/*
* HaoRan ImageFilter Classes v0.1
* Copyright (C) 2012 Zhenjun Dai
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by the
* Free Software Foundation; either version 2.1 of the License, or (at your
* option) any later version.
*
* This library 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 Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; if not, write to the Free Software Foundation.
*/
package com.marshalchen.common.uimodule.ImageFilter;
/**
* �����Ч
* @author daizhj
*
*/
public class NoiseFilter implements IImageFilter{
public float Intensity = 0.2f;
public static int getRandomInt(int a, int b) {
int min = Math.min(a, b);
int max = Math.max(a, b);
return min + (int)(Math.random() * (max - min + 1));
}
//@Override
public Image process(Image imageIn) {
int r, g, b, a;
int num = (int)(this.Intensity * 32768f);
for (int x = 0; x < imageIn.getWidth(); x++) {
for (int y = 0; y < imageIn.getHeight(); y++) {
r = imageIn.getRComponent(x, y);
g = imageIn.getGComponent(x, y);
b = imageIn.getBComponent(x, y);
if (num != 0){
int rr = getRandomInt(-255, 0xff) * num;
int gg = getRandomInt(-255, 0xff) * num;
int bb = getRandomInt(-255, 0xff) * num;
int rrr = r + (rr >> 15);
int ggg = g + (gg >> 15);
int bbb = b + (bb >> 15);
r = (rrr > 0xff) ? ((byte)0xff) : ((rrr < 0) ? ((byte)0) : ((byte)rrr));
g = (ggg > 0xff) ? ((byte)0xff) : ((ggg < 0) ? ((byte)0) : ((byte)ggg));
b = (bbb > 0xff) ? ((byte)0xff) : ((bbb < 0) ? ((byte)0) : ((byte)bbb));
}
imageIn.setPixelColor(x,y,r,g,b);
}
}
return imageIn;
}
}