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* Copyright (C) 2012 Thomas Oster <thomas.oster@rwth-aachen.de>
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* RWTH Aachen University - 52062 Aachen, Germany
*
* VisiCut 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 3 of the License, or
* (at your option) any later version.
*
* VisiCut 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 VisiCut. If not, see <http://www.gnu.org/licenses/>.
**/
package com.t_oster.liblasercut.dithering;
/**
*
* @author Thomas Oster <thomas.oster@rwth-aachen.de>
*/
public class Average extends DitheringAlgorithm
{
protected void doDithering()
{
long lumTotal = 0;
int pixelcount = 0;
int width = src.getWidth();
int height = src.getHeight();
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
lumTotal += src.getGreyScale(x, y);
}
setProgress((100 * pixelcount++) / (2 * height));
}
int thresh = (int) (lumTotal / height / width);
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
this.setBlack(x, y, src.getGreyScale(x, y) < thresh);
}
setProgress((100 * pixelcount++) / (2 * height));
}
}
}