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FuzzifyDistance.java
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FuzzifyDistance.java
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/*============================================================================
* Title : Auto-Zoom Function Of A Digital Camera Using Fuzzy Logic
* Description : An auto-zoom function for a digital camera that uses Fuzzy
* Logic to decide on the level of zoom the camera must use in a
* certain distance between the camera and the object to be
* photographed.
* Filename : FuzzifyDistance.java
* Version : v1.0
* Author : Group 1
* Yr&Sec : 3-3
* Subject : Computational Intelligence
*============================================================================*/
public class FuzzifyDistance {
/*============================================================================*
* Function : FuzzifyDistance
* Params : fltDistance -> The value of distance.
* strMembership ->
* Returns : dblFuzzyDistance
* Description: This is the function where the necessary methods will be
* executed.
*============================================================================*/
public double FuzzifyDistance(float fltDistance, String strMembership) {
//======================== Initialization ========================//
double dblFuzzyDistance = 0;
//================================================================//
//========================== Code Body ===========================//
/* Distance: Too Near */
if(strMembership.equals("TooNear")) {
if(fltDistance > 5)
dblFuzzyDistance = 0;
// Right-side slope of Distance: Too Near
else if(fltDistance < 5 && fltDistance > 0)
dblFuzzyDistance = (double) -0.2 * fltDistance + 1;
// Peak of trapmf
else if(fltDistance <= 0)
dblFuzzyDistance = 1;
}
/* Distance: Near */
else if(strMembership.equals("Near")) {
if(fltDistance < 4)
dblFuzzyDistance = 0;
// Left-side slope of Distance: Near
else if(fltDistance < 10 && fltDistance >= 4)
dblFuzzyDistance = (double) 0.16666666666666666666666666666667 *
fltDistance - 0.66666666666666666666666666666667;
// Peak of trimf
else if(fltDistance == 10)
dblFuzzyDistance = 1;
// Right-side slope of Distance: Near
else if(fltDistance < 12 && fltDistance > 10)
dblFuzzyDistance = (double) -0.5 * fltDistance + 6;
else if(fltDistance >= 12)
dblFuzzyDistance = 0;
}
/* Distance: Medium */
else if(strMembership.equals("Medium")) {
if(fltDistance < 10)
dblFuzzyDistance = 0;
// Left-side slope of Distance: Medium
else if(fltDistance < 13 && fltDistance >= 10)
dblFuzzyDistance = (double) 0.33333333333333333333333333333333 *
fltDistance - 3.3333333333333333333333333333333;
// Peak of trimf
else if(fltDistance == 13)
dblFuzzyDistance = 1;
// Right-side slope of Distance: Medium
else if(fltDistance < 25 && fltDistance > 13)
dblFuzzyDistance = (double) -0.08333333333333333333333333333333 *
fltDistance + 2.0833333333333333333333333333333;
else if(fltDistance >= 25)
dblFuzzyDistance = 0;
}
/* Distance: Far */
else if(strMembership.equals("Far")) {
if(fltDistance <= 20)
dblFuzzyDistance = 0;
// Left-side slope of Distance: Far
else if(fltDistance < 30 && fltDistance > 20)
dblFuzzyDistance = (double) 0.1 * fltDistance - 2;
else if(fltDistance == 30)
dblFuzzyDistance = 1;
// Right-side slope of Distance: Far
else if(fltDistance < 45 && fltDistance > 30)
dblFuzzyDistance = (double) -0.06666666666666666666666666666667 *
fltDistance + 3;
else if(fltDistance >= 45)
dblFuzzyDistance = 0;
}
/* Distance: Too Far */
else if(strMembership.equals("TooFar")) {
if(fltDistance <= 40)
dblFuzzyDistance = 0;
// Left-side slope of Distance: Too Far
else if(fltDistance < 45 && fltDistance > 40)
dblFuzzyDistance = (double) .2 * fltDistance - 8;
// Peak of trapmf
else if(fltDistance >= 45)
dblFuzzyDistance = 1;
}
return dblFuzzyDistance;
//================================================================//
}
}