/*
* 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 ThresholdFilter implements IImageFilter{
private float Threshold = 0.5f;
//@Override
public Image process(Image imageIn) {
int r, g, b;
int threshold = (int)(this.Threshold * 255f);
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);
int rgb = (((r * 0x1b36) + (g * 0x5b8c)) + (b * 0x93e)) >> 15;
r = g = b = rgb > threshold ? 0xff : 0;
imageIn.setPixelColor(x,y,r,g,b);
}
}
return imageIn;
}
}