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: ForwWT.java,v 1.9 2001/10/24 12:02:13 grosbois Exp $ |
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5 | * |
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6 | * Class: ForwWT |
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7 | * |
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8 | * Description: The interface for implementations of a forward |
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9 | * wavelet transform. |
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10 | * |
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11 | * |
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12 | * |
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13 | * COPYRIGHT: |
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14 | * |
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15 | * This software module was originally developed by Raphaël Grosbois and |
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16 | * Diego Santa Cruz (Swiss Federal Institute of Technology-EPFL); Joel |
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17 | * Askelöf (Ericsson Radio Systems AB); and Bertrand Berthelot, David |
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18 | * Bouchard, Félix Henry, Gerard Mozelle and Patrice Onno (Canon Research |
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19 | * Centre France S.A) in the course of development of the JPEG2000 |
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20 | * standard as specified by ISO/IEC 15444 (JPEG 2000 Standard). This |
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21 | * software module is an implementation of a part of the JPEG 2000 |
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22 | * Standard. Swiss Federal Institute of Technology-EPFL, Ericsson Radio |
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23 | * Systems AB and Canon Research Centre France S.A (collectively JJ2000 |
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24 | * Partners) agree not to assert against ISO/IEC and users of the JPEG |
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25 | * 2000 Standard (Users) any of their rights under the copyright, not |
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26 | * including other intellectual property rights, for this software module |
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27 | * with respect to the usage by ISO/IEC and Users of this software module |
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28 | * or modifications thereof for use in hardware or software products |
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29 | * claiming conformance to the JPEG 2000 Standard. Those intending to use |
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30 | * this software module in hardware or software products are advised that |
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31 | * their use may infringe existing patents. The original developers of |
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32 | * this software module, JJ2000 Partners and ISO/IEC assume no liability |
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33 | * for use of this software module or modifications thereof. No license |
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34 | * or right to this software module is granted for non JPEG 2000 Standard |
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35 | * conforming products. JJ2000 Partners have full right to use this |
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36 | * software module for his/her own purpose, assign or donate this |
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37 | * software module to any third party and to inhibit third parties from |
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38 | * using this software module for non JPEG 2000 Standard conforming |
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39 | * products. This copyright notice must be included in all copies or |
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40 | * derivative works of this software module. |
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41 | * |
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42 | * Copyright (c) 1999/2000 JJ2000 Partners. |
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43 | * */ |
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44 | using System; |
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45 | using CSJ2K.j2k.wavelet; |
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46 | namespace CSJ2K.j2k.wavelet.analysis |
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47 | { |
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48 | |||
49 | /// <summary> This interface extends the WaveletTransform with the specifics of forward |
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50 | /// wavelet transforms. Classes that implement forward wavelet transfoms should |
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51 | /// implement this interface. |
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52 | /// |
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53 | /// <p>This class does not define the methods to transfer data, just the |
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54 | /// specifics to forward wavelet transform. Different data transfer methods are |
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55 | /// evisageable for different transforms.</p> |
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56 | /// |
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57 | /// </summary> |
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58 | public interface ForwWT:WaveletTransform, ForwWTDataProps |
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59 | { |
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60 | |||
61 | /// <summary> Returns the horizontal analysis wavelet filters used in each level, for |
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62 | /// the specified tile-component. The first element in the array is the |
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63 | /// filter used to obtain the lowest resolution (resolution level 0) |
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64 | /// subbands (i.e. lowest frequency LL subband), the second element is the |
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65 | /// one used to generate the resolution level 1 subbands, and so on. If |
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66 | /// there are less elements in the array than the number of resolution |
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67 | /// levels, then the last one is assumed to repeat itself. |
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68 | /// |
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69 | /// <p>The returned filters are applicable only to the specified component |
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70 | /// and in the current tile.</p> |
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71 | /// |
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72 | /// <p>The resolution level of a subband is the resolution level to which a |
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73 | /// subband contributes, which is different from its decomposition |
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74 | /// level.</p> |
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75 | /// |
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76 | /// </summary> |
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77 | /// <param name="t">The index of the tile for which to return the filters. |
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78 | /// |
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79 | /// </param> |
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80 | /// <param name="c">The index of the component for which to return the filters. |
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81 | /// |
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82 | /// </param> |
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83 | /// <returns> The horizontal analysis wavelet filters used in each level. |
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84 | /// |
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85 | /// </returns> |
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86 | AnWTFilter[] getHorAnWaveletFilters(int t, int c); |
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87 | |||
88 | /// <summary> Returns the vertical analysis wavelet filters used in each level, for |
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89 | /// the specified tile-component. The first element in the array is the |
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90 | /// filter used to obtain the lowest resolution (resolution level 0) |
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91 | /// subbands (i.e. lowest frequency LL subband), the second element is the |
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92 | /// one used to generate the resolution level 1 subbands, and so on. If |
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93 | /// there are less elements in the array than the number of resolution |
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94 | /// levels, then the last one is assumed to repeat itself. |
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95 | /// |
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96 | /// <p>The returned filters are applicable only to the specified component |
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97 | /// and in the current tile.</p> |
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98 | /// |
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99 | /// <p>The resolution level of a subband is the resolution level to which a |
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100 | /// subband contributes, which is different from its decomposition |
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101 | /// level.</p> |
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102 | /// |
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103 | /// </summary> |
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104 | /// <param name="t">The index of the tile for which to return the filters. |
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105 | /// |
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106 | /// </param> |
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107 | /// <param name="c">The index of the component for which to return the filters. |
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108 | /// |
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109 | /// </param> |
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110 | /// <returns> The vertical analysis wavelet filters used in each level. |
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111 | /// |
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112 | /// </returns> |
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113 | AnWTFilter[] getVertAnWaveletFilters(int t, int c); |
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114 | |||
115 | /// <summary> Returns the number of decomposition levels that are applied to obtain |
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116 | /// the LL band, in the specified tile-component. A value of 0 means that |
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117 | /// no wavelet transform is applied. |
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118 | /// |
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119 | /// </summary> |
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120 | /// <param name="t">The tile index |
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121 | /// |
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122 | /// </param> |
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123 | /// <param name="c">The index of the component. |
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124 | /// |
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125 | /// </param> |
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126 | /// <returns> The number of decompositions applied to obtain the LL subband |
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127 | /// (0 for no wavelet transform). |
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128 | /// |
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129 | /// </returns> |
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130 | int getDecompLevels(int t, int c); |
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131 | |||
132 | /// <summary> Returns the wavelet tree decomposition. Only WT_DECOMP_DYADIC is |
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133 | /// supported by JPEG 2000 part I. |
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134 | /// |
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135 | /// </summary> |
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136 | /// <param name="t">The tile index |
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137 | /// |
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138 | /// </param> |
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139 | /// <param name="c">The index of the component. |
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140 | /// |
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141 | /// </param> |
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142 | /// <returns> The wavelet decomposition. |
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143 | /// |
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144 | /// </returns> |
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145 | int getDecomp(int t, int c); |
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146 | } |
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147 | } |