svn-gvsig-desktop / trunk / libraries / libRaster / src / org / gvsig / raster / grid / filter / convolution / ConvolutionIntegerFilter.java @ 27361
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package org.gvsig.raster.grid.filter.convolution; |
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import org.gvsig.raster.buffer.RasterBuffer; |
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import org.gvsig.raster.dataset.IBuffer; |
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/**
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* Filtro de convolucion para Buffer de tipo Int
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* @author Alejandro Mu?oz <alejandro.munoz@uclm.es>
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* @author Diego Guerrero Sevilla <diego.guerrero@uclm.es>
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* */
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public class ConvolutionIntegerFilter extends ConvolutionFilter { |
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public ConvolutionIntegerFilter(){
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super();
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} |
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/**
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* @param Kernel a aplicar. En caso de que no se trate de un kernel definido en ConvolutionFilter, se puede pasar como
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* parametro el kernel se pretende aplicar.
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* **/
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public ConvolutionIntegerFilter(Kernel k){ |
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super();
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super.kernel=k;
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} |
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public void pre(){ |
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super.pre();
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rasterResult = RasterBuffer.getBuffer(IBuffer.TYPE_INT, raster.getWidth(), raster.getHeight(), raster.getBandCount(), true);
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} |
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/** Aplicacion del filtro para el pixel de la posicion line, col */
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public void process(int col, int line) throws InterruptedException { |
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int lado = kernel.getLado();
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int semiLado = (lado - 1) >> 1; |
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double ventana[][] = new double[lado][lado]; |
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double resultConvolution = 0; |
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for (int band = 0; band < raster.getBandCount(); band++) { |
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if ((col - semiLado >= 0) && (line - semiLado >= 0) && (col + semiLado < width) && (line + semiLado < height)) { |
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for (int j = -semiLado; j <= semiLado; j++) |
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for (int i = -semiLado; i <= semiLado; i++) |
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ventana[i + semiLado][j + semiLado] = raster.getElemInt(line + j, col + i, band) & 0xff;
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Kernel Kventana = new Kernel(ventana); |
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resultConvolution = kernel.convolution(Kventana); |
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if (resultConvolution > Integer.MAX_VALUE) |
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resultConvolution = Integer.MAX_VALUE;
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else
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if (resultConvolution < 0) |
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resultConvolution = 0;
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rasterResult.setElem(line, col, band, (int) resultConvolution);
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} else
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rasterResult.setElem(line, col, band, raster.getElemInt(line, col, band)); |
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} |
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} |
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/**
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* @return tipo de dato del buffer de entrada
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* */
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public int getInRasterDataType() { |
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return RasterBuffer.TYPE_INT;
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} |
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/**
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* @return tipo de dato del buffer de salida
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* */
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public int getOutRasterDataType() { |
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return RasterBuffer.TYPE_INT;
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} |
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/**
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* @return buffer resultante tras aplicar el filtro
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* */
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public Object getResult(String name) { |
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if (name.equals("raster")) |
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return this.rasterResult; |
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return null; |
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} |
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} |