/*
* This file is part of the LIRE project: http://lire-project.net
* LIRE is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* LIRE is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with LIRE; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* We kindly ask you to refer the any or one of the following publications in
* any publication mentioning or employing Lire:
*
* Lux Mathias, Savvas A. Chatzichristofis. Lire: Lucene Image Retrieval –
* An Extensible Java CBIR Library. In proceedings of the 16th ACM International
* Conference on Multimedia, pp. 1085-1088, Vancouver, Canada, 2008
* URL: http://doi.acm.org/10.1145/1459359.1459577
*
* Lux Mathias. Content Based Image Retrieval with LIRE. In proceedings of the
* 19th ACM International Conference on Multimedia, pp. 735-738, Scottsdale,
* Arizona, USA, 2011
* URL: http://dl.acm.org/citation.cfm?id=2072432
*
* Mathias Lux, Oge Marques. Visual Information Retrieval using Java and LIRE
* Morgan & Claypool, 2013
* URL: http://www.morganclaypool.com/doi/abs/10.2200/S00468ED1V01Y201301ICR025
*
* Copyright statement:
* --------------------
* (c) 2002-2013 by Mathias Lux (mathias@juggle.at)
* http://www.semanticmetadata.net/lire, http://www.lire-project.net
*/
package net.semanticmetadata.lire.imageanalysis.features.global.fcth;
/**
* The FCTH feature was created, implemented and provided by Savvas A. Chatzichristofis<br/>
* More information can be found in: Savvas A. Chatzichristofis and Yiannis S. Boutalis,
* <i>FCTH: Fuzzy Color and Texture Histogram - A Low Level Feature for Accurate Image
* Retrieval</i>, in Proceedings of the Ninth International Workshop on Image Analysis for
* Multimedia Interactive Services, IEEE, Klagenfurt, May, 2008.
*
* @author: Savvas A. Chatzichristofis, savvash@gmail.com
*/
public class FuzzyFCTHpart {
public double[] ResultsTable = new double[8];
public double[] HorizontalMembershipValues = {0, 0, 20, 90, 20, 90, 255, 255};
public double[] VerticalMembershipValues = {0, 0, 20, 90, 20, 90, 255, 255};
public double[] EnergyMembershipValues = {0, 0, 20, 80, 20, 80, 255, 255};
public FuzzyRules[] TextureRules = new FuzzyRules[8];
public double[] FCTH = new double[192];
public double[] HActivation = new double[2];
public double[] VActivation = new double[2];
public double[] EActivation = new double[2];
public int[][] RulesDefinition = {
{0, 0, 0, 0},
{0, 0, 1, 1},
{0, 1, 0, 2},
{0, 1, 1, 3},
{1, 0, 0, 4},
{1, 0, 1, 5},
{1, 1, 0, 6},
{1, 1, 1, 7}};
public FuzzyFCTHpart() {
for (int R = 0; R < 8; R++) {
TextureRules[R] = new FuzzyRules();
TextureRules[R].Input1 = RulesDefinition[R][0];
TextureRules[R].Input2 = RulesDefinition[R][1];
TextureRules[R].Input3 = RulesDefinition[R][2];
TextureRules[R].Output = RulesDefinition[R][3];
}
}
private void FindMembershipValueForTriangles(double Input, double[] Triangles, double[] MembershipFunctionToSave) {
int Temp = 0;
for (int i = 0; i <= Triangles.length - 1; i += 4) {
MembershipFunctionToSave[Temp] = 0;
if (Input >= Triangles[i + 1] && Input <= +Triangles[i + 2]) {
MembershipFunctionToSave[Temp] = 1;
}
if (Input >= Triangles[i] && Input < Triangles[i + 1]) {
MembershipFunctionToSave[Temp] = (Input - Triangles[i]) / (Triangles[i + 1] - Triangles[i]);
}
if (Input > Triangles[i + 2] && Input <= Triangles[i + 3]) {
MembershipFunctionToSave[Temp] = (Input - Triangles[i + 2]) / (Triangles[i + 2] - Triangles[i + 3]) + 1;
}
Temp += 1;
}
}
private void LOM_Defazzificator(FuzzyRules[] Rules, double[] Input1, double[] Input2, double[] Input3, double[] ResultTable) {
int RuleActivation = -1;
double LOM_MAXofMIN = 0;
for (int i = 0; i < Rules.length; i++) {
if ((Input1[Rules[i].Input1] > 0) && (Input2[Rules[i].Input2] > 0) && (Input3[Rules[i].Input3] > 0)) {
double Min = 0;
Min = Math.min(Input1[Rules[i].Input1], Math.min(Input2[Rules[i].Input2], Input3[Rules[i].Input3]));
if (Min > LOM_MAXofMIN) {
LOM_MAXofMIN = Min;
RuleActivation = Rules[i].Output;
}
}
}
ResultTable[RuleActivation]++;
}
private void MultiParticipate_Equal_Defazzificator(FuzzyRules[] Rules, double[] Input1, double[] Input2, double[] Input3, double[] ResultTable) {
int RuleActivation = -1;
for (int i = 0; i < Rules.length; i++) {
if ((Input1[Rules[i].Input1] > 0) && (Input2[Rules[i].Input2] > 0) && (Input3[Rules[i].Input3] > 0)) {
RuleActivation = Rules[i].Output;
ResultTable[RuleActivation]++;
}
}
}
private void MultiParticipate_Defazzificator(FuzzyRules[] Rules, double[] Input1, double[] Input2, double[] Input3, double[] ResultTable) {
int RuleActivation = -1;
for (int i = 0; i < Rules.length; i++) {
if ((Input1[Rules[i].Input1] > 0) && (Input2[Rules[i].Input2] > 0) && (Input3[Rules[i].Input3] > 0)) {
RuleActivation = Rules[i].Output;
double Min = 0;
Min = Math.min(Input1[Rules[i].Input1], Math.min(Input2[Rules[i].Input2], Input3[Rules[i].Input3]));
ResultTable[RuleActivation] += Min;
}
}
}
public double[] ApplyFilter(double F1, double F2, double F3, double[] ColorValues, int Method, int NumberOfColors) {
// Method 0 = LOM
// 1 = Multi Equal Participate
// 2 = Multi Participate
for (int i = 0; i < 8; i++) {
ResultsTable[i] = 0;
}
FindMembershipValueForTriangles(F1, HorizontalMembershipValues, HActivation);
FindMembershipValueForTriangles(F2, VerticalMembershipValues, VActivation);
FindMembershipValueForTriangles(F3, EnergyMembershipValues, EActivation);
if (Method == 0) LOM_Defazzificator(TextureRules, HActivation, VActivation, EActivation, ResultsTable);
if (Method == 1)
MultiParticipate_Equal_Defazzificator(TextureRules, HActivation, VActivation, EActivation, ResultsTable);
if (Method == 2)
MultiParticipate_Defazzificator(TextureRules, HActivation, VActivation, EActivation, ResultsTable);
for (int i = 0; i < 8; i++) {
if (ResultsTable[i] > 0) {
for (int j = 0; j < NumberOfColors; j++) {
if (ColorValues[j] > 0) FCTH[NumberOfColors * i + j] += ResultsTable[i] * ColorValues[j];
}
}
}
return (FCTH);
}
}