corrade-vassal – Blame information for rev 1
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1 | vero | 1 | /* |
2 | * CVS identifier: |
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3 | * |
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4 | * $Id: SubbandRectROIMask.java,v 1.3 2001/02/28 14:53:12 grosbois Exp $ |
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5 | * |
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6 | * Class: ROI |
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7 | * |
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8 | * Description: This class describes the ROI mask for a subband |
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9 | * |
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10 | * |
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11 | * |
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12 | * COPYRIGHT: |
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13 | * |
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14 | * This software module was originally developed by Raphaël Grosbois and |
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15 | * Diego Santa Cruz (Swiss Federal Institute of Technology-EPFL); Joel |
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16 | * Askelöf (Ericsson Radio Systems AB); and Bertrand Berthelot, David |
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17 | * Bouchard, Félix Henry, Gerard Mozelle and Patrice Onno (Canon Research |
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18 | * Centre France S.A) in the course of development of the JPEG2000 |
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19 | * standard as specified by ISO/IEC 15444 (JPEG 2000 Standard). This |
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20 | * software module is an implementation of a part of the JPEG 2000 |
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21 | * Standard. Swiss Federal Institute of Technology-EPFL, Ericsson Radio |
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22 | * Systems AB and Canon Research Centre France S.A (collectively JJ2000 |
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23 | * Partners) agree not to assert against ISO/IEC and users of the JPEG |
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24 | * 2000 Standard (Users) any of their rights under the copyright, not |
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25 | * including other intellectual property rights, for this software module |
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26 | * with respect to the usage by ISO/IEC and Users of this software module |
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27 | * or modifications thereof for use in hardware or software products |
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28 | * claiming conformance to the JPEG 2000 Standard. Those intending to use |
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29 | * this software module in hardware or software products are advised that |
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30 | * their use may infringe existing patents. The original developers of |
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31 | * this software module, JJ2000 Partners and ISO/IEC assume no liability |
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32 | * for use of this software module or modifications thereof. No license |
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33 | * or right to this software module is granted for non JPEG 2000 Standard |
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34 | * conforming products. JJ2000 Partners have full right to use this |
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35 | * software module for his/her own purpose, assign or donate this |
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36 | * software module to any third party and to inhibit third parties from |
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37 | * using this software module for non JPEG 2000 Standard conforming |
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38 | * products. This copyright notice must be included in all copies or |
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39 | * derivative works of this software module. |
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40 | * |
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41 | * Copyright (c) 1999/2000 JJ2000 Partners. |
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42 | * */ |
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43 | using System; |
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44 | using CSJ2K.j2k.codestream.writer; |
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45 | using CSJ2K.j2k.wavelet.analysis; |
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46 | using CSJ2K.j2k.quantization; |
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47 | using CSJ2K.j2k.wavelet; |
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48 | using CSJ2K.j2k.image; |
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49 | using CSJ2K.j2k.util; |
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50 | using CSJ2K.j2k.roi; |
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51 | namespace CSJ2K.j2k.roi.encoder |
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52 | { |
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53 | |||
54 | /// <summary> This class describes the ROI mask for a single subband. Each object of the |
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55 | /// class contains the mask for a particular subband and also has references to |
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56 | /// the masks of the children subbands of the subband corresponding to this |
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57 | /// mask. This class describes subband masks for images containing only |
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58 | /// rectangular ROIS |
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59 | /// |
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60 | /// </summary> |
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61 | public class SubbandRectROIMask:SubbandROIMask |
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62 | { |
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63 | |||
64 | /// <summary>The upper left x coordinates of the applicable ROIs </summary> |
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65 | public int[] ulxs; |
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66 | |||
67 | /// <summary>The upper left y coordinates of the applicable ROIs </summary> |
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68 | public int[] ulys; |
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69 | |||
70 | /// <summary>The lower right x coordinates of the applicable ROIs </summary> |
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71 | public int[] lrxs; |
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72 | |||
73 | /// <summary>The lower right y coordinates of the applicable ROIs </summary> |
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74 | public int[] lrys; |
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75 | |||
76 | /// <summary> The constructor of the SubbandROIMask takes the dimensions of the |
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77 | /// subband as parameters. A tree of masks is generated from the subband |
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78 | /// sb. Each Subband contains the boundaries of each ROI. |
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79 | /// |
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80 | /// </summary> |
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81 | /// <param name="sb">The subband corresponding to this Subband Mask |
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82 | /// |
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83 | /// </param> |
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84 | /// <param name="ulxs">The upper left x coordinates of the ROIs |
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85 | /// |
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86 | /// </param> |
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87 | /// <param name="ulys">The upper left y coordinates of the ROIs |
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88 | /// |
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89 | /// </param> |
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90 | /// <param name="lrxs">The lower right x coordinates of the ROIs |
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91 | /// |
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92 | /// </param> |
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93 | /// <param name="lrys">The lower right y coordinates of the ROIs |
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94 | /// |
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95 | /// </param> |
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96 | /// <param name="lrys">The lower right y coordinates of the ROIs |
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97 | /// |
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98 | /// </param> |
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99 | /// <param name="nr">Number of ROIs that affect this tile |
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100 | /// |
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101 | /// </param> |
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102 | public SubbandRectROIMask(Subband sb, int[] ulxs, int[] ulys, int[] lrxs, int[] lrys, int nr):base(sb.ulx, sb.uly, sb.w, sb.h) |
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103 | { |
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104 | this.ulxs = ulxs; |
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105 | this.ulys = ulys; |
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106 | this.lrxs = lrxs; |
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107 | this.lrys = lrys; |
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108 | int r; |
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109 | |||
110 | if (sb.isNode) |
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111 | { |
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112 | isNode = true; |
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113 | // determine odd/even - high/low filters |
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114 | int horEvenLow = sb.ulcx % 2; |
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115 | int verEvenLow = sb.ulcy % 2; |
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116 | |||
117 | // Get filter support lengths |
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118 | WaveletFilter hFilter = sb.HorWFilter; |
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119 | WaveletFilter vFilter = sb.VerWFilter; |
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120 | int hlnSup = hFilter.SynLowNegSupport; |
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121 | int hhnSup = hFilter.SynHighNegSupport; |
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122 | int hlpSup = hFilter.SynLowPosSupport; |
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123 | int hhpSup = hFilter.SynHighPosSupport; |
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124 | int vlnSup = vFilter.SynLowNegSupport; |
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125 | int vhnSup = vFilter.SynHighNegSupport; |
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126 | int vlpSup = vFilter.SynLowPosSupport; |
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127 | int vhpSup = vFilter.SynHighPosSupport; |
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128 | |||
129 | // Generate arrays for children |
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130 | int x, y; |
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131 | int[] lulxs = new int[nr]; |
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132 | int[] lulys = new int[nr]; |
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133 | int[] llrxs = new int[nr]; |
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134 | int[] llrys = new int[nr]; |
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135 | int[] hulxs = new int[nr]; |
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136 | int[] hulys = new int[nr]; |
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137 | int[] hlrxs = new int[nr]; |
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138 | int[] hlrys = new int[nr]; |
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139 | for (r = nr - 1; r >= 0; r--) |
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140 | { |
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141 | // For all ROI calculate ... |
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142 | // Upper left x for all children |
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143 | x = ulxs[r]; |
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144 | if (horEvenLow == 0) |
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145 | { |
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146 | lulxs[r] = (x + 1 - hlnSup) / 2; |
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147 | hulxs[r] = (x - hhnSup) / 2; |
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148 | } |
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149 | else |
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150 | { |
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151 | lulxs[r] = (x - hlnSup) / 2; |
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152 | hulxs[r] = (x + 1 - hhnSup) / 2; |
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153 | } |
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154 | // Upper left y for all children |
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155 | y = ulys[r]; |
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156 | if (verEvenLow == 0) |
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157 | { |
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158 | lulys[r] = (y + 1 - vlnSup) / 2; |
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159 | hulys[r] = (y - vhnSup) / 2; |
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160 | } |
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161 | else |
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162 | { |
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163 | lulys[r] = (y - vlnSup) / 2; |
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164 | hulys[r] = (y + 1 - vhnSup) / 2; |
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165 | } |
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166 | // lower right x for all children |
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167 | x = lrxs[r]; |
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168 | if (horEvenLow == 0) |
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169 | { |
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170 | llrxs[r] = (x + hlpSup) / 2; |
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171 | hlrxs[r] = (x - 1 + hhpSup) / 2; |
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172 | } |
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173 | else |
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174 | { |
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175 | llrxs[r] = (x - 1 + hlpSup) / 2; |
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176 | hlrxs[r] = (x + hhpSup) / 2; |
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177 | } |
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178 | // lower right y for all children |
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179 | y = lrys[r]; |
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180 | if (verEvenLow == 0) |
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181 | { |
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182 | llrys[r] = (y + vlpSup) / 2; |
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183 | hlrys[r] = (y - 1 + vhpSup) / 2; |
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184 | } |
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185 | else |
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186 | { |
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187 | llrys[r] = (y - 1 + vlpSup) / 2; |
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188 | hlrys[r] = (y + vhpSup) / 2; |
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189 | } |
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190 | } |
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191 | // Create children |
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192 | hh = new SubbandRectROIMask(sb.HH, hulxs, hulys, hlrxs, hlrys, nr); |
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193 | lh = new SubbandRectROIMask(sb.LH, lulxs, hulys, llrxs, hlrys, nr); |
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194 | hl = new SubbandRectROIMask(sb.HL, hulxs, lulys, hlrxs, llrys, nr); |
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195 | ll = new SubbandRectROIMask(sb.LL, lulxs, lulys, llrxs, llrys, nr); |
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196 | } |
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197 | } |
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198 | } |
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199 | } |