mirror of https://github.com/opencv/opencv.git
Open Source Computer Vision Library
https://opencv.org/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
291 lines
9.0 KiB
291 lines
9.0 KiB
/* |
|
* 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; |
|
}
|
|
|