermore, the
.IR num_bands
field of
.IR klt
must match the
.IR num_frames
field of
.IR image
(i.e., the number of frames of the image cube is considered to be
the number of spectral bands of the hyperspectral image).
.LP
.BR QccHYPkltTransform()
applies the forward KLT spectrally to each pixel vector in
.IR image ,
which is overwritten with the transformed dataset.
.IR num_pcs
must be less than or equal to
.IR klt->num_bands .
If
.IR num_pcs
is less than
.IR klt->num_bands ,
.BR QccIMGImageCubeResize (3)
is called after the spectral transform is performed in order to
retain only
.IR num_pcs
spectral principal components (PCs).
.LP
.BR QccHYPkltInverseTransform()
is the corresponding inverse transform.
If
.IR image->num_frames
is less than
.IR klt->num_bands ,
.BR QccIMGImageCubeResize (3)
is called prior to application of the inverse transform to resize
.I image
to have dimension of
.IR klt->num_bands
spectrally such that the added PCs are zero.
.SH "THEORY"
See
.BR QccHYPklt (3).
.SH "RETURN VALUE"
Both routines
return 0 on success, 1 on error.
.SH "SEE ALSO"
.BR QccHYPklt (3),
.BR QccPackHYP (3),
.BR QccPack (3)
.SH AUTHOR
Copyright (C) 1997-2009  James E. Fowler
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