0,0 → 1,100 |
/* |
* Copyright (c) 2001-2003, David Janssens |
* Copyright (c) 2002-2003, Yannick Verschueren |
* Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe |
* Copyright (c) 2005, Hervé Drolon, FreeImage Team |
* Copyright (c) 2002-2005, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium |
* Copyrigth (c) 2006, Mónica Díez, LPI-UVA, Spain |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* 1. Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* 2. Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* |
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS' |
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
* POSSIBILITY OF SUCH DAMAGE. |
*/ |
|
#ifndef __DWT_H |
#define __DWT_H |
/** |
@file dwt.h |
@brief Implementation of a discrete wavelet transform (DWT) |
|
The functions in DWT.C have for goal to realize forward and inverse discret wavelet |
transform with filter 5-3 (reversible) and filter 9-7 (irreversible). The functions in |
DWT.C are used by some function in TCD.C. |
*/ |
|
/** @defgroup DWT DWT - Implementation of a discrete wavelet transform */ |
/*@{*/ |
|
/** |
DCCS-LIWT properties |
*/ |
|
|
typedef struct opj_wtfilt { |
double *LPS; |
int lenLPS; |
double *HPS; |
int lenHPS; |
} opj_wtfilt_t; |
/** @name Funciones generales */ |
/*@{*/ |
/* ----------------------------------------------------------------------- */ |
/** |
Forward 5-3 wavelet tranform in 3-D. |
Apply a reversible DWT transform to a component of an volume. |
@param tilec Tile component information (current tile) |
@param dwtid Number of identification of wavelet kernel(s) used in DWT in each direction |
*/ |
void dwt_encode(opj_tcd_tilecomp_t * tilec, int dwtid[3]); |
/** |
Inverse 5-3 wavelet tranform in 3-D. |
Apply a reversible inverse DWT transform to a component of an volume. |
@param tilec Tile component information (current tile) |
@param stops Number of decoded resolution levels in each dimension |
@param dwtid Number of identification of wavelet kernel(s) used in DWT in each dimension |
*/ |
void dwt_decode(opj_tcd_tilecomp_t * tilec, int stops[3], int dwtid[3]); |
/* ----------------------------------------------------------------------- */ |
/** |
Get the gain of a subband for the reversible 3-D DWT. |
@param orient Number that identifies the subband (0->LLL, 1->HLL, 2->LHL, 3->HHL, 4->LLH, 5->HLH, 6->LHH, 7->HHH) |
@param reversible Wavelet transformation type |
@return Returns 0 if orient = 0, returns 1 if orient = 1,2 or 4, returns 2 if orient = 3,5 or 6, returns 3 otherwise |
*/ |
int dwt_getgain(int orient, int reversible); |
/** |
Get the norm of a wavelet function of a subband at a specified level for the reversible 5-3 DWT or irreversible 9-7 in 3-D. |
@param orient Band of the wavelet function |
@param level Levels of the wavelet function in X,Y,Z axis |
@param dwtid Wavelet transformation identifier |
@return Returns the norm of the wavelet function |
*/ |
double dwt_getnorm(int orient, int level[3], int dwtid[3]); |
/* ----------------------------------------------------------------------- */ |
/** |
Calcula el valor del escalón de cuantificación correspondiente a cada subbanda. |
@param tccp Tile component coding parameters |
@param prec Precision of data |
*/ |
void dwt_calc_explicit_stepsizes(opj_tccp_t * tccp, int prec); |
/*@}*/ |
|
#endif /* __DWT_H */ |
Property changes: |
Added: svn:executable |
+* |
\ No newline at end of property |