mirror of
https://github.com/opencv/opencv.git
synced 2024-11-24 03:00:14 +08:00
292 lines
9.0 KiB
C
292 lines
9.0 KiB
C
/*
|
|
* Copyright (c) 1999-2000 Image Power, Inc. and the University of
|
|
* British Columbia.
|
|
* Copyright (c) 2001-2003 Michael David Adams.
|
|
* All rights reserved.
|
|
*/
|
|
|
|
/* __START_OF_JASPER_LICENSE__
|
|
*
|
|
* JasPer License Version 2.0
|
|
*
|
|
* Copyright (c) 2001-2006 Michael David Adams
|
|
* Copyright (c) 1999-2000 Image Power, Inc.
|
|
* Copyright (c) 1999-2000 The University of British Columbia
|
|
*
|
|
* All rights reserved.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person (the
|
|
* "User") obtaining a copy of this software and associated documentation
|
|
* files (the "Software"), to deal in the Software without restriction,
|
|
* including without limitation the rights to use, copy, modify, merge,
|
|
* publish, distribute, and/or sell copies of the Software, and to permit
|
|
* persons to whom the Software is furnished to do so, subject to the
|
|
* following conditions:
|
|
*
|
|
* 1. The above copyright notices and this permission notice (which
|
|
* includes the disclaimer below) shall be included in all copies or
|
|
* substantial portions of the Software.
|
|
*
|
|
* 2. The name of a copyright holder shall not be used to endorse or
|
|
* promote products derived from the Software without specific prior
|
|
* written permission.
|
|
*
|
|
* THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS
|
|
* LICENSE. NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
|
|
* THIS DISCLAIMER. THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
|
|
* "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
|
|
* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
|
|
* PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO
|
|
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
|
|
* INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
|
|
* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
|
|
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
|
|
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. NO ASSURANCES ARE
|
|
* PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE
|
|
* THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY.
|
|
* EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS
|
|
* BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL
|
|
* PROPERTY RIGHTS OR OTHERWISE. AS A CONDITION TO EXERCISING THE RIGHTS
|
|
* GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE
|
|
* ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY. THE SOFTWARE
|
|
* IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL
|
|
* SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES,
|
|
* AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL
|
|
* SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH
|
|
* THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH,
|
|
* PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH
|
|
* RISK ACTIVITIES"). THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY
|
|
* EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES.
|
|
*
|
|
* __END_OF_JASPER_LICENSE__
|
|
*/
|
|
|
|
/*
|
|
* Multicomponent Transform Code
|
|
*
|
|
* $Id: jpc_mct.c,v 1.2 2008-05-26 09:40:52 vp153 Exp $
|
|
*/
|
|
|
|
/******************************************************************************\
|
|
* Includes.
|
|
\******************************************************************************/
|
|
|
|
#include <assert.h>
|
|
|
|
#include "jasper/jas_seq.h"
|
|
|
|
#include "jpc_fix.h"
|
|
#include "jpc_mct.h"
|
|
|
|
/******************************************************************************\
|
|
* Code.
|
|
\******************************************************************************/
|
|
|
|
/* Compute the forward RCT. */
|
|
|
|
void jpc_rct(jas_matrix_t *c0, jas_matrix_t *c1, jas_matrix_t *c2)
|
|
{
|
|
int numrows;
|
|
int numcols;
|
|
int i;
|
|
int j;
|
|
jpc_fix_t *c0p;
|
|
jpc_fix_t *c1p;
|
|
jpc_fix_t *c2p;
|
|
|
|
numrows = jas_matrix_numrows(c0);
|
|
numcols = jas_matrix_numcols(c0);
|
|
|
|
/* All three matrices must have the same dimensions. */
|
|
assert(jas_matrix_numrows(c1) == numrows && jas_matrix_numcols(c1) == numcols
|
|
&& jas_matrix_numrows(c2) == numrows && jas_matrix_numcols(c2) == numcols);
|
|
|
|
for (i = 0; i < numrows; i++) {
|
|
c0p = jas_matrix_getref(c0, i, 0);
|
|
c1p = jas_matrix_getref(c1, i, 0);
|
|
c2p = jas_matrix_getref(c2, i, 0);
|
|
for (j = numcols; j > 0; --j) {
|
|
int r;
|
|
int g;
|
|
int b;
|
|
int y;
|
|
int u;
|
|
int v;
|
|
r = *c0p;
|
|
g = *c1p;
|
|
b = *c2p;
|
|
y = (r + (g << 1) + b) >> 2;
|
|
u = b - g;
|
|
v = r - g;
|
|
*c0p++ = y;
|
|
*c1p++ = u;
|
|
*c2p++ = v;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Compute the inverse RCT. */
|
|
|
|
void jpc_irct(jas_matrix_t *c0, jas_matrix_t *c1, jas_matrix_t *c2)
|
|
{
|
|
int numrows;
|
|
int numcols;
|
|
int i;
|
|
int j;
|
|
jpc_fix_t *c0p;
|
|
jpc_fix_t *c1p;
|
|
jpc_fix_t *c2p;
|
|
|
|
numrows = jas_matrix_numrows(c0);
|
|
numcols = jas_matrix_numcols(c0);
|
|
|
|
/* All three matrices must have the same dimensions. */
|
|
assert(jas_matrix_numrows(c1) == numrows && jas_matrix_numcols(c1) == numcols
|
|
&& jas_matrix_numrows(c2) == numrows && jas_matrix_numcols(c2) == numcols);
|
|
|
|
for (i = 0; i < numrows; i++) {
|
|
c0p = jas_matrix_getref(c0, i, 0);
|
|
c1p = jas_matrix_getref(c1, i, 0);
|
|
c2p = jas_matrix_getref(c2, i, 0);
|
|
for (j = numcols; j > 0; --j) {
|
|
int r;
|
|
int g;
|
|
int b;
|
|
int y;
|
|
int u;
|
|
int v;
|
|
y = *c0p;
|
|
u = *c1p;
|
|
v = *c2p;
|
|
g = y - ((u + v) >> 2);
|
|
r = v + g;
|
|
b = u + g;
|
|
*c0p++ = r;
|
|
*c1p++ = g;
|
|
*c2p++ = b;
|
|
}
|
|
}
|
|
}
|
|
|
|
void jpc_ict(jas_matrix_t *c0, jas_matrix_t *c1, jas_matrix_t *c2)
|
|
{
|
|
int numrows;
|
|
int numcols;
|
|
int i;
|
|
int j;
|
|
jpc_fix_t r;
|
|
jpc_fix_t g;
|
|
jpc_fix_t b;
|
|
jpc_fix_t y;
|
|
jpc_fix_t u;
|
|
jpc_fix_t v;
|
|
jpc_fix_t *c0p;
|
|
jpc_fix_t *c1p;
|
|
jpc_fix_t *c2p;
|
|
|
|
numrows = jas_matrix_numrows(c0);
|
|
assert(jas_matrix_numrows(c1) == numrows && jas_matrix_numrows(c2) == numrows);
|
|
numcols = jas_matrix_numcols(c0);
|
|
assert(jas_matrix_numcols(c1) == numcols && jas_matrix_numcols(c2) == numcols);
|
|
for (i = 0; i < numrows; ++i) {
|
|
c0p = jas_matrix_getref(c0, i, 0);
|
|
c1p = jas_matrix_getref(c1, i, 0);
|
|
c2p = jas_matrix_getref(c2, i, 0);
|
|
for (j = numcols; j > 0; --j) {
|
|
r = *c0p;
|
|
g = *c1p;
|
|
b = *c2p;
|
|
y = jpc_fix_add3(jpc_fix_mul(jpc_dbltofix(0.299), r), jpc_fix_mul(jpc_dbltofix(0.587), g),
|
|
jpc_fix_mul(jpc_dbltofix(0.114), b));
|
|
u = jpc_fix_add3(jpc_fix_mul(jpc_dbltofix(-0.16875), r), jpc_fix_mul(jpc_dbltofix(-0.33126), g),
|
|
jpc_fix_mul(jpc_dbltofix(0.5), b));
|
|
v = jpc_fix_add3(jpc_fix_mul(jpc_dbltofix(0.5), r), jpc_fix_mul(jpc_dbltofix(-0.41869), g),
|
|
jpc_fix_mul(jpc_dbltofix(-0.08131), b));
|
|
*c0p++ = y;
|
|
*c1p++ = u;
|
|
*c2p++ = v;
|
|
}
|
|
}
|
|
}
|
|
|
|
void jpc_iict(jas_matrix_t *c0, jas_matrix_t *c1, jas_matrix_t *c2)
|
|
{
|
|
int numrows;
|
|
int numcols;
|
|
int i;
|
|
int j;
|
|
jpc_fix_t r;
|
|
jpc_fix_t g;
|
|
jpc_fix_t b;
|
|
jpc_fix_t y;
|
|
jpc_fix_t u;
|
|
jpc_fix_t v;
|
|
jpc_fix_t *c0p;
|
|
jpc_fix_t *c1p;
|
|
jpc_fix_t *c2p;
|
|
|
|
numrows = jas_matrix_numrows(c0);
|
|
assert(jas_matrix_numrows(c1) == numrows && jas_matrix_numrows(c2) == numrows);
|
|
numcols = jas_matrix_numcols(c0);
|
|
assert(jas_matrix_numcols(c1) == numcols && jas_matrix_numcols(c2) == numcols);
|
|
for (i = 0; i < numrows; ++i) {
|
|
c0p = jas_matrix_getref(c0, i, 0);
|
|
c1p = jas_matrix_getref(c1, i, 0);
|
|
c2p = jas_matrix_getref(c2, i, 0);
|
|
for (j = numcols; j > 0; --j) {
|
|
y = *c0p;
|
|
u = *c1p;
|
|
v = *c2p;
|
|
r = jpc_fix_add(y, jpc_fix_mul(jpc_dbltofix(1.402), v));
|
|
g = jpc_fix_add3(y, jpc_fix_mul(jpc_dbltofix(-0.34413), u),
|
|
jpc_fix_mul(jpc_dbltofix(-0.71414), v));
|
|
b = jpc_fix_add(y, jpc_fix_mul(jpc_dbltofix(1.772), u));
|
|
*c0p++ = r;
|
|
*c1p++ = g;
|
|
*c2p++ = b;
|
|
}
|
|
}
|
|
}
|
|
|
|
jpc_fix_t jpc_mct_getsynweight(int mctid, int cmptno)
|
|
{
|
|
jpc_fix_t synweight;
|
|
|
|
synweight = JPC_FIX_ONE;
|
|
switch (mctid) {
|
|
case JPC_MCT_RCT:
|
|
switch (cmptno) {
|
|
case 0:
|
|
synweight = jpc_dbltofix(sqrt(3.0));
|
|
break;
|
|
case 1:
|
|
synweight = jpc_dbltofix(sqrt(0.6875));
|
|
break;
|
|
case 2:
|
|
synweight = jpc_dbltofix(sqrt(0.6875));
|
|
break;
|
|
}
|
|
break;
|
|
case JPC_MCT_ICT:
|
|
switch (cmptno) {
|
|
case 0:
|
|
synweight = jpc_dbltofix(sqrt(3.0000));
|
|
break;
|
|
case 1:
|
|
synweight = jpc_dbltofix(sqrt(3.2584));
|
|
break;
|
|
case 2:
|
|
synweight = jpc_dbltofix(sqrt(2.4755));
|
|
break;
|
|
}
|
|
break;
|
|
#if 0
|
|
default:
|
|
synweight = JPC_FIX_ONE;
|
|
break;
|
|
#endif
|
|
}
|
|
|
|
return synweight;
|
|
}
|