1/*
2  Copyright 1999-2016 ImageMagick Studio LLC, a non-profit organization
3  dedicated to making software imaging solutions freely available.
4
5  You may not use this file except in compliance with the License.
6  obtain a copy of the License at
7
8    http://www.imagemagick.org/script/license.php
9
10  Unless required by applicable law or agreed to in writing, software
11  distributed under the License is distributed on an "AS IS" BASIS,
12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  See the License for the specific language governing permissions and
14  limitations under the License.
15
16  MagickCore image compare methods.
17*/
18#ifndef MAGICKCORE_COMPARE_H
19#define MAGICKCORE_COMPARE_H
20
21#include "MagickCore/image.h"
22
23#if defined(__cplusplus) || defined(c_plusplus)
24extern "C" {
25#endif
26
27typedef enum
28{
29  UndefinedErrorMetric,
30  AbsoluteErrorMetric,
31  FuzzErrorMetric,
32  MeanAbsoluteErrorMetric,
33  MeanErrorPerPixelErrorMetric,
34  MeanSquaredErrorMetric,
35  NormalizedCrossCorrelationErrorMetric,
36  PeakAbsoluteErrorMetric,
37  PeakSignalToNoiseRatioErrorMetric,
38  PerceptualHashErrorMetric,
39  RootMeanSquaredErrorMetric
40} MetricType;
41
42extern MagickExport double
43  *GetImageDistortions(Image *,const Image *,const MetricType,ExceptionInfo *);
44
45extern MagickExport Image
46  *CompareImages(Image *,const Image *,const MetricType,double *,
47    ExceptionInfo *),
48  *SimilarityImage(const Image *,const Image *,const MetricType,const double,
49    RectangleInfo *,double *,ExceptionInfo *);
50
51extern MagickExport MagickBooleanType
52  GetImageDistortion(Image *,const Image *,const MetricType,double *,
53    ExceptionInfo *),
54  IsImagesEqual(const Image *,const Image *,ExceptionInfo *),
55  SetImageColorMetric(Image *,const Image *,ExceptionInfo *);
56
57#if defined(__cplusplus) || defined(c_plusplus)
58}
59#endif
60
61#endif
62