root / trunk / libraries / libRaster / src / org / gvsig / raster / grid / filter / convolution / ConvolutionShortFilter.java @ 12176
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| 1 | 12095 | dguerrero | package org.gvsig.raster.grid.filter.convolution; |
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| 2 | |||
| 3 | import org.gvsig.raster.buffer.RasterBuffer; |
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| 4 | import org.gvsig.raster.dataset.IBuffer; |
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| 5 | |||
| 6 | 12137 | dguerrero | /**
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| 7 | * Filtro de convolucion para Buffer de tipo Short
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| 8 | * @author Alejandro Mu?oz <alejandro.munoz@uclm.es>
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| 9 | * @author Diego Guerrero Sevilla <diego.guerrero@uclm.es>
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| 10 | * */
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| 11 | 12095 | dguerrero | public class ConvolutionShortFilter extends ConvolutionFilter { |
| 12 | |||
| 13 | protected IBuffer rasterResult = null; |
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| 14 | |||
| 15 | |||
| 16 | public ConvolutionShortFilter(){
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| 17 | super();
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| 18 | } |
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| 19 | |||
| 20 | 12137 | dguerrero | /**
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| 21 | * @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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| 22 | * parametro el kernel se pretende aplicar.
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| 23 | * **/
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| 24 | public ConvolutionShortFilter(Kernel k){ |
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| 25 | super();
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| 26 | super.kernel=k;
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| 27 | } |
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| 28 | |||
| 29 | 12095 | dguerrero | public void pre(){ |
| 30 | super.pre();
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| 31 | rasterResult = RasterBuffer.getBuffer(IBuffer.TYPE_SHORT, raster.getWidth(), raster.getHeight(), raster.getBandCount(), true);
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| 32 | } |
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| 33 | |||
| 34 | 12137 | dguerrero | /** Aplicacion del filtro para el pixel de la posicion line, col */
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| 35 | 12095 | dguerrero | public void process(int col, int line) { |
| 36 | |||
| 37 | 12137 | dguerrero | int lado= kernel.getLado();
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| 38 | 12176 | dguerrero | int semiLado = (lado - 1) >> 1; |
| 39 | 12137 | dguerrero | double ventana[][]= new double[lado][lado]; |
| 40 | 12095 | dguerrero | short resultConvolution=0; |
| 41 | 12176 | dguerrero | for (int band = 0; band < raster.getBandCount(); band++) { |
| 42 | if ((col - semiLado >= 0) && (line - semiLado >= 0) && (col + semiLado < width) && (line + semiLado < height)){ |
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| 43 | for (int j = -semiLado; j <= semiLado; j++) |
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| 44 | for (int i = -semiLado; i <= semiLado; i++) |
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| 45 | ventana[i + semiLado][j + semiLado] = raster.getElemShort(line + j, col + i, band)&0xff;;
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| 46 | 12095 | dguerrero | Kernel Kventana= new Kernel(ventana); |
| 47 | resultConvolution=(short)kernel.convolution(Kventana);
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| 48 | 12176 | dguerrero | rasterResult.setElem(line, col, band,(short)resultConvolution);
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| 49 | 12095 | dguerrero | } |
| 50 | 12176 | dguerrero | else rasterResult.setElem(line, col,band,(short)raster.getElemShort(line,col,band)); |
| 51 | } |
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| 52 | 12095 | dguerrero | } |
| 53 | |||
| 54 | 12137 | dguerrero | /**
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| 55 | * @return tipo de dato del buffer de entrada
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| 56 | * */
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| 57 | public int getInRasterDataType() { |
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| 58 | return RasterBuffer.TYPE_SHORT;
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| 59 | } |
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| 60 | 12095 | dguerrero | |
| 61 | 12137 | dguerrero | /**
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| 62 | * @return tipo de dato del buffer de salida
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| 63 | * */
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| 64 | public int getOutRasterDataType() { |
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| 65 | return RasterBuffer.TYPE_SHORT;
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| 66 | } |
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| 67 | 12095 | dguerrero | |
| 68 | 12137 | dguerrero | /**
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| 69 | * @return buffer resultante tras aplicar el filtro
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| 70 | * */
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| 71 | public Object getResult(String name) { |
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| 72 | if (name.equals("raster")) |
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| 73 | return (Object) this.rasterResult; |
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| 74 | return null; |
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| 75 | } |
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| 76 | 12095 | dguerrero | |
| 77 | } |