Research Article
A Novel Psychovisual Threshold on Large DCT for Image Compression
Table 1
The index of quantization value on each frequency order.
| 0 | 1 | 5 | 6 | 14 | 15 | 27 | 28 | 44 | 45 | 65 | 66 | 90 | 91 | 119 | 120 | 152 | 153 | 189 | 190 | 230 | 231 | 275 | 2 | 4 | 7 | 13 | 16 | 26 | 29 | 43 | 46 | 64 | 67 | 89 | 92 | 118 | 121 | 151 | 154 | 188 | 191 | 229 | 232 | 274 | 276 | 3 | 8 | 12 | 17 | 25 | 30 | 42 | 47 | 63 | 68 | 88 | 93 | 117 | 122 | 150 | 155 | 187 | 192 | 228 | 233 | 273 | 277 | 318 | 9 | 11 | 18 | 24 | 31 | 41 | 48 | 62 | 69 | 87 | 94 | 116 | 123 | 149 | 156 | 186 | 193 | 227 | 234 | 272 | 278 | 317 | 319 | 10 | 19 | 23 | 32 | 40 | 49 | 61 | 70 | 86 | 95 | 115 | 124 | 148 | 157 | 185 | 194 | 226 | 235 | 271 | 279 | 316 | 320 | 357 | 20 | 22 | 33 | 39 | 50 | 60 | 71 | 85 | 96 | 114 | 125 | 147 | 158 | 184 | 195 | 225 | 236 | 270 | 280 | 315 | 321 | 356 | 358 | 21 | 34 | 38 | 51 | 59 | 72 | 84 | 97 | 113 | 126 | 146 | 159 | 183 | 196 | 224 | 237 | 269 | 281 | 314 | 322 | 355 | 359 | 392 | 35 | 37 | 52 | 58 | 73 | 83 | 98 | 112 | 127 | 145 | 160 | 182 | 197 | 223 | 238 | 268 | 282 | 313 | 323 | 354 | 360 | 391 | 393 | 36 | 53 | 57 | 74 | 82 | 99 | 111 | 128 | 144 | 161 | 181 | 198 | 222 | 239 | 267 | 283 | 312 | 324 | 353 | 361 | 390 | 394 | 423 | 54 | 56 | 75 | 81 | 100 | 110 | 129 | 143 | 162 | 180 | 199 | 221 | 240 | 266 | 284 | 311 | 325 | 352 | 362 | 389 | 395 | 422 | 424 | 55 | 76 | 80 | 101 | 109 | 130 | 142 | 163 | 179 | 200 | 220 | 241 | 265 | 285 | 310 | 326 | 351 | 363 | 388 | 396 | 421 | 425 | 450 | 77 | 79 | 102 | 108 | 131 | 141 | 164 | 178 | 201 | 219 | 242 | 264 | 286 | 309 | 327 | 350 | 364 | 387 | 397 | 420 | 426 | 449 | 451 | 78 | 103 | 107 | 132 | 140 | 165 | 177 | 202 | 218 | 243 | 263 | 287 | 308 | 328 | 349 | 365 | 386 | 398 | 419 | 427 | 448 | 452 | 473 | 104 | 106 | 133 | 139 | 166 | 176 | 203 | 217 | 244 | 262 | 288 | 307 | 329 | 348 | 366 | 385 | 399 | 418 | 428 | 447 | 453 | 472 | 474 | 105 | 134 | 138 | 167 | 175 | 204 | 216 | 245 | 261 | 289 | 306 | 330 | 347 | 367 | 384 | 400 | 417 | 429 | 446 | 454 | 471 | 475 | 492 | 135 | 137 | 168 | 174 | 205 | 215 | 246 | 260 | 290 | 305 | 331 | 346 | 368 | 383 | 401 | 416 | 430 | 445 | 455 | 470 | 476 | 491 | 493 | 136 | 169 | 173 | 206 | 214 | 247 | 259 | 291 | 304 | 332 | 345 | 369 | 382 | 402 | 415 | 431 | 444 | 456 | 469 | 477 | 490 | 494 | 507 | 170 | 172 | 207 | 213 | 248 | 258 | 292 | 303 | 333 | 344 | 370 | 381 | 403 | 414 | 432 | 443 | 457 | 468 | 478 | 489 | 495 | 506 | 508 | 171 | 208 | 212 | 249 | 257 | 293 | 302 | 334 | 343 | 371 | 380 | 404 | 413 | 433 | 442 | 458 | 467 | 479 | 488 | 496 | 505 | 509 | 209 | 211 | 250 | 256 | 294 | 301 | 335 | 342 | 372 | 379 | 405 | 412 | 434 | 441 | 459 | 466 | 480 | 487 | 497 | 504 | 510 | 210 | 251 | 255 | 295 | 300 | 336 | 341 | 373 | 378 | 406 | 411 | 435 | 440 | 460 | 465 | 481 | 486 | 498 | 503 | | 252 | 254 | 296 | 299 | 337 | 340 | 374 | 377 | 407 | 410 | 436 | 439 | 461 | 464 | 482 | 485 | 499 | 502 | | 253 | 297 | 298 | 338 | 339 | 375 | 376 | 408 | 409 | 437 | 438 | 462 | 463 | 483 | 484 | 500 | 501 | |
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