Peter M. Groen / openbr

Commit 8dba64925f1ea09e718881c7ef6e5858131aee54

Authored by Josh Klontz
1 parent 602042ab

removed knn

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openbr/plugins/cluster/knn.cpp deleted
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1   -/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
2   - * Copyright 2012 The MITRE Corporation *
3   - * *
4   - * Licensed under the Apache License, Version 2.0 (the "License"); *
5   - * you may not use this file except in compliance with the License. *
6   - * You may obtain a copy of the License at *
7   - * *
8   - * http://www.apache.org/licenses/LICENSE-2.0 *
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   -
17   -#include <openbr/plugins/openbr_internal.h>
18   -#include <openbr/core/common.h>
19   -
20   -using namespace cv;
21   -
22   -namespace br
23   -{
24   -
25   -/*!
26   - * \ingroup transforms
27   - * \brief K nearest neighbors classifier.
28   - * \author Josh Klontz \cite jklontz
29   - */
30   -class KNNTransform : public Transform
31   -{
32   - Q_OBJECT
33   - Q_PROPERTY(int k READ get_k WRITE set_k RESET reset_k STORED false)
34   - Q_PROPERTY(br::Distance *distance READ get_distance WRITE set_distance RESET reset_distance STORED false)
35   - Q_PROPERTY(bool weighted READ get_weighted WRITE set_weighted RESET reset_weighted STORED false)
36   - Q_PROPERTY(int numSubjects READ get_numSubjects WRITE set_numSubjects RESET reset_numSubjects STORED false)
37   - Q_PROPERTY(QString inputVariable READ get_inputVariable WRITE set_inputVariable RESET reset_inputVariable STORED false)
38   - Q_PROPERTY(QString outputVariable READ get_outputVariable WRITE set_outputVariable RESET reset_outputVariable STORED false)
39   - Q_PROPERTY(QString galleryName READ get_galleryName WRITE set_galleryName RESET reset_galleryName STORED false)
40   - BR_PROPERTY(int, k, 1)
41   - BR_PROPERTY(br::Distance*, distance, NULL)
42   - BR_PROPERTY(bool, weighted, false)
43   - BR_PROPERTY(int, numSubjects, 1)
44   - BR_PROPERTY(QString, inputVariable, "Label")
45   - BR_PROPERTY(QString, outputVariable, "KNN")
46   - BR_PROPERTY(QString, galleryName, "")
47   -
48   - TemplateList gallery;
49   -
50   - void train(const TemplateList &data)
51   - {
52   - distance->train(data);
53   - gallery = data;
54   - }
55   -
56   - void project(const Template &src, Template &dst) const
57   - {
58   - QList< QPair<float, int> > sortedScores = Common::Sort(distance->compare(gallery, src), true);
59   -
60   - QStringList subjects;
61   - for (int i=0; i<numSubjects; i++) {
62   - QHash<QString, float> votes;
63   - const int max = (k < 1) ? sortedScores.size() : std::min(k, sortedScores.size());
64   - for (int j=0; j<max; j++)
65   - votes[gallery[sortedScores[j].second].file.get<QString>(inputVariable)] += (weighted ? sortedScores[j].first : 1);
66   - subjects.append(votes.keys()[votes.values().indexOf(Common::Max(votes.values()))]);
67   -
68   - // Remove subject from consideration
69   - if (subjects.size() < numSubjects)
70   - for (int j=sortedScores.size()-1; j>=0; j--)
71   - if (gallery[sortedScores[j].second].file.get<QString>(inputVariable) == subjects.last())
72   - sortedScores.removeAt(j);
73   - }
74   -
75   - dst.file.set(outputVariable, subjects.size() > 1 ? "[" + subjects.join(",") + "]" : subjects.first());
76   - dst.file.set("Nearest", gallery[sortedScores[0].second].file.name);
77   - }
78   -
79   - void store(QDataStream &stream) const
80   - {
81   - stream << gallery;
82   - }
83   -
84   - void load(QDataStream &stream)
85   - {
86   - stream >> gallery;
87   - }
88   -
89   - void init()
90   - {
91   - if (!galleryName.isEmpty())
92   - gallery = TemplateList::fromGallery(galleryName);
93   - }
94   -};
95   -
96   -BR_REGISTER(Transform, KNNTransform)
97   -
98   -} // namespace br
99   -
100   -#include "cluster/knn.moc"