command output for `matcher corners`

corners

[ { x: 37, y: 261 },
  { x: 482, y: 402 },
  { x: 84, y: 331 },
  { x: 38, y: 293 },
  { x: 39, y: 246 },
  { x: 36, y: 251 },
  { x: 604, y: 382 },
  { x: 78, y: 457 },
  { x: 572, y: 264 },
  { x: 337, y: 367 },
  { x: 28, y: 377 },
  { x: 317, y: 322 },
  { x: 67, y: 358 },
  { x: 464, y: 284 },
  { x: 53, y: 455 },
  { x: 23, y: 239 },
  { x: 123, y: 279 },
  { x: 589, y: 284 },
  { x: 100, y: 431 },
  { x: 405, y: 192 },
  { x: 67, y: 344 },
  { x: 597, y: 211 },
  { x: 344, y: 354 },
  { x: 267, y: 181 },
  { x: 619, y: 279 },
  { x: 546, y: 300 },
  { x: 180, y: 432 },
  { x: 50, y: 429 },
  { x: 588, y: 272 },
  { x: 89, y: 434 },
  { x: 50, y: 295 },
  { x: 325, y: 458 },
  { x: 497, y: 354 },
  { x: 561, y: 362 },
  { x: 24, y: 246 },
  { x: 622, y: 380 },
  { x: 385, y: 427 },
  { x: 191, y: 200 },
  { x: 191, y: 444 },
  { x: 44, y: 298 },
  { x: 432, y: 176 },
  { x: 537, y: 356 },
  { x: 42, y: 447 },
  { x: 321, y: 456 },
  { x: 35, y: 193 },
  { x: 465, y: 383 },
  { x: 53, y: 287 },
  { x: 122, y: 400 },
  { x: 599, y: 280 },
  { x: 313, y: 352 },
  { x: 220, y: 400 },
  { x: 227, y: 453 },
  { x: 191, y: 256 },
  { x: 232, y: 447 },
  { x: 430, y: 136 },
  { x: 545, y: 245 },
  { x: 164, y: 335 },
  { x: 458, y: 383 },
  { x: 65, y: 309 },
  { x: 71, y: 440 },
  { x: 180, y: 226 },
  { x: 403, y: 281 },
  { x: 52, y: 386 },
  { x: 195, y: 253 },
  { x: 237, y: 381 },
  { x: 606, y: 253 },
  { x: 171, y: 215 },
  { x: 321, y: 451 },
  { x: 56, y: 450 },
  { x: 614, y: 324 },
  { x: 178, y: 414 },
  { x: 187, y: 253 },
  { x: 393, y: 206 },
  { x: 20, y: 391 },
  { x: 116, y: 405 },
  { x: 30, y: 255 },
  { x: 230, y: 421 },
  { x: 255, y: 433 },
  { x: 427, y: 172 },
  { x: 546, y: 295 },
  { x: 35, y: 150 },
  { x: 412, y: 144 },
  { x: 544, y: 346 },
  { x: 257, y: 201 },
  { x: 282, y: 300 },
  { x: 482, y: 156 },
  { x: 398, y: 205 },
  { x: 417, y: 379 },
  { x: 550, y: 350 },
  { x: 124, y: 398 },
  { x: 234, y: 207 },
  { x: 189, y: 328 },
  { x: 421, y: 185 },
  { x: 249, y: 429 },
  { x: 198, y: 248 },
  { x: 85, y: 439 },
  { x: 18, y: 297 },
  { x: 310, y: 422 },
  { x: 441, y: 173 },
  { x: 200, y: 257 },
  ... 400 more items ]