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92 lines
3.1 KiB
C++
92 lines
3.1 KiB
C++
/*M///////////////////////////////////////////////////////////////////////////////////////
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//
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// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
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//
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// By downloading, copying, installing or using the software you agree to this license.
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// If you do not agree to this license, do not download, install,
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// copy or use the software.
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//
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//
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// License Agreement
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// For Open Source Computer Vision Library
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//
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// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
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// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
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// Third party copyrights are property of their respective owners.
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//
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// Redistribution and use in source and binary forms, with or without modification,
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// are permitted provided that the following conditions are met:
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//
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// * Redistribution's of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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//
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// * Redistribution's in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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//
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// * The name of the copyright holders may not be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// This software is provided by the copyright holders and contributors "as is" and
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// any express or implied warranties, including, but not limited to, the implied
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// warranties of merchantability and fitness for a particular purpose are disclaimed.
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// In no event shall the Intel Corporation or contributors be liable for any direct,
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// indirect, incidental, special, exemplary, or consequential damages
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// (including, but not limited to, procurement of substitute goods or services;
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// loss of use, data, or profits; or business interruption) however caused
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// and on any theory of liability, whether in contract, strict liability,
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// or tort (including negligence or otherwise) arising in any way out of
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// the use of this software, even if advised of the possibility of such damage.
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//
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//M*/
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#include "util.hpp"
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using namespace std;
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using namespace cv;
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void DjSets::create(int n) {
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rank_.assign(n, 0);
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size.assign(n, 1);
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parent.resize(n);
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for (int i = 0; i < n; ++i)
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parent[i] = i;
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}
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int DjSets::find(int elem) {
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int set = elem;
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while (set != parent[set])
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set = parent[set];
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int next;
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while (elem != parent[elem]) {
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next = parent[elem];
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parent[elem] = set;
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elem = next;
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}
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return set;
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}
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int DjSets::merge(int set1, int set2) {
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if (rank_[set1] < rank_[set2]) {
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parent[set1] = set2;
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size[set2] += size[set1];
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return set2;
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}
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if (rank_[set2] < rank_[set1]) {
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parent[set2] = set1;
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size[set1] += size[set2];
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return set1;
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}
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parent[set1] = set2;
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rank_[set2]++;
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size[set2] += size[set1];
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return set2;
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}
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void Graph::addEdge(int from, int to, float weight)
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{
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edges_[from].push_back(GraphEdge(from, to, weight));
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}
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