2 * PROJECT: NyARToolkit
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3 * --------------------------------------------------------------------------------
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4 * This work is based on the original ARToolKit developed by
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7 * HITLab, University of Washington, Seattle
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8 * http://www.hitl.washington.edu/artoolkit/
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10 * The NyARToolkit is Java edition ARToolKit class library.
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11 * Copyright (C)2008-2009 Ryo Iizuka
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13 * This program is free software: you can redistribute it and/or modify
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14 * it under the terms of the GNU General Public License as published by
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15 * the Free Software Foundation, either version 3 of the License, or
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16 * (at your option) any later version.
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18 * This program is distributed in the hope that it will be useful,
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19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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21 * GNU General Public License for more details.
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23 * You should have received a copy of the GNU General Public License
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24 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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26 * For further information please contact.
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27 * http://nyatla.jp/nyatoolkit/
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28 * <airmail(at)ebony.plala.or.jp> or <nyatla(at)nyatla.jp>
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31 package jp.nyatla.nyartoolkit.core.rasterfilter;
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33 import jp.nyatla.nyartoolkit.NyARException;
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34 import jp.nyatla.nyartoolkit.core.raster.*;
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35 import jp.nyatla.nyartoolkit.core.rasterfilter.INyARRasterFilter;
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36 import jp.nyatla.nyartoolkit.core.types.NyARBufferType;
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37 import jp.nyatla.nyartoolkit.core.types.NyARIntSize;
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40 * エッジ検出フィルタ 入力 BUFFERFORMAT_INT2D 出力 BUFFERFORMAT_INT2D
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42 public class NyARRasterFilter_Edge implements INyARRasterFilter
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44 public void doFilter(INyARRaster i_input, INyARRaster i_output) throws NyARException
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46 assert (i_input.isEqualBufferType(NyARBufferType.INT1D_GRAY_8));
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47 assert (i_output.isEqualBufferType(NyARBufferType.INT1D_GRAY_8));
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48 assert (i_input.getSize().isEqualSize(i_output.getSize()) == true);
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50 int[] out_buf = (int[]) i_output.getBuffer();
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51 int[] in_buf = (int[]) i_input.getBuffer();
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54 NyARIntSize size = i_output.getSize();
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55 for (int y = 1; y < size.h; y++) {
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57 for (int x = 1; x < size.w; x++) {
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58 int w = in_buf[y* size.w+x];
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59 out_buf[y* size.w+x] = (Math.abs(w - prev) + Math.abs(w - in_buf[(y - 1)* size.w+x])) / 2;
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