annotate Meerwald-dir/wavelet.h @ 24:9f20bce6184e v0.7

move directories, support netpbm 11
author Peter Meerwald-Stadler <pmeerw@pmeerw.net>
date Fri, 20 Dec 2024 13:08:59 +0100
parents Meerwald/wavelet.h@f83ef905a63d
children
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1 #ifndef WAVELET_H
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2
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3 #include <stdio.h>
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4
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5 extern char dbgstr[1000];
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6
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7 /* this are internal functions - don't use 'em! */
8
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8 void out_dbg_str(const char *str);
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9 void start_trace(void);
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10 void stop_trace(void);
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11 void flush_trace_file(void);
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12
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13 /* public functions / macros */
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14 #define StartTrace
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15 #define StopTrace
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16
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17 #define Trace(str)
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18 #define TraceVar(str,var)
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19
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20 #define Entering
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21 #define Leaving
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22 #define LeavingErr
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23 #define FlushTrace
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24
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25 #define Warning(str)
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26
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27 #define PreCondition(exp,str)
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28 #define PostCondition(exp,str)
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29
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30 /* Note that if an error is added, an errormessage for this specific
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31 error must also be added. Otherwise no appropriate message can
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32 be displayed in an error window. ( Then "Unknown error ocurred"
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33 will be displayed.)
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34 The errormessage must be added to the case-construct in the
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35 procedure err_GetErrorMessage
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36 */
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37
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38 typedef enum
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39 {
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40 Error_NoError, /* No Error has happened. */
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41 Error_NotImplemented, /* A needed part has not (yet) been
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42 implemented */
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43 Error_AssertionFailed, /* An assertion, pre- or postcondition failed.
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44 Occurs only in buggy programs. */
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45 Error_NotEnoughMemory, /* We can't allocate the memory we need. */
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46
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47 Error_Limitation, /* Some limitation exceeded, e.g. a string
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48 variable is too short */
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49
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50
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51 Error_CantOpenFile, /* The file cannot be opened */
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52 Error_CantCreateFile,
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53 Error_CantWriteIntoFile,
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54 Error_CantCloseFile,
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55 Error_WrongFileFormat,
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56
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57 Error_WidthOrHeightZero,
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58 Error_CompressedZeroContent,
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59 Error_OriginalZeroContent,
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60
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61 Error_InternalError
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62
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63 }Error;
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64
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65
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66 /************************************************************************/
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67 /* Functionname: err_simple_message */
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68 /* -------------------------------------------------------------------- */
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69 /* Parameter: */
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70 /* char *: string that contains information about an */
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71 /* error the user should know. */
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72 /* -------------------------------------------------------------------- */
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73 /* Description: */
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74 /* Prints error messages for the user. */
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75 /************************************************************************/
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76 void err_SimpleMessage(char *message);
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77
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78 /************************************************************************/
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79 /* Functionname: err_get_message */
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80 /* -------------------------------------------------------------------- */
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81 /* Return value: Errormessage for this specific error. */
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82 /* Parameter: */
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83 /* Error err: Error whose errormessage should be returned */
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84 /* -------------------------------------------------------------------- */
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85 /* Description: */
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86 /************************************************************************/
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87 char * err_GetErrorMessage(Error err);
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88
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89 #include <stddef.h>
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90
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91 typedef double Pixel;
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92
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93 typedef struct Image_struct {
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94 Pixel *data;
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95 int width,height;
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96
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97 /* redundant, for our fun only :-) */
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98 Pixel min_val,max_val; /* range of pixel-values in data */
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99 /* [min_val..max_val] */
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100 int size; /* = width * height */
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101 int bpp; /* bits per pixel of original image */
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102 } *Image;
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103
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104 typedef unsigned int IntPixel;
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105
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106 typedef struct IntImage_struct {
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107 IntPixel *data;
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108 int width, height;
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109
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110 /* redundant, for our fun only :-) */
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111 IntPixel min_val,max_val; /* range of values in data */
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112 /* [min_val..max_val] */
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113 int size; /* = width * height */
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114 int bpp; /* bits per pixel of original image */
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115 } *IntImage;
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116
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117 typedef struct Image_tree_struct {
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118 double entropy;
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119 struct Image_tree_struct *coarse,*horizontal,*vertical,*diagonal,*doubletree;
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120 Image image;
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121 int level;
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122 int flag;
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123
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124 void *codec_data;
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125 IntImage significance_map;
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126 } *Image_tree;
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127
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128 typedef struct Image_info_struct {
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129 Pixel min,max,mean,var,rms;
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130 } *Image_info;
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131
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132 enum zigzag_direction {zigzag_up,zigzag_down,zigzag_right,zigzag_left};
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133
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134 typedef struct Zigzag_data_struct {
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135 int x,y,w,h;
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136 enum zigzag_direction dir;
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137 } *Zigzag_data;
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138
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139 #define get_intpixel(image,x,y) ( ((image)==NULL || \
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140 (x)<0 || (x)>=(image)->width || (y)<0 || (y)>=(image)->height) \
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141 ? (IntPixel) 0 : (image)->data[(x)+(y)*(image)->width])
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142
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143 #define set_intpixel(image,x,y,val) if (!((image)==NULL || \
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144 (x)<0 || (x)>=(image)->width || (y)<0 || (y)>=(image)->height)) \
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145 (image)->data[(x)+(y)*(image)->width]=(IntPixel) (val)
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146
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147 #define get_pixel(image,x,y) ( ((image)==NULL || \
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148 (x)<0 || (x)>=(image)->width || (y)<0 || (y)>=(image)->height) \
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149 ? (Pixel) 0 : (image)->data[(x)+(y)*(image)->width])
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150
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151 #define set_pixel(image,x,y,val) if (!((image)==NULL || \
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152 (x)<0 || (x)>=(image)->width || (y)<0 || (y)>=(image)->height)) \
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153 (image)->data[(x)+(y)*(image)->width]=(Pixel) (val)
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154
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155 #define get_pixel_adr(image,x,y) ( ((image)==NULL || \
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156 (x)<0 || (x)>=(image)->width || (y)<0 || (y)>=(image)->height) \
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157 ? (Pixel*) NULL : (image)->data+((x)+(y)*(image)->width))
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158
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159 /* functions: */
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160
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161 IntImage new_intimage(int width, int height);
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162 IntImage load_intimage(char *file, int max_val);
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163 void free_intimage(IntImage img);
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164
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165 void clear_intimage(IntImage img);
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166 void copy_into_intimage(IntImage img1,IntImage img2,int x,int y);
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167 void copy_part_of_intimage(IntImage img1,IntImage img2,int x,int y);
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168
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169 Image new_image(int width, int height);
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170 void free_image(Image img);
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171 void clear_image(Image img);
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172 void copy_into_image(Image img1,Image img2,int x,int y);
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173 void scale_image(Image img,int maximum);
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174 void copy_part_of_image(Image img1,Image img2,int x,int y);
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175
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176 void copy_part_of_image_into_image(
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177 Image dest_img, int dest_x, int dest_y,
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178 Image src_img, int src_x, int src_y,
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179 int width, int height);
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180
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181
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182 int string_to_pixel(char *str, Pixel *p);
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183
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184 Image load_image(char *file, int max_val);
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185 int save_image_P5(char *file, Image img);
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186
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187 Image intimage_to_image(IntImage i);
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188 IntImage image_to_intimage(Image i);
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189
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190 Image_tree new_image_tree();
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191 void free_image_tree(Image_tree t);
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192
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193 Image get_difference_image(Image image1, Image image2);
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194
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195 void get_image_infos(Image image, Image_info info);
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196
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197 void get_intimage_infos(IntImage image, IntPixel *min, IntPixel *max, Pixel *avg, Pixel *var);
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198
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199 void init_zigzag(Zigzag_data zz, int width, int height);
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200 void next_zigzag(Zigzag_data zz);
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201 Image get_absolute_image_scaled(Image img);
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202
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203 /* common macros */
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204
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205 #ifndef MIN
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206 #define MIN(a,b) ((a)<(b)?(a):(b))
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207 #endif
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208
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209 #ifndef MAX
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210 #define MAX(a,b) ((a)>(b)?(a):(b))
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211 #endif
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212
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213 enum FilterType { FTNoSymm, FTSymm, FTAntiSymm};
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214
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215 typedef struct FilterStruct {
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216 enum FilterType type;
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217 int hipass;
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218 Pixel * data;
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219 int start,end;
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220
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221 int len;
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222 } *Filter;
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223
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224 Filter new_filter(int size);
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225
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226 int filter_cutoff(Image in, int in_start, int in_len, int in_step,
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227 Image out, int out_start, int out_len, int out_step,
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228 Filter f);
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229
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230 int filter_inv_cutoff(Image in, int in_start, int in_len, int in_step,
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231 Image out, int out_start, int out_len, int out_step,
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232 Filter f);
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233
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234 int filter_periodical(Image in, int in_start, int in_len, int in_step,
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235 Image out, int out_start, int out_len, int out_step,
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236 Filter f);
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237
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238 int filter_inv_periodical(Image in, int in_start, int in_len, int in_step,
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239 Image out, int out_start, int out_len, int out_step,
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240 Filter f);
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241
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242 int filter_mirror(Image in, int in_start, int in_len, int in_step,
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243 Image out, int out_start, int out_len, int out_step,
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244 Filter f);
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245
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246 int filter_inv_mirror(Image in, int in_start, int in_len, int in_step,
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247 Image out, int out_start, int out_len, int out_step,
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248 Filter f);
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249
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250 Pixel get_filter_center(Filter f);
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251
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252 enum FilterGHType { FTOrtho, FTBiOrtho, FTOther};
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253
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254 typedef struct FilterGHStruct {
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255 enum FilterGHType type;
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256 Filter g, h, gi, hi;
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257 char *name;
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258 } *FilterGH;
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259
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260 typedef struct AllFilterStruct {
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261 FilterGH *filter;
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262 int count;
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263 } *AllFilters;
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264
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265
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266 AllFilters load_filters(char *name);
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267
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268 typedef struct SegmentsStruct {
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269 int width,height; /* segment width & height*/
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270 int *data;
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271 } *Segments;
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272
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273 enum FilterMethod{cutoff,inv_cutoff,periodical,inv_periodical,mirror,inv_mirror};
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274
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275 enum Information_Cost{threshold,log_energy,entropy,norml,norml2,gauss_markov,
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276 shanon,weak_l,weak_lq,compression_number,compression_numberq,
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277 compression_area,compression_areaq,sdiscrepancy,discrepancy,concentration};
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278
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279 Image_tree wavelettransform(Image original,int level,FilterGH *flt,enum FilterMethod method);
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280 Image_tree wavelettransform_wp(Image original,int level,FilterGH *flt,enum FilterMethod method);
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281
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282 Image_tree best_basis(Image original,int level,FilterGH *flt,
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283 enum FilterMethod method,enum Information_Cost cost,double epsilon);
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284
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285 Image_tree best_level(Image original,int maxlevel,int *bestlevel,FilterGH *flt,enum FilterMethod method,
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286 enum Information_Cost cost,double epsilon);
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287
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288 Image build_image(Image_tree quadtree,int width,int height);
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289
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290 Image inv_transform(Image_tree quadtree,FilterGH *flt,
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291 enum FilterMethod method);
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292
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293 Image inv_transform_wp(Image_tree quadtree,FilterGH *flt,
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294 enum FilterMethod method);
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295
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296 int rec_double(Image_tree dtree,int level,FilterGH *flt,enum FilterMethod method,enum Information_Cost cost,double epsilon);
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297
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298 Image_tree decompose_to_level(Image original,int level,FilterGH *flt,enum FilterMethod method);
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299
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300 int decompose_all(Image_tree tree,int maxlevel,FilterGH *flt,enum FilterMethod method,
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301 enum Information_Cost cost,double epsilon);
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302
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303 int find_deepest_level(int width,int height);
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304
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305
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306 #define WAVELET_H
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307 #endif

Repositories maintained by Peter Meerwald, pmeerw@pmeerw.net.