/usr/include/opengm/inference/fix-fusion/fusion-move.hpp is in libopengm-dev 2.3.6-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 | #ifndef _FUSION_MOVE_HPP_
#define _FUSION_MOVE_HPP_
#include <iostream>
#include <sstream>
#include <boost/foreach.hpp>
#include "higher-order-energy.hpp"
#include "clique.hpp"
#define NO_QPBO
#ifndef NO_QPBO
#include "QPBO.h"
#endif
/*
* fusion-move.hpp
*
* Copyright 2012 Alexander Fix
* See LICENSE.txt for license information
*
* Computes a fusion move between the current and proposed image.
*
* A fusion move takes two images (current and proposed) and tries to perform
* the optimal move where each pixel is allowed to either stay at its current
* value, or switch to its label in the proposed image. This is a
* generalization of alpha-expansion, where in alpha-expansion each pixel is
* allowed to either stay the same, or change to a fixed value alpha. That is,
* alpha expansion is a fusion move where the proposed image is just the flat
* image with value alpha at all pixels.
*
* Template Parameters:
* RandomAccessIterator Needs to support operator[] giving results of type
* Label, so that iter[i] gives the label of
* pixel i
* Energy The value type of the energy function
* Label The label space of the function
* D The maximum number of variables in any clique
* QuadraticRep The type used for optimizing quadratic boolean
* functions
*
* Parameters:
* size The number of variables (pixels) in the image
* current The current image
* proposed The proposed image to fuse with
* out Result will be written here
* cliqueSystem The cliques defining the energy
* qr An empty QuadraticRep. The results of the higher-order
* reduction will be written to this variable, and then
* solved.
*
* All of current, proposed and out must be of size 'size'
* cliqueSystem should refer to variables only in the range 0..(size-1)
*/
template <typename RandomAccessIterator,
typename Energy,
typename Label,
int D,
typename QuadraticRep>
void FusionMove(size_t size,
RandomAccessIterator current,
RandomAccessIterator proposed,
RandomAccessIterator out,
const CliqueSystem<Energy, Label, D>& cliqueSystem,
QuadraticRep& qr);
#ifndef NO_QPBO
/*
* Computes a fusion move with default quadratic representation
*
* Same as the above function, but with the QuadraticRep parameter set
* to QPBO<Energy> as a default
*/
template <typename RandomAccessIterator,
typename Energy,
typename Label,
int D>
void FusionMove(size_t size,
RandomAccessIterator current,
RandomAccessIterator proposed,
RandomAccessIterator out,
const CliqueSystem<Energy, Label, D>& cliqueSystem);
#endif
/*
* Set up the fusion move energy as a HigherOrderEnergy
*
* Template Parameters:
* Same as FusionMove
*
* Parameters:
* size, current, proposed, cliqueSystem same as FusionMove
* hoe Output parameter. Result of setting up the fusion move as a
* higher-order pseudo-boolean function is put here
*/
template <typename RandomAccessIterator,
typename Energy,
typename Label,
int D>
void SetupFusionEnergy(size_t size,
RandomAccessIterator current,
RandomAccessIterator proposed,
const CliqueSystem<Energy, Label, D>& cliqueSystem,
HigherOrderEnergy<Energy, D>& hoe);
/*
* Given a labeling (according to the results of qr.GetLabel) fuse the images
* current and proposed.
*
* Labels of 0 and -1 (unlabeled) are assigned to their value in current
* Labels of 1 are assigned to their value in proposed in the out image
*/
template <typename RandomAccessIterator, typename QuadraticRep>
void GetFusedImage(size_t size,
RandomAccessIterator current,
RandomAccessIterator proposed,
RandomAccessIterator out,
QuadraticRep& qr);
/*
* Implementation
*/
template <typename RandomAccessIterator,
typename Energy,
typename Label,
int D,
typename QuadraticRep>
void FusionMove(size_t size,
RandomAccessIterator current,
RandomAccessIterator proposed,
RandomAccessIterator out,
const CliqueSystem<Energy, Label, D>& cliqueSystem,
QuadraticRep& qr)
{
HigherOrderEnergy<Energy, D> hoe;
SetupFusionEnergy(size, current, proposed, cliqueSystem, hoe);
hoe.ToQuadratic(qr);
qr.Solve();
GetFusedImage(size, current, proposed, out, qr);
}
#ifndef NO_QPBO
template <typename RandomAccessIterator,
typename Energy,
typename Label,
int D>
void FusionMove(size_t size,
RandomAccessIterator current,
RandomAccessIterator proposed,
RandomAccessIterator out,
const CliqueSystem<Energy, Label, D>& cliqueSystem)
{
QPBO<Energy> qr(size, 0);
FusionMove(size, current, proposed, out, cliqueSystem, qr);
}
#endif
template <typename RandomAccessIterator,
typename Energy,
typename Label,
int D>
void SetupFusionEnergy(size_t size,
RandomAccessIterator current,
RandomAccessIterator proposed,
const CliqueSystem<Energy, Label, D>& cliqueSystem,
HigherOrderEnergy<Energy, D>& hoe)
{
hoe.AddVars(size);
typedef typename CliqueSystem<Energy, Label, D>::CliquePointer
CliquePointer;
BOOST_FOREACH(const CliquePointer& cp, cliqueSystem.GetCliques()) {
const CliqueEnergy<Energy, Label, D>& c = *cp;
unsigned int size = c._size;
if (size == 0) {
continue;
} else if (size == 1) {
Energy e0 = c(¤t[c._neighborhood[0]]);
Energy e1 = c(&proposed[c._neighborhood[0]]);
hoe.AddUnaryTerm(c._neighborhood[0], e1 - e0);
} else {
unsigned int numAssignments = 1 << size;
Energy coeffs[numAssignments];
for (unsigned int subset = 1; subset < numAssignments; ++subset) {
coeffs[subset] = 0;
}
// For each boolean assignment, get the clique energy at the
// corresponding labeling
Label cliqueLabels[size];
for (unsigned int assignment = 0;
assignment < numAssignments;
++assignment)
{
for (unsigned int i = 0; i < size; ++i) {
if (assignment & (1 << i)) {
cliqueLabels[i] = proposed[c._neighborhood[i]];
} else {
cliqueLabels[i] = current[c._neighborhood[i]];
}
}
Energy energy = c(cliqueLabels);
for (unsigned int subset = 1;
subset < numAssignments;
++subset)
{
if (assignment & ~subset) {
continue;
} else {
int parity = 0;
for (unsigned int b = 0; b < size; ++b) {
parity ^=
(((assignment ^ subset) & (1 << b)) != 0);
}
coeffs[subset] += parity ? -energy : energy;
}
}
}
typename HigherOrderEnergy<Energy, D>::VarId vars[D];
for (unsigned int subset = 1; subset < numAssignments; ++subset) {
int degree = 0;
for (unsigned int b = 0; b < size; ++b) {
if (subset & (1 << b)) {
vars[degree++] = c._neighborhood[b];
}
}
std::sort(vars, vars+degree);
hoe.AddTerm(coeffs[subset], degree, vars);
}
}
}
}
template <typename RandomAccessIterator, typename QuadraticRep>
void GetFusedImage(size_t size,
RandomAccessIterator current,
RandomAccessIterator proposed,
RandomAccessIterator out,
QuadraticRep& qr)
{
for (size_t i = 0; i < size; ++i) {
int label = qr.GetLabel(i);
if (label == 1) {
out[i] = proposed[i];
} else if (label == 0) {
out[i] = current[i];
} else {
out[i] = current[i];
}
}
}
#endif
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