svn-gvsig-desktop / trunk / libraries / libCq CMS for java.old / src / org / cresques / io / raster / LinearEnhancementShortFilter.java @ 4578
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1 | 2809 | nacho | /*
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2 | * Cresques Mapping Suite. Graphic Library for constructing mapping applications.
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3 | *
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4 | * Copyright (C) 2004-5.
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5 | *
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6 | * This program is free software; you can redistribute it and/or
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7 | * modify it under the terms of the GNU General Public License
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8 | * as published by the Free Software Foundation; either version 2
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9 | * of the License, or (at your option) any later version.
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10 | *
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11 | * This program is distributed in the hope that it will be useful,
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | * GNU General Public License for more details.
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15 | *
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16 | * You should have received a copy of the GNU General Public License
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17 | * along with this program; if not, write to the Free Software
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18 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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19 | *
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20 | * For more information, contact:
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21 | *
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22 | * cresques@gmail.com
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23 | */
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24 | package org.cresques.io.raster; |
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25 | |||
26 | |||
27 | /**
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28 | * Realzado Lineal (Amplitude Rescaling) para imagenes de 16 bits.
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29 | * @author Luis W. Sevilla (sevilla_lui@gva.es)
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30 | * @author Nacho Brodin (brodin_ign@gva.es)
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31 | */
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32 | public class LinearEnhancementShortFilter extends LinearEnhancementFilter { |
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33 | /**
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34 | * Constructor
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35 | */
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36 | public LinearEnhancementShortFilter() {
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37 | super();
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38 | } |
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39 | |||
40 | /* (non-Javadoc)
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41 | * @see org.cresques.io.raster.IRasterFilter#pre()
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42 | */
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43 | public void pre() { |
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44 | //Obtenci?n de par?metros
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45 | this.raster = (RasterBuf) params.get("raster"); |
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46 | this.stats = (RasterStats) params.get("stats"); |
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47 | this.removeExtrema = ((Boolean) params.get("remove")).booleanValue(); |
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48 | this.filename = (String) params.get("filename"); |
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49 | height = raster.getHeight(); |
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50 | width = raster.getWidth(); |
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51 | super.pre();
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52 | } |
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53 | |||
54 | /* (non-Javadoc)
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55 | * @see org.cresques.io.raster.IRasterFilter#process(int, int)
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56 | */
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57 | public void process(int x, int y) { |
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58 | raster.getElemInt(x, y, px); |
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59 | |||
60 | int bandsCnt = 3; // Esto hay que sacarlo de fuera, l?gicamente. |
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61 | |||
62 | for (int i = 0; i < bandsCnt; i++) { |
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63 | if (px[i] > maxBandValue[i]) {
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64 | px[i] = maxBandValue[i]; |
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65 | } else if (px[i] < minBandValue[i]) { |
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66 | px[i] = minBandValue[i]; |
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67 | } |
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68 | |||
69 | px[i] = (((int) ((((double) px[i]) * scale[i]) + offset[i])) & |
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70 | 0xff);
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71 | } |
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72 | |||
73 | raster.setElemInt(x, y, px); |
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74 | } |
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75 | |||
76 | /* (non-Javadoc)
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77 | * @see org.cresques.io.raster.IRasterFilter#getResult(java.lang.String)
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78 | */
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79 | public Object getResult(String name) { |
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80 | if (name.equals("raster")) { |
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81 | return (Object) this.raster; |
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82 | } else {
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83 | return null; |
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84 | } |
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85 | } |
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86 | |||
87 | /* (non-Javadoc)
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88 | * @see org.cresques.io.raster.IRasterFilter#getInRasterDataType()
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89 | */
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90 | public int getInRasterDataType() { |
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91 | return RasterBuf.TYPE_SHORT;
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92 | } |
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93 | |||
94 | /* (non-Javadoc)
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95 | * @see org.cresques.io.raster.IRasterFilter#getOutRasterDataType()
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96 | */
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97 | public int getOutRasterDataType() { |
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98 | return RasterBuf.TYPE_SHORT;
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99 | } |
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100 | |||
101 | /* (non-Javadoc)
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102 | * @see org.cresques.io.raster.IRasterFilter#post()
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103 | */
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104 | public void post() { |
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105 | } |
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106 | |||
107 | /* (non-Javadoc)
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108 | * @see org.cresques.io.raster.RasterFilter#processLine(int)
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109 | */
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110 | public void processLine(int y) { |
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111 | } |
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112 | } |