ladder.c

傅立叶变换和小波变换是图像压缩的重要工具。该代大戏是利用小波变换进行图像压缩。

#include "ladder.h" 

int ladder_start = 1024; 

const srung ladder[] = {
 {   15,   0,     1 },
 {   15,   0,     1 },
 {   16,   1,     2 },
 {   17,   2,     3 },
 {   18,   3,     4 },
 {   19,   4,     5 },
 {   20,   5,     6 },
 {   21,   6,     7 },
 {   22,   7,     8 },
 {   23,   8,     9 },
 {   24,   9,    10 },
 {   25,  10,    11 },
 {   26,  11,    12 },
 {   27,  12,    13 },
 {   28,  13,    14 },
 {   29,  14,    15 },
 {   30,  15,    16 },
 {   31,  16,    17 },
 {   32,  17,    18 },
 {   33,  18,    19 },
 {   34,  19,    20 },
 {   35,  20,    21 },
 {   36,  21,    22 },
 {   37,  22,    23 },
 {   38,  23,    24 },
 {   39,  24,    25 },
 {   40,  25,    26 },
 {   41,  26,    27 },
 {   42,  27,    28 },
 {   43,  28,    29 },
 {   44,  29,    30 },
 {   45,  30,    31 },
 {   46,  31,    32 },
 {   47,  32,    33 },
 {   48,  33,    34 },
 {   49,  34,    35 },
 {   50,  35,    36 },
 {   51,  36,    37 },
 {   52,  37,    38 },
 {   53,  38,    39 },
 {   54,  39,    40 },
 {   55,  40,    41 },
 {   56,  41,    42 },
 {   56,  42,    43 },
 {   57,  43,    44 },
 {   58,  44,    45 },
 {   59,  45,    46 },
 {   60,  46,    47 },
 {   61,  47,    48 },
 {   62,  48,    49 },
 {   63,  49,    50 },
 {   64,  50,    51 },
 {   65,  51,    52 },
 {   66,  52,    53 },
 {   67,  53,    54 },
 {   68,  54,    55 },
 {   69,  55,    56 },
 {   70,  56,    57 },
 {   71,  57,    58 },
 {   72,  58,    59 },
 {   73,  59,    60 },
 {   74,  60,    61 },
 {   75,  61,    62 },
 {   76,  62,    63 },
 {   77,  63,    64 },
 {   78,  64,    65 },
 {   79,  65,    66 },
 {   80,  66,    67 },
 {   81,  67,    68 },
 {   82,  68,    69 },
 {   83,  69,    70 },
 {   84,  70,    71 },
 {   85,  71,    72 },
 {   86,  72,    73 },
 {   87,  73,    74 },
 {   88,  74,    75 },
 {   89,  75,    76 },
 {   90,  76,    77 },
 {   91,  77,    78 },
 {   92,  78,    79 },
 {   93,  79,    80 },
 {   94,  80,    81 },
 {   95,  81,    82 },
 {   96,  82,    83 },
 {   97,  83,    84 },
 {   98,  84,    85 },
 {   99,  85,    86 },
 {  100,  86,    87 },
 {  101,  87,    88 },
 {  102,  88,    89 },
 {  103,  89,    90 },
 {  104,  90,    91 },
 {  105,  91,    92 },
 {  106,  92,    93 },
 {  107,  93,    94 },
 {  108,  94,    95 },
 {  109,  95,    96 },
 {  110,  96,    97 },
 {  111,  97,    98 },
 {  112,  98,    99 },
 {  113,  99,   100 },
 {  114, 100,   101 },
 {  115, 101,   102 },
 {  116, 102,   103 },
 {  117, 103,   104 },
 {  118, 104,   105 },
 {  119, 105,   106 },
 {  120, 106,   107 },
 {  121, 107,   108 },
 {  122, 108,   109 },
 {  123, 108,   110 },
 {  124, 109,   111 },
 {  125, 110,   112 },
 {  126, 111,   113 },
 {  127, 112,   114 },
 {  128, 113,   115 },
 {  128, 114,   116 },
 {  129, 115,   117 },
 {  130, 116,   118 },
 {  131, 117,   119 },
 {  132, 118,   120 },
 {  133, 119,   121 },
 {  134, 120,   122 },
 {  135, 121,   123 },
 {  136, 122,   124 },
 {  137, 123,   125 },
 {  138, 124,   126 },
 {  139, 125,   127 },
 {  140, 126,   128 },
 {  141, 127,   129 },
 {  142, 128,   130 },
 {  143, 129,   131 },
 {  144, 130,   132 },
 {  145, 131,   133 },
 {  146, 132,   134 },
 {  147, 133,   135 },
 {  148, 134,   136 },
 {  149, 135,   137 },
 {  150, 136,   138 },
 {  151, 137,   139 },
 {  152, 138,   140 },
 {  153, 139,   141 },
 {  154, 140,   142 },
 {  155, 141,   143 },
 {  156, 142,   144 },
 {  157, 143,   145 },
 {  158, 144,   146 },
 {  159, 145,   147 },
 {  160, 146,   148 },
 {  161, 147,   149 },
 {  162, 148,   150 },
 {  163, 149,   151 },
 {  164, 150,   152 },
 {  165, 151,   153 },
 {  166, 152,   154 },
 {  167, 153,   155 },
 {  168, 154,   156 },
 {  169, 155,   157 },
 {  170, 156,   158 },
 {  171, 157,   159 },
 {  172, 158,   160 },
 {  173, 159,   161 },
 {  174, 160,   162 },
 {  175, 161,   163 },
 {  176, 162,   164 },
 {  177, 163,   165 },
 {  178, 164,   166 },
 {  179, 165,   167 },
 {  180, 166,   168 },
 {  181, 167,   169 },
 {  182, 168,   170 },
 {  183, 169,   171 },
 {  184, 170,   172 },
 {  185, 171,   173 },
 {  186, 172,   174 },
 {  187, 173,   175 },
 {  188, 174,   176 },
 {  189, 175,   177 },
 {  190, 176,   178 },
 {  191, 177,   179 },
 {  192, 178,   180 },
 {  193, 179,   181 },
 {  194, 179,   182 },
 {  195, 180,   183 },
 {  196, 181,   184 },
 {  197, 182,   185 },
 {  198, 183,   186 },
 {  199, 184,   187 },
 {  200, 185,   188 },
 {  200, 186,   189 },
 {  201, 187,   190 },
 {  202, 188,   191 },
 {  203, 189,   192 },
 {  204, 190,   193 },
 {  205, 191,   194 },
 {  206, 192,   195 },
 {  207, 193,   196 },
 {  208, 194,   197 },
 {  209, 195,   198 },
 {  210, 196,   199 },
 {  211, 197,   200 },
 {  212, 198,   201 },
 {  213, 199,   202 },
 {  214, 200,   203 },
 {  215, 201,   204 },
 {  216, 202,   205 },
 {  217, 203,   206 },
 {  218, 204,   207 },
 {  219, 205,   208 },
 {  220, 206,   209 },
 {  221, 207,   210 },
 {  222, 208,   211 },
 {  223, 209,   212 },
 {  224, 210,   213 },
 {  225, 211,   214 },
 {  226, 212,   215 },
 {  227, 213,   216 },
 {  228, 214,   217 },
 {  229, 215,   218 },
 {  230, 216,   219 },
 {  231, 217,   220 },
 {  232, 218,   221 },
 {  233, 219,   222 },
 {  234, 220,   223 },
 {  235, 221,   224 },
 {  236, 222,   225 },
 {  237, 223,   226 },
 {  238, 224,   227 },
 {  239, 225,   228 },
 {  240, 226,   229 },
 {  241, 227,   230 },
 {  242, 228,   231 },
 {  243, 229,   232 },
 {  244, 230,   233 },
 {  245, 231,   234 },
 {  246, 232,   235 },
 {  247, 233,   236 },
 {  248, 234,   237 },
 {  249, 235,   238 },
 {  250, 236,   239 },
 {  251, 237,   240 },
 {  252, 238,   241 },
 {  253, 239,   242 },
 {  254, 240,   243 },
 {  255, 241,   244 },
 {  256, 242,   245 },
 {  257, 243,   246 },
 {  258, 244,   247 },
 {  259, 245,   248 },
 {  260, 246,   249 },
 {  261, 247,   250 },
 {  262, 248,   251 },
 {  263, 249,   252 },
 {  264, 250,   253 },
 {  265, 251,   254 },
 {  266, 251,   255 },
 {  267, 252,   256 },
 {  268, 253,   257 },
 {  269, 254,   258 },
 {  270, 255,   259 },
 {  271, 256,   260 },
 {  271, 257,   261 },
 {  272, 258,   262 },
 {  273, 259,   263 },
 {  274, 260,   264 },
 {  275, 261,   265 },
 {  276, 262,   266 },
 {  277, 263,   267 },
 {  278, 264,   268 },
 {  279, 265,   269 },
 {  280, 266,   270 },
 {  281, 267,   271 },
 {  282, 268,   272 },
 {  283, 269,   273 },
 {  284, 270,   274 },
 {  285, 271,   275 },
 {  286, 272,   276 },
 {  287, 273,   277 },
 {  288, 274,   278 },
 {  289, 275,   279 },
 {  290, 276,   280 },
 {  291, 277,   281 },
 {  292, 278,   282 },
 {  293, 279,   283 },
 {  294, 280,   284 },
 {  295, 281,   285 },
 {  296, 282,   286 },
 {  297, 283,   287 },
 {  298, 284,   288 },
 {  299, 285,   289 },
 {  300, 286,   290 },
 {  301, 287,   291 },
 {  302, 288,   292 },
 {  303, 289,   293 },
 {  304, 290,   294 },
 {  305, 291,   295 },
 {  306, 292,   296 },
 {  307, 293,   297 },
 {  308, 294,   298 },
 {  309, 295,   299 },
 {  310, 296,   300 },
 {  311, 297,   301 },
 {  312, 298,   302 },
 {  313, 299,   303 },
 {  314, 300,   304 },
 {  315, 301,   305 },
 {  316, 302,   306 },
 {  317, 303,   307 },
 {  318, 304,   308 },
 {  319, 305,   309 },
 {  320, 306,   310 },
 {  321, 307,   311 },
 {  322, 308,   312 },
 {  323, 309,   313 },
 {  324, 310,   314 },
 {  325, 311,   315 },
 {  326, 312,   316 },
 {  327, 313,   317 },
 {  328, 314,   318 },
 {  329, 315,   319 },
 {  330, 316,   320 },
 {  331, 317,   321 },
 {  332, 318,   322 },
 {  333, 319,   323 },
 {  334, 320,   324 },
 {  335, 321,   325 },
 {  336, 322,   326 },
 {  337, 323,   327 },
 {  338, 323,   328 },
 {  339, 324,   329 },
 {  340, 325,   330 },
 {  341, 326,   331 },
 {  342, 327,   332 },
 {  343, 328,   333 },
 {  343, 329,   334 },
 {  344, 330,   335 },
 {  345, 331,   336 },
 {  346, 332,   337 },
 {  347, 333,   338 },
 {  348, 334,   339 },
 {  349, 335,   340 },
 {  350, 336,   341 },
 {  351, 337,   342 },
 {  352, 338,   343 },
 {  353, 339,   344 },
 {  354, 340,   345 },
 {  355, 341,   346 },
 {  356, 342,   347 },
 {  357, 343,   348 },
 {  358, 344,   349 },
 {  359, 345,   350 },
 {  360, 346,   351 },
 {  361, 347,   352 },
 {  362, 348,   353 },
 {  363, 349,   354 },
 {  364, 350,   355 },
 {  365, 351,   356 },
 {  366, 352,   357 },
 {  367, 353,   358 },
 {  368, 354,   359 },
 {  369, 355,   360 },
 {  370, 356,   361 },
 {  371, 357,   362 },
 {  372, 358,   363 },
 {  373, 359,   364 },
 {  374, 360,   365 },
 {  375, 361,   366 },
 {  376, 362,   367 },
 {  377, 363,   368 },
 {  378, 364,   369 },
 {  379, 365,   370 },
 {  380, 366,   371 },
 {  381, 367,   372 },
 {  382, 368,   373 },
 {  383, 369,   374 },
 {  384, 370,   375 },
 {  385, 371,   376 },
 {  386, 372,   377 },
 {  387, 373,   378 },
 {  388, 374,   379 },
 {  389, 375,   380 },
 {  390, 376,   381 },
 {  391, 377,   382 },
 {  392, 378,   383 },
 {  393, 379,   384 },
 {  394, 380,   385 },
 {  395, 381,   386 },
 {  396, 382,   387 },
 {  397, 383,   388 },
 {  398, 384,   389 },
 {  399, 385,   390 },
 {  400, 386,   391 },
 {  401, 387,   392 },
 {  402, 388,   393 },
 {  403, 389,   394 },
 {  404, 390,   395 },
 {  405, 391,   396 },
 {  406, 392,   397 },
 {  407, 393,   398 },
 {  408, 394,   399 },
 {  409, 394,   400 },
 {  410, 395,   401 },
 {  411, 396,   402 },
 {  412, 397,   403 },
 {  413, 398,   404 },
 {  414, 399,   405 },
 {  415, 400,   406 },
 {  415, 401,   407 },
 {  416, 402,   408 },
 {  417, 403,   409 },
 {  418, 404,   410 },
 {  419, 405,   411 },
 {  420, 406,   412 },
 {  421, 407,   413 },
 {  422, 408,   414 },
 {  423, 409,   415 },
 {  424, 410,   416 },
 {  425, 411,   417 },
 {  426, 412,   418 },
 {  427, 413,   419 },
 {  428, 414,   420 },
 {  429, 415,   421 },
 {  430, 416,   422 },
 {  431, 417,   423 },
 {  432, 418,   424 },
 {  433, 419,   425 },
 {  434, 420,   426 },
 {  435, 421,   427 },
 {  436, 422,   428 },
 {  437, 423,   429 },
 {  438, 424,   430 },
 {  439, 425,   431 },
 {  440, 426,   432 },
 {  441, 427,   433 },
 {  442, 428,   434 },
 {  443, 429,   435 },
 {  444, 430,   436 },
 {  445, 431,   437 },
 {  446, 432,   438 },
 {  447, 433,   439 },
 {  448, 434,   440 },
 {  449, 435,   441 },
 {  450, 436,   442 },
 {  451, 437,   443 },
 {  452, 438,   444 },
 {  453, 439,   445 },
 {  454, 440,   446 },
 {  455, 441,   447 },
 {  456, 442,   448 },
 {  457, 443,   449 },
 {  458, 444,   450 },
 {  459, 445,   451 },
 {  460, 446,   452 },
 {  461, 447,   453 },
 {  462, 448,   454 },
 {  463, 449,   455 },
 {  464, 450,   456 },
 {  465, 451,   457 },
 {  466, 452,   458 },
 {  467, 453,   459 },
 {  468, 454,   460 },
 {  469, 455,   461 },
 {  470, 456,   462 },
 {  471, 457,   463 },
 {  472, 458,   464 },
 {  473, 459,   465 },
 {  474, 460,   466 },
 {  475, 461,   467 },
 {  476, 462,   468 },
 {  477, 463,   469 },
 {  478, 464,   470 },
 {  479, 465,   471 },
 {  480, 466,   472 },
 {  481, 466,   473 },
 {  482, 467,   474 },
 {  483, 468,   475 },
 {  484, 469,   476 },
 {  485, 470,   477 },
 {  486, 471,   478 },
 {  486, 472,   479 },
 {  487, 473,   480 },
 {  488, 474,   481 },
 {  489, 475,   482 },
 {  490, 476,   483 },
 {  491, 477,   484 },
 {  492, 478,   485 },
 {  493, 479,   486 },
 {  494, 480,   487 },
 {  495, 481,   488 },
 {  496, 482,   489 },
 {  497, 483,   490 },
 {  498, 484,   491 },
 {  499, 485,   492 },
 {  500, 486,   493 },
 {  501, 487,   494 },
 {  502, 488,   495 },
 {  503, 489,   496 },
 {  504, 490,   497 },
 {  505, 491,   498 },
 {  506, 492,   499 },
 {  507, 493,   500 },
 {  508, 494,   501 },
 {  509, 495,   502 },
 {  510, 496,   503 },
 {  511, 497,   504 },
 {  512, 498,   505 },
 {  513, 499,   506 },
 {  514, 500,   507 },
 {  515, 501,   508 },
 {  516, 502,   509 },
 {  517, 503,   510 },
 {  518, 504,   511 },
 {  519, 505,   512 },
 {  520, 506,   513 },
 {  521, 507,   514 },
 {  522, 508,   515 },
 {  523, 509,   516 },
 {  524, 510,   517 },
 {  525, 511,   518 },
 {  526, 512,   519 },
 {  527, 513,   520 },
 {  528, 514,   521 },
 {  529, 515,   522 },
 {  530, 516,   523 },
 {  531, 517,   524 },
 {  532, 518,   525 },
 {  533, 519,   526 },
 {  534, 520,   527 },
 {  535, 521,   528 },
 {  536, 522,   529 },
 {  537, 523,   530 },
 {  538, 524,   531 },
 {  539, 525,   532 },
 {  540, 526,   533 },
 {  541, 527,   534 },
 {  542, 528,   535 },
 {  543, 529,   536 },
 {  544, 530,   537 },
 {  545, 531,   538 },
 {  546, 532,   539 },
 {  547, 533,   540 },
 {  548, 534,   541 },
 {  549, 535,   542 },
 {  550, 536,   543 },
 {  551, 537,   544 },
 {  552, 538,   545 },
 {  553, 538,   546 },
 {  554, 539,   547 },
 {  555, 540,   548 },
 {  556, 541,   549 },
 {  557, 542,   550 },
 {  558, 543,   551 },
 {  558, 544,   552 },
 {  559, 545,   553 },
 {  560, 546,   554 },
 {  561, 547,   555 },
 {  562, 548,   556 },
 {  563, 549,   557 },
 {  564, 550,   558 },
 {  565, 551,   559 },
 {  566, 552,   560 },
 {  567, 553,   561 },
 {  568, 554,   562 },
 {  569, 555,   563 },
 {  570, 556,   564 },
 {  571, 557,   565 },
 {  572, 558,   566 },
 {  573, 559,   567 },
 {  574, 560,   568 },
 {  575, 561,   569 },
 {  576, 562,   570 },
 {  577, 563,   571 },
 {  578, 564,   572 },
 {  579, 565,   573 },
 {  580, 566,   574 },
 {  581, 567,   575 },
 {  582, 568,   576 },
 {  583, 569,   577 },
 {  584, 570,   578 },
 {  585, 571,   579 },
 {  586, 572,   580 },
 {  587, 573,   581 },
 {  588, 574,   582 },
 {  589, 575,   583 },
 {  590, 576,   584 },
 {  591, 577,   585 },
 {  592, 578,   586 },
 {  593, 579,   587 },
 {  594, 580,   588 },
 {  595, 581,   589 },
 {  596, 582,   590 },
 {  597, 583,   591 },
 {  598, 584,   592 },
 {  599, 585,   593 },
 {  600, 586,   594 },
 {  601, 587,   595 },
 {  602, 588,   596 },
 {  603, 589,   597 },
 {  604, 590,   598 },
 {  605, 591,   599 },
 {  606, 592,   600 },
 {  607, 593,   601 },
 {  608, 594,   602 },
 {  609, 595,   603 },
 {  610, 596,   604 },
 {  611, 597,   605 },
 {  612, 598,   606 },
 {  613, 599,   607 },
 {  614, 600,   608 },
 {  615, 601,   609 },
 {  616, 602,   610 },
 {  617, 603,   611 },
 {  618, 604,   612 },
 {  619, 605,   613 },
 {  620, 606,   614 },
 {  621, 607,   615 },
 {  622, 608,   616 },
 {  623, 609,   617 },
 {  624, 609,   618 },
 {  625, 610,   619 },
 {  626, 611,   620 },
 {  627, 612,   621 },
 {  628, 613,   622 },
 {  629, 614,   623 },
 {  630, 615,   624 },
 {  630, 616,   625 },
 {  631, 617,   626 },
 {  632, 618,   627 },
 {  633, 619,   628 },
 {  634, 620,   629 },
 {  635, 621,   630 },
 {  636, 622,   631 },
 {  637, 623,   632 },
 {  638, 624,   633 },
 {  639, 625,   634 },
 {  640, 626,   635 },
 {  641, 627,   636 },
 {  642, 628,   637 },
 {  643, 629,   638 },
 {  644, 630,   639 },
 {  645, 631,   640 },