1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
/* dECMC.c
*
* Modified:
* 31/10/12
* - from dE76.c
*/
/*
This file is part of VIPS.
VIPS is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
*/
/*
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /*HAVE_CONFIG_H*/
#include <vips/intl.h>
#include <vips/vips.h>
#include <vips/debug.h>
#include "pcolour.h"
typedef struct _VipsdECMC {
VipsColourDifference parent_instance;
} VipsdECMC;
typedef VipsColourDifferenceClass VipsdECMCClass;
G_DEFINE_TYPE( VipsdECMC, vips_dECMC, VIPS_TYPE_COLOUR_DIFFERENCE );
static void
vips_dECMC_class_init( VipsdECMCClass *class )
{
VipsObjectClass *object_class = (VipsObjectClass *) class;
VipsColourClass *colour_class = VIPS_COLOUR_CLASS( class );
object_class->nickname = "dECMC";
object_class->description = _( "calculate dECMC" );
colour_class->process_line = vips__pythagoras_line;
}
static void
vips_dECMC_init( VipsdECMC *dECMC )
{
VipsColourDifference *difference = VIPS_COLOUR_DIFFERENCE( dECMC );
difference->interpretation = VIPS_INTERPRETATION_CMC;
}
/**
* vips_dECMC:
* @left: first input image
* @right: second input image
* @out: output image
* @...: %NULL-terminated list of optional named arguments
*
* Calculate dE CMC. The input images are transformed to CMC colour space and
* the euclidean distance between corresponding pixels calculated.
*
* To calculate a colour difference with values for (l:c) other than (1:1),
* transform the two source images to CMC yourself, scale the channels
* appropriately, and call this function.
*
* See also: vips_colourspace()
*
* Returns: 0 on success, -1 on error
*/
int
vips_dECMC( VipsImage *left, VipsImage *right, VipsImage **out, ... )
{
va_list ap;
int result;
va_start( ap, out );
result = vips_call_split( "dECMC", ap, left, right, out );
va_end( ap );
return( result );
}
|
