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GCoptimization.cpp
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GCoptimization.cpp
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#include "energy.h"
#include "graph.h"
#include "GCoptimization.h"
#include <stdio.h>
#include <time.h>
#include <stdlib.h>
#define MAX_INTT 1000000000
/**************************************************************************************/
void GCoptimization::initialize_memory()
{
int i = 0;
m_lookupPixVar = (PixelType *) new PixelType[m_num_pixels];
m_labelTable = (LabelType *) new LabelType[m_num_labels];
terminateOnError( !m_lookupPixVar || !m_labelTable,"Not enough memory");
for ( i = 0; i < m_num_labels; i++ )
m_labelTable[i] = i;
for ( i = 0; i < m_num_pixels; i++ )
m_lookupPixVar[i] = -1;
}
/**************************************************************************************/
void GCoptimization::commonGridInitialization(PixelType width, PixelType height, int nLabels)
{
terminateOnError( (width < 0) || (height <0) || (nLabels <0 ),"Illegal negative parameters");
m_width = width;
m_height = height;
m_num_pixels = width*height;
m_num_labels = nLabels;
m_grid_graph = 1;
srand(time(NULL));
}
/**************************************************************************************/
void GCoptimization::commonNonGridInitialization(PixelType nupixels, int num_labels)
{
terminateOnError( (nupixels <0) || (num_labels <0 ),"Illegal negative parameters");
m_num_labels = num_labels;
m_num_pixels = nupixels;
m_grid_graph = 0;
m_neighbors = (LinkedBlockList *) new LinkedBlockList[nupixels];
terminateOnError(!m_neighbors,"Not enough memory");
}
/**************************************************************************************/
void GCoptimization::commonInitialization(int dataSetup, int smoothSetup)
{
int i;
m_random_label_order = 1;
m_dataInput = dataSetup;
m_smoothInput = smoothSetup;
if (m_dataInput == SET_INDIVIDUALLY )
{
m_datacost = (EnergyTermType *) new EnergyTermType[m_num_labels*m_num_pixels];
terminateOnError(!m_datacost,"Not enough memory");
for ( i = 0; i < m_num_labels*m_num_pixels; i++ )
m_datacost[i] = (EnergyTermType) 0;
m_dataType = ARRAY;
}
else m_dataType = NONE;
if ( m_smoothInput == SET_INDIVIDUALLY )
{
m_smoothcost = (EnergyTermType *) new EnergyTermType[m_num_labels*m_num_labels];
terminateOnError(!m_smoothcost,"Not enough memory");
for ( i = 0; i < m_num_labels*m_num_labels; i++ )
m_smoothcost[i] = (EnergyTermType) 0;
m_smoothType = ARRAY;
m_varying_weights = 0;
}
else m_smoothType = NONE;
initialize_memory();
srand(time(NULL));
// <!-- bagon
// sign class as valid
class_sig = VALID_CLASS_SIGNITURE;
truncate_flag = false;
// bagon -->
}
/**************************************************************************************/
/* Use this constructor only for grid graphs */
GCoptimization::GCoptimization(PixelType width,PixelType height,int nLabels,int dataSetup, int smoothSetup )
{
commonGridInitialization(width,height,nLabels);
m_labeling = (LabelType *) new LabelType[m_num_pixels];
terminateOnError(!m_labeling,"out of memory");
for ( int i = 0; i < m_num_pixels; i++ ) m_labeling[i] = (LabelType) 0;
m_deleteLabeling = 1;
commonInitialization(dataSetup,smoothSetup);
}
/**************************************************************************************/
/* Use this constructor only for grid graphs */
GCoptimization::GCoptimization(LabelType *m_answer,PixelType width,PixelType height,int nLabels,
int dataSetup, int smoothSetup)
{
commonGridInitialization(width,height,nLabels);
m_labeling = m_answer;
for ( int i = 0; i < m_num_pixels; i++ )
terminateOnError(m_labeling[i] < 0 || m_labeling[i] >= nLabels,"Initial labels are out of valid range");
m_deleteLabeling = 0;
commonInitialization(dataSetup,smoothSetup);
}
/**************************************************************************************/
/* Use this constructor for general graphs */
GCoptimization::GCoptimization(PixelType nupixels,int nLabels,int dataSetup, int smoothSetup )
{
commonNonGridInitialization(nupixels, nLabels);
m_labeling = (LabelType *) new LabelType[m_num_pixels];
terminateOnError(!m_labeling,"out of memory");
for ( int i = 0; i < nupixels; i++ ) m_labeling[i] = (LabelType) 0;
m_deleteLabeling = 1;
commonInitialization(dataSetup,smoothSetup);
}
/**************************************************************************************/
/* Use this constructor for general graphs */
GCoptimization::GCoptimization(LabelType *m_answer, PixelType nupixels,int nLabels,int dataSetup, int smoothSetup)
{
commonNonGridInitialization(nupixels, nLabels);
m_labeling = m_answer;
for ( int i = 0; i < m_num_pixels; i++ )
terminateOnError(m_labeling[i] < 0 || m_labeling[i] >= nLabels,"Initial labels are out of valid range");
m_deleteLabeling = 0;
commonInitialization(dataSetup,smoothSetup);
}
/**************************************************************************************/
void GCoptimization::setData(EnergyTermType* dataArray)
{
terminateOnError(m_dataType != NONE,
"ERROR: you already set the data, or said you'll use member function setDataCost() to set data");
// <!-- bagon
/* allocate memory dinamiocally */
m_datacost = (EnergyTermType *) new EnergyTermType[m_num_pixels*m_num_labels];
for ( int i(0); i < m_num_pixels*m_num_labels; i++ )
m_datacost[i] = dataArray[i];
// m_datacost = dataArray;
// bagon -->
m_dataType = ARRAY;
}
/**************************************************************************************/
void GCoptimization::setData(dataFnPix dataFn)
{
terminateOnError(m_dataType != NONE,
"ERROR: you already set the data, or said you'll use member function setDataCost() to set data");
m_dataFnPix = dataFn;
m_dataType = FUNCTION_PIX;
}
/**************************************************************************************/
void GCoptimization::setData(dataFnCoord dataFn)
{
terminateOnError(m_dataType != NONE,
"ERROR: you already set the data, or said you'll use member function setDataCost() to set data");
terminateOnError( !m_grid_graph,"Cannot use data function based on coordinates for non-grid graph");
m_dataFnCoord = dataFn;
m_dataType = FUNCTION_COORD;
}
/**************************************************************************************/
void GCoptimization::setSmoothness(EnergyTermType* V)
{
terminateOnError(m_smoothType != NONE,
"ERROR: you already set smoothness, or said you'll use member function setSmoothCost() to set Smoothness Costs");
m_smoothType = ARRAY;
// <!-- bagon
/* allocate memory dinamiocally */
m_smoothcost = (EnergyTermType *) new EnergyTermType[m_num_labels*m_num_labels];
for ( int i(0); i < m_num_labels*m_num_labels; i++ )
m_smoothcost[i] = V[i];
// m_smoothcost = V;
// bagon -->
m_varying_weights = 0;
}
/**************************************************************************************/
void GCoptimization::setSmoothness(EnergyTermType* V,EnergyTermType* hCue, EnergyTermType* vCue)
{
terminateOnError(m_smoothType != NONE,
"ERROR: you already set smoothness, or said you'll use member function setSmoothCost() to set Smoothness Costs");
terminateOnError(!m_grid_graph,
"ERROR: for a grid graph, you can't use vertical and horizontal cues. Use setNeighbors() member function to encode spatially varying cues");
m_varying_weights = 1;
m_smoothType = ARRAY;
// <!-- bagon
/* allocate memory dinamiocally */
int i = 0;
m_smoothcost = (EnergyTermType *) new EnergyTermType[m_num_labels*m_num_labels];
for ( i = 0; i < m_num_labels*m_num_labels; i++ )
m_smoothcost[i] = V[i];
m_vertWeights = (EnergyTermType *) new EnergyTermType[m_num_pixels];
for ( i = 0; i < m_num_pixels; i++ )
m_vertWeights[i] = vCue[i];
m_horizWeights = (EnergyTermType *) new EnergyTermType[m_num_pixels];
for ( i = 0; i < m_num_pixels; i++ )
m_horizWeights[i] = hCue[i];
//m_vertWeights = vCue;
//m_horizWeights = hCue;
//m_smoothcost = V;
// bagon -->
}
/**************************************************************************************/
void GCoptimization::setSmoothness(smoothFnCoord horz_cost, smoothFnCoord vert_cost)
{
terminateOnError(m_smoothType != NONE,
"ERROR: you already set smoothness, or said you'll use member function setSmoothCost() to set Smoothness Costs");
terminateOnError( !m_grid_graph,"Cannot use smoothness function based on coordinates for non-grid graph");
m_smoothType = FUNCTION_COORD;
m_horz_cost = horz_cost;
m_vert_cost = vert_cost;
}
/**************************************************************************************/
void GCoptimization::setSmoothness(smoothFnPix cost)
{
terminateOnError(m_smoothType != NONE,
"ERROR: you already set smoothness, or said you'll use member function setSmoothCost() to set Smoothness Costs");
m_smoothType = FUNCTION_PIX;
m_smoothFnPix = cost;
}
/**************************************************************************************/
// <!-- bagon
void
GCoptimization::SetAllLabels(const LabelType* labels)
{
for( int i(0); i < m_num_pixels; i++ ) {
terminateOnError( (labels[i]<0) || (labels[i]>=m_num_labels), "Wrong label value");
m_labeling[i] = labels[i];
}
}
/**************************************************************************************/
void
GCoptimization::ExportLabels(LabelType* labels)
{
for( int i(0); i < m_num_pixels; i++)
labels[i] = m_labeling[i];
}
// bagon -->
/**************************************************************************************/
GCoptimization::EnergyType GCoptimization::giveDataEnergy()
{
if ( m_dataType == ARRAY)
return(giveDataEnergyArray());
else if ( m_dataType == FUNCTION_PIX )
return(giveDataEnergyFnPix());
else if (m_dataType == FUNCTION_COORD ) return(giveDataEnergyFnCoord());
else terminateOnError(1,"Did not initialize the data costs yet");
return(0);
}
/**************************************************************************************/
GCoptimization::EnergyType GCoptimization::giveDataEnergyArray()
{
EnergyType eng = (EnergyType) 0;
for ( int i = 0; i < m_num_pixels; i++ ) {
if (m_labeling[i] != m_num_labels+1) {
eng = eng + m_datacost(i,m_labeling[i]);
// mexPrintf("node %d, label %d : %f \t (%f)\n", i, m_labeling[i], m_datacost(i,m_labeling[i]), eng);
}
}
return(eng);
}
/**************************************************************************************/
GCoptimization::EnergyType GCoptimization::giveDataEnergyFnPix()
{
EnergyType eng = (EnergyType) 0;
for ( int i = 0; i < m_num_pixels; i++ )
eng = eng + m_dataFnPix(i,m_labeling[i]);
return(eng);
}
/**************************************************************************************/
GCoptimization::EnergyType GCoptimization::giveDataEnergyFnCoord()
{
EnergyType eng = (EnergyType) 0;
for ( int y = 0; y < m_height; y++ )
for ( int x = 0; x < m_width; x++ )
eng = eng + m_dataFnCoord(x,y,m_labeling[x+y*m_width]);
return(eng);
}
/**************************************************************************************/
GCoptimization::EnergyType GCoptimization::giveSmoothEnergy()
{
if ( m_grid_graph )
{
if ( m_smoothType == ARRAY )
{
if (m_varying_weights) return(giveSmoothEnergy_G_ARRAY_VW());
else return(giveSmoothEnergy_G_ARRAY());
}
else if ( m_smoothType == FUNCTION_PIX ) return(giveSmoothEnergy_G_FnPix());
else if ( m_smoothType == FUNCTION_COORD ) return(giveSmoothEnergy_G_FnCoord());
else terminateOnError(1,"Did not initialize smoothness costs yet, can't compute smooth energy");
}
else
{
if ( m_smoothType == ARRAY ) return(giveSmoothEnergy_NG_ARRAY());
else if ( m_smoothType == FUNCTION_PIX ) return(giveSmoothEnergy_NG_FnPix());
else terminateOnError(1,"Did not initialize smoothness costs yet, can't compute smooth energy");
}
return(0);
}
/**************************************************************************************/
GCoptimization::EnergyType GCoptimization::giveSmoothEnergy_NG_FnPix()
{
EnergyType eng = (EnergyType) 0;
int i;
Neighbor *temp;
for ( i = 0; i < m_num_pixels; i++ )
if ( !m_neighbors[i].isEmpty() )
{
m_neighbors[i].setCursorFront();
while ( m_neighbors[i].hasNext() )
{
temp = (Neighbor *) m_neighbors[i].next();
if ( i < temp->to_node )
eng = eng + m_smoothFnPix(i,temp->to_node, m_labeling[i],m_labeling[temp->to_node]);
}
}
return(eng);
}
/**************************************************************************************/
GCoptimization::EnergyType GCoptimization::giveSmoothEnergy_NG_ARRAY()
{
EnergyType eng = (EnergyType) 0;
int i;
Neighbor *temp;
for ( i = 0; i < m_num_pixels; i++ )
if ( !m_neighbors[i].isEmpty() )
{
m_neighbors[i].setCursorFront();
while ( m_neighbors[i].hasNext() )
{
temp = (Neighbor *) m_neighbors[i].next();
if ( i < temp->to_node )
eng = eng + m_smoothcost(m_labeling[i],m_labeling[temp->to_node])*(temp->weight);
}
}
return(eng);
}
/**************************************************************************************/
GCoptimization::EnergyType GCoptimization::giveSmoothEnergy_G_ARRAY_VW()
{
EnergyType eng = (EnergyType) 0;
int x,y,pix;
// printf("\nIn right place");
for ( y = 0; y < m_height; y++ )
for ( x = 1; x < m_width; x++ ) if ((m_labeling[x+y*m_width-1] != m_num_labels +1) &&(m_labeling[x+y*m_width] != m_num_labels +1) )
{
pix = x+y*m_width;
eng = eng + m_smoothcost(m_labeling[pix],m_labeling[pix-1])*m_horizWeights[pix-1];
}
for ( y = 1; y < m_height; y++ )
for ( x = 0; x < m_width; x++ )if ((m_labeling[x+y*m_width-m_width] != m_num_labels +1) &&(m_labeling[x+y*m_width] != m_num_labels +1) )
{
pix = x+y*m_width;
eng = eng + m_smoothcost(m_labeling[pix],m_labeling[pix-m_width])*m_vertWeights[pix-m_width];
}
return(eng);
}
/**************************************************************************************/
GCoptimization::EnergyType GCoptimization::giveSmoothEnergy_G_ARRAY()
{
EnergyType eng = (EnergyType) 0;
int x,y,pix;
for ( y = 0; y < m_height; y++ )
for ( x = 1; x < m_width; x++ )
{
pix = x+y*m_width;
eng = eng + m_smoothcost(m_labeling[pix],m_labeling[pix-1]);
}
for ( y = 1; y < m_height; y++ )
for ( x = 0; x < m_width; x++ )
{
pix = x+y*m_width;
eng = eng + m_smoothcost(m_labeling[pix],m_labeling[pix-m_width]);
}
return(eng);
}
/**************************************************************************************/
GCoptimization::EnergyType GCoptimization::giveSmoothEnergy_G_FnPix()
{
EnergyType eng = (EnergyType) 0;
int x,y,pix;
for ( y = 0; y < m_height; y++ )
for ( x = 1; x < m_width; x++ )
{
pix = x+y*m_width;
eng = eng + m_smoothFnPix(pix,pix-1,m_labeling[pix],m_labeling[pix-1]);
}
for ( y = 1; y < m_height; y++ )
for ( x = 0; x < m_width; x++ )
{
pix = x+y*m_width;
eng = eng + m_smoothFnPix(pix,pix-m_width,m_labeling[pix],m_labeling[pix-m_width]);
}
return(eng);
}
/**************************************************************************************/
GCoptimization::EnergyType GCoptimization::giveSmoothEnergy_G_FnCoord()
{
EnergyType eng = (EnergyType) 0;
int x,y,pix;
for ( y = 0; y < m_height; y++ )
for ( x = 1; x < m_width; x++ )
{
pix = x+y*m_width;
eng = eng + m_horz_cost(x-1,y,m_labeling[pix],m_labeling[pix-1]);
}
for ( y = 1; y < m_height; y++ )
for ( x = 0; x < m_width; x++ )
{
pix = x+y*m_width;
eng = eng + m_vert_cost(x,y-1,m_labeling[pix],m_labeling[pix-m_width]);
}
return(eng);
}
/**************************************************************************************/
GCoptimization::EnergyType GCoptimization::compute_energy()
{
return(giveDataEnergy()+giveSmoothEnergy());
}
/**************************************************************************************/
GCoptimization::EnergyType GCoptimization::expansion(int max_num_iterations)
{
return(start_expansion(max_num_iterations));
}
/**************************************************************************************/
GCoptimization::EnergyType GCoptimization::expansion()
{
return(start_expansion(MAX_INTT));
}
/**************************************************************************************/
GCoptimization::EnergyType GCoptimization::start_expansion(int max_num_iterations )
{
int curr_cycle = 1;
EnergyType new_energy,old_energy;
new_energy = compute_energy();
old_energy = (new_energy+1)*10; // BAGON changed init value to exceed current energy by factor of 10 (thanks to A. Khan)
while ( old_energy > new_energy && curr_cycle <= max_num_iterations)
{
old_energy = new_energy;
new_energy = oneExpansionIteration();
curr_cycle++;
}
return(new_energy);
}
/****************************************************************************/
void GCoptimization::scramble_label_table()
{
LabelType r1,r2,temp;
int num_times,cnt;
num_times = m_num_labels*2;
for ( cnt = 0; cnt < num_times; cnt++ )
{
r1 = rand()%m_num_labels;
r2 = rand()%m_num_labels;
temp = m_labelTable[r1];
m_labelTable[r1] = m_labelTable[r2];
m_labelTable[r2] = temp;
}
}
/**************************************************************************************/
GCoptimization::EnergyType GCoptimization::alpha_expansion(LabelType label)
{
terminateOnError( label < 0 || label >= m_num_labels,"Illegal Label to Expand On");
perform_alpha_expansion(label);
return(compute_energy());
}
/**************************************************************************************/
GCoptimization::EnergyType GCoptimization::alpha_expansion(LabelType alpha_label, PixelType *pixels, int num )
{
PixelType i,size = 0;
Energy *e = new Energy(mexErrMsgTxt, truncate_flag);
for ( i = 0; i<num ; i++ )
{
if ( m_labeling[pixels[i]] != alpha_label )
{
m_lookupPixVar[pixels[i]] = i;
}
}
if ( size > 0 )
{
Energy::Var *variables = (Energy::Var *) new Energy::Var[size];
for ( i = 0; i < size; i++ )
variables[i] = e ->add_variable();
if ( m_dataType == ARRAY ) add_t_links_ARRAY(e,variables,size,alpha_label);
else if ( m_dataType == FUNCTION_PIX ) add_t_links_FnPix(e,variables,size,alpha_label);
else add_t_links_FnCoord(e,variables,size,alpha_label);
if ( m_grid_graph )
{
if ( m_smoothType == ARRAY )
{
if (m_varying_weights) set_up_expansion_energy_G_ARRAY_VW_pix(size,alpha_label,e,variables,pixels,num);
else set_up_expansion_energy_G_ARRAY_pix(size,alpha_label,e,variables,pixels,num);
}
else if ( m_smoothType == FUNCTION_PIX ) {
mexErrMsgIdAndTxt("GraphCut:internal", "NOT SUPPORTED YET,exiting!");
// printf("NOT SUPPORTED YET,exiting!");
// exit(0);
//if ( m_smoothType == FUNCTION_PIX ) set_up_expansion_energy_G_FnPix_pix(size,alpha_label,e,variables);
}
else
{
mexErrMsgIdAndTxt("GraphCut:internal", "NOT SUPPORTED YET,exiting!");
// printf("NOT SUPPORTED YET,exiting!");
// exit(0);
//set_up_expansion_energy_G_FnCoord_pix(size,alpha_label,e,variables);
}
}
else
{
mexErrMsgIdAndTxt("GraphCut:internal", "NOT SUPPORTED YET,exiting!");
// printf("NOT SUPPORTED YET,exiting!");
// exit(0);
/*if ( m_smoothType == ARRAY ) set_up_expansion_energy_NG_ARRAY_pix(size,alpha_label,e,variables);
else if ( m_smoothType == FUNCTION_PIX ) set_up_expansion_energy_NG_FnPix_pix(size,alpha_label,e,variables);*/
}
e -> minimize();
for ( i = 0; i < num; i++ )
{
if ( m_labeling[pixels[i]] != alpha_label )
{
if ( e->get_var(variables[i]) == 0 )
m_labeling[pixels[i]] = alpha_label;
}
m_lookupPixVar[pixels[i]] = -1;
}
delete [] variables;
}
delete e;
return(compute_energy());
}
/**************************************************************************************/
void GCoptimization::add_t_links_ARRAY(Energy *e,Energy::Var *variables,int size,LabelType alpha_label)
{
for ( int i = 0; i < size; i++ )
e -> add_term1(variables[i], m_datacost(m_lookupPixVar[i],alpha_label),
m_datacost(m_lookupPixVar[i],m_labeling[m_lookupPixVar[i]]));
}
/**************************************************************************************/
void GCoptimization::add_t_links_FnPix(Energy *e,Energy::Var *variables,int size,LabelType alpha_label)
{
for ( int i = 0; i < size; i++ )
e -> add_term1(variables[i], m_dataFnPix(m_lookupPixVar[i],alpha_label),
m_dataFnPix(m_lookupPixVar[i],m_labeling[m_lookupPixVar[i]]));
}
/**************************************************************************************/
void GCoptimization::add_t_links_FnCoord(Energy *e,Energy::Var *variables,int size,LabelType alpha_label)
{
int x,y;
for ( int i = 0; i < size; i++ )
{
y = m_lookupPixVar[i]/m_width;
x = m_lookupPixVar[i] - y*m_width;
e -> add_term1(variables[i], m_dataFnCoord(x,y,alpha_label),
m_dataFnCoord(x,y,m_labeling[m_lookupPixVar[i]]));
}
}
/**************************************************************************************/
void GCoptimization::perform_alpha_expansion(LabelType alpha_label)
{
PixelType i,size = 0;
Energy *e = new Energy(mexErrMsgTxt, truncate_flag);
for ( i = 0; i < m_num_pixels; i++ )
{
if ( m_labeling[i] != alpha_label )
{
m_lookupPixVar[size] = i;
size++;
}
}
if ( size > 0 )
{
Energy::Var *variables = (Energy::Var *) new Energy::Var[size];
for ( i = 0; i < size; i++ )
variables[i] = e ->add_variable();
if ( m_dataType == ARRAY ) add_t_links_ARRAY(e,variables,size,alpha_label);
else if ( m_dataType == FUNCTION_PIX ) add_t_links_FnPix(e,variables,size,alpha_label);
else add_t_links_FnCoord(e,variables,size,alpha_label);
if ( m_grid_graph )
{
if ( m_smoothType == ARRAY )
{
if (m_varying_weights) set_up_expansion_energy_G_ARRAY_VW(size,alpha_label,e,variables);
else set_up_expansion_energy_G_ARRAY(size,alpha_label,e,variables);
}
else if ( m_smoothType == FUNCTION_PIX ) set_up_expansion_energy_G_FnPix(size,alpha_label,e,variables);
else set_up_expansion_energy_G_FnCoord(size,alpha_label,e,variables);
}
else
{
if ( m_smoothType == ARRAY ) set_up_expansion_energy_NG_ARRAY(size,alpha_label,e,variables);
else if ( m_smoothType == FUNCTION_PIX ) set_up_expansion_energy_NG_FnPix(size,alpha_label,e,variables);
}
e -> minimize();
for ( i = 0,size = 0; i < m_num_pixels; i++ )
{
if ( m_labeling[i] != alpha_label )
{
if ( e->get_var(variables[size]) == 0 )
m_labeling[i] = alpha_label;
size++;
}
}
delete [] variables;
}
delete e;
}
/**********************************************************************************************/
/* Performs alpha-expansion for non regular grid graph for case when energy terms are NOT */
/* specified by a function */
void GCoptimization::set_up_expansion_energy_NG_ARRAY(int size, LabelType alpha_label,Energy *e,Energy::Var *variables )
{
EnergyTermType weight;
Neighbor *tmp;
int i,nPix,pix;;
for ( i = size - 1; i >= 0; i-- )
{
pix = m_lookupPixVar[i];
m_lookupPixVar[pix] = i;
if ( !m_neighbors[pix].isEmpty() )
{
m_neighbors[pix].setCursorFront();
while ( m_neighbors[pix].hasNext() )
{
tmp = (Neighbor *) (m_neighbors[pix].next());
nPix = tmp->to_node;
weight = tmp->weight;
if ( m_labeling[nPix] != alpha_label )
{
if ( pix < nPix )
e ->add_term2(variables[i],variables[m_lookupPixVar[nPix]],
m_smoothcost(alpha_label,alpha_label)*weight,
m_smoothcost(alpha_label,m_labeling[nPix])*weight,
m_smoothcost(m_labeling[pix],alpha_label)*weight,
m_smoothcost(m_labeling[pix],m_labeling[nPix])*weight);
}
else
e ->add_term1(variables[i],m_smoothcost(alpha_label,alpha_label)*weight,
m_smoothcost(m_labeling[pix],alpha_label)*weight);
}
}
}
}
/**********************************************************************************************/
/* Performs alpha-expansion for non regular grid graph for case when energy terms are */
/* specified by a function */
void GCoptimization::set_up_expansion_energy_NG_FnPix(int size, LabelType alpha_label,Energy *e,Energy::Var *variables )
{
Neighbor *tmp;
int i,nPix,pix;
for ( i = size - 1; i >= 0; i-- )
{
pix = m_lookupPixVar[i];
m_lookupPixVar[pix] = i;
if ( !m_neighbors[pix].isEmpty() )
{
m_neighbors[pix].setCursorFront();
while ( m_neighbors[pix].hasNext() )
{
tmp = (Neighbor *) (m_neighbors[pix].next());
nPix = tmp->to_node;
if ( m_labeling[nPix] != alpha_label )
{
if ( pix < nPix )
e ->add_term2(variables[i],variables[m_lookupPixVar[nPix]],
m_smoothFnPix(pix,nPix,alpha_label,alpha_label),
m_smoothFnPix(pix,nPix,alpha_label,m_labeling[nPix]),
m_smoothFnPix(pix,nPix,m_labeling[pix],alpha_label),
m_smoothFnPix(pix,nPix,m_labeling[pix],m_labeling[nPix]));
}
else
e ->add_term1(variables[i],m_smoothFnPix(pix,nPix,alpha_label,m_labeling[nPix]),
m_smoothFnPix(pix,nPix,m_labeling[pix],alpha_label));
}
}
}
}
/**********************************************************************************************/
/* Performs alpha-expansion for regular grid graph for case when energy terms are NOT */
/* specified by a function */
void GCoptimization::set_up_expansion_energy_G_ARRAY_VW(int size, LabelType alpha_label,Energy *e,
Energy::Var *variables )
{
int i,nPix,pix,x,y;
EnergyTermType weight;
for ( i = size - 1; i >= 0; i-- )
{
pix = m_lookupPixVar[i];
y = pix/m_width;
x = pix - y*m_width;
m_lookupPixVar[pix] = i;
if ( x < m_width - 1 )
{
nPix = pix + 1;
weight = m_horizWeights[pix];
if ( m_labeling[nPix] != alpha_label )
e ->add_term2(variables[i],variables[m_lookupPixVar[nPix]],
m_smoothcost(alpha_label,alpha_label)*weight,
m_smoothcost(alpha_label,m_labeling[nPix])*weight,
m_smoothcost(m_labeling[pix],alpha_label)*weight,
m_smoothcost(m_labeling[pix],m_labeling[nPix])*weight);
else e ->add_term1(variables[i],m_smoothcost(alpha_label,m_labeling[nPix])*weight,
m_smoothcost(m_labeling[pix],alpha_label)*weight);
}
if ( y < m_height - 1 )
{
nPix = pix + m_width;
weight = m_vertWeights[pix];
if ( m_labeling[nPix] != alpha_label )
e ->add_term2(variables[i],variables[m_lookupPixVar[nPix]],
m_smoothcost(alpha_label,alpha_label)*weight ,
m_smoothcost(alpha_label,m_labeling[nPix])*weight,
m_smoothcost(m_labeling[pix],alpha_label)*weight ,
m_smoothcost(m_labeling[pix],m_labeling[nPix])*weight );
else e ->add_term1(variables[i],m_smoothcost(alpha_label,m_labeling[nPix])*weight,
m_smoothcost(m_labeling[pix],alpha_label)*weight);
}
if ( x > 0 )
{
nPix = pix - 1;
if ( m_labeling[nPix] == alpha_label )
e ->add_term1(variables[i],m_smoothcost(alpha_label,m_labeling[nPix])*m_horizWeights[nPix],
m_smoothcost(m_labeling[pix],alpha_label)*m_horizWeights[nPix]);
}
if ( y > 0 )
{
nPix = pix - m_width;
if ( m_labeling[nPix] == alpha_label )
e ->add_term1(variables[i],m_smoothcost(alpha_label,alpha_label)*m_vertWeights[nPix],
m_smoothcost(m_labeling[pix],alpha_label)*m_vertWeights[nPix]);
}
}
}
/**********************************************************************************************/
/* Performs alpha-expansion for regular grid graph for case when energy terms are NOT */
/* specified by a function */
void GCoptimization::set_up_expansion_energy_G_ARRAY(int size, LabelType alpha_label,Energy *e,
Energy::Var *variables )
{
int i,nPix,pix,x,y;
for ( i = size - 1; i >= 0; i-- )
{
pix = m_lookupPixVar[i];
y = pix/m_width;
x = pix - y*m_width;
m_lookupPixVar[pix] = i;
if ( x < m_width - 1 )
{
nPix = pix + 1;
if ( m_labeling[nPix] != alpha_label )
e ->add_term2(variables[i],variables[m_lookupPixVar[nPix]],
m_smoothcost(alpha_label,alpha_label),
m_smoothcost(alpha_label,m_labeling[nPix]),