/usr/share/nip2/compat/7.12/Filter.def is in nip2 7.26.3-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 | Filter_conv_item = class
Menupullright "_Convolution" "various spatial convolution filters" {
/* Some useful masks.
*/
filter_blur = Matrix_con 9 0 [[1, 1, 1], [1, 1, 1], [1, 1, 1]];
filter_sharp = Matrix_con 8 0 [[-1, -1, -1], [-1, 16, -1], [-1, -1, -1]];
filter_emboss = Matrix_con 1 128 [[-1, 0], [0, 1]];
filter_laplacian = Matrix_con 1 128
[[-1, -1, -1], [-1, 8, -1], [-1, -1, -1]];
filter_sobel = Matrix_con 1 128 [[1, 2, 1], [0, 0, 0], [-1, -2, -1]];
filter_lindet = Matrix_con 1 0 [[1, 1, 1], [-2, -2, -2], [1, 1, 1]];
Blur_item = class
Menuaction "_Blur" "3x3 blur of image" {
action x = map_unary (conv filter_blur) x;
}
Sharpen_item = class
Menuaction "_Sharpen" "3x3 sharpen of image" {
action x = map_unary (conv filter_sharp) x;
}
Emboss_item = class
Menuaction "_Emboss" "1 pixel displace emboss" {
action x = map_unary (conv filter_emboss) x;
}
Laplacian_item = class
Menuaction "_Laplacian" "3x3 laplacian edge detect" {
action x = map_unary (conv filter_laplacian) x;
}
Sobel_item = class
Menuaction "So_bel" "3x3 Sobel edge detect" {
action x
= map_unary sobel x
{
sobel im
= abs (a - 128) + abs (b - 128)
{
a = conv filter_sobel im;
b = conv (rot270 filter_sobel) im;
}
}
}
/* 3x3 line detect of image
diagonals should be scaled down by root(2) I guess
Kirk
*/
Linedet_item = class
Menuaction "Li_ne Detect" "3x3 line detect" {
action x
= map_unary lindet x
{
lindet im
= foldr1 max_pair images
{
masks = take 4 (iterate rot45 filter_lindet);
images = map (converse conv im) masks;
}
}
}
Usharp_item = class
Menuaction "_Unsharp Mask" "cored sharpen of L only in LAB image" {
action x = class
_result {
_vislevel = 3;
size = Option "Radius" [
"3 pixels",
"5 pixels",
"7 pixels",
"9 pixels",
"11 pixels",
"51 pixels"
] 0;
st = Scale "Smoothness threshold" 0 5 1.5;
bm = Scale "Brighten by at most" 1 50 10;
dm = Scale "Darken by at most" 1 50 50;
fs = Scale "Sharpen flat areas by" (-2) 5 1;
js = Scale "Sharpen jaggy areas by" (-2) 5 2;
_result
= map_unary process x
{
process in
= Image in'''
{
in' = colour_transform_to Image_type.LABS in.value;
in'' = sharpen [3, 5, 7, 9, 11, 51]?size st bm dm fs js in';
in''' = colour_transform_to (get_type in) in'';
}
}
}
}
sep1 = Menuseparator;
Custom_blur_item = class
Menuaction "Custom B_lur / Sharpen"
"blur or sharpen with tuneable parameters" {
action x = class
_result {
_vislevel = 3;
type = Option "Type" ["Blur", "Sharpen"] 0;
r = Scale "Radius" 1 100 1;
fac = Scale "Amount" 0 1 1;
shape = Option "Mask shape" [
"Square",
"Gaussian"
] 0;
prec = Option "Precision" ["Int", "Float"] 0;
_result
= map_unary process x
{
process in
= clip2fmt blur.format proc
{
mask
= matrix_blur r.value, shape.value == 0
= matrix_gaussian_blur r.value;
blur = [convsep, convsepf]?prec mask in;
proc
= in + fac * (in - blur), type == 1
= blur * fac + in * (1 - fac);
}
}
}
}
Custom_conv_item = class
Menuaction "Custom C_onvolution"
"convolution filter with tuneable parameters" {
action x = class
_result {
_vislevel = 3;
matrix = Matrix_con 1 0 [[0, 0, 0], [0, 1, 0], [0, 0, 0]];
separable
= Toggle "Seperable convolution" false,
matrix.width == 1 || matrix.height == 1
= false;
type = Option "Convolution type" ["Int", "Float"] 0;
_result
= map_unary process x
{
process in
= in.Image in'
{
conv_fn
= im_conv, !separable && type == 0
= im_convsep, separable && type == 0
= im_convf, !separable && type == 1
= im_convsepf, separable && type == 1
= error "boink!";
in' = conv_fn in.value matrix;
}
}
}
}
}
Filter_rank_item = class
Menupullright "_Rank" "various rank filters" {
Median_item = class
Menuaction "_Median" "3x3 median rank filter" {
action x = map_unary (rank 3 3 5) x;
}
Image_rank_item = class
Menuaction "_Image Rank" "pixelwise rank a list or group of images" {
action x = class
_result {
_vislevel = 3;
select
= Expression "Rank" ((int) (guess_size / 2))
{
guess_size
= len x, is_list x
= len x.value, is_Group x
= 0;
}
// can't really iterate over groups ... since we allow a group
// argument
_result = rank_image select x;
}
}
Custom_rank_item = class
Menuaction "Custom _Rank" "rank filter with tuneable parameters" {
action x = class
_result {
_vislevel = 3;
window_width = Expression "Window width" 3;
window_height = Expression "Window height" 3;
select = Expression "Rank"
((int) ((to_real window_width * to_real window_height + 1) / 2));
_result
= map_unary process x
{
process in
= rank window_width window_height select in;
}
}
}
}
Filter_morphology_item = class
Menupullright "_Morphology" "various morphological filters" {
/* Some useful masks.
*/
mask8 = Matrix_mor [[255, 255, 255], [255, 255, 255], [255, 255, 255]];
mask4 = Matrix_mor [[128, 255, 128], [255, 255, 255], [128, 255, 128]];
mask1 = Matrix_mor [[0, 0, 0], [0, 255, 0], [0, 0, 0]];
thin = Matrix_mor [[0, 0, 0], [128, 255, 128], [255, 255, 255]];
Threshold_item = Select_item.Threshold_item;
sep1 = Menuseparator;
Dilate_item = class
Menupullright "_Dilate" "morphological dilate" {
Dilate8_item = class
Menuaction "_8-connected" "dilate with an 8-connected mask" {
action x = map_unary (dilate mask8) x;
}
Dilate4_item = class
Menuaction "_4-connected" "dilate with a 4-connected mask" {
action x = map_unary (dilate mask4) x;
}
}
Erode_item = class
Menupullright "_Erode" "morphological erode" {
Erode8_item = class
Menuaction "_8-connected" "erode with an 8-connected mask" {
action x = map_unary (erode mask8) x;
}
Erode4_item = class
Menuaction "_4-connected" "erode with a 4-connected mask" {
action x = map_unary (erode mask4) x;
}
}
Custom_morph_item = class
Menuaction "Custom _Morphology"
"convolution morphological operator" {
action x = class
_result {
_vislevel = 3;
mask = mask4;
type = Option "Operation" ["Erode", "Dilate"] 1;
apply = Expression "Number of times to apply mask" 1;
_result
= map_unary morph x
{
morph image
= Image value'
{
fatmask = (iterate (dilate mask) mask)?(to_real apply - 1);
value'
= im_erode image.value fatmask, type.value == 0
= im_dilate image.value fatmask;
}
}
}
}
sep2 = Menuseparator;
Open_item = class
Menuaction "_Open" "open with an 8-connected mask" {
action x = map_unary (dilate mask8 @ erode mask8) x;
}
Close_item = class
Menuaction "_Close" "close with an 8-connected mask" {
action x = map_unary (erode mask8 @ dilate mask8) x;
}
Clean_item = class
Menuaction "C_lean" "remove 8-connected isolated points" {
action x
= map_unary clean x
{
clean x = x ^ erode mask1 x;
}
}
Thin_item = class
Menuaction "_Thin" "thin once" {
action x
= map_unary thinall x
{
masks = take 8 (iterate rot45 thin);
thin1 m x = x ^ erode m x;
thinall x = foldr thin1 x masks;
}
}
}
Filter_fourier_item = class
Menupullright "_Fourier" "various Fourier filters" {
preview_size = 64;
sense_option = Option "Sense" [
"Pass",
"Reject"
] 0;
// make a visualisation image
make_vis fn = (Image @ image_set_type Image_type.FOURIER @ rotquad @ fn)
(im_create_fmask preview_size preview_size);
// make the process function
process fn in
= (Image @ fn) (im_flt_image_freq in.value);
New_ideal_item = class
Menupullright "_Ideal" "various ideal Fourier filters" {
High_low_item = class
Menuaction "_High or Low Pass"
"highpass/lowpass ideal Fourier filter" {
action x = class
_result {
_vislevel = 3;
sense = sense_option;
fc = Scale "Frequency cutoff" 0.01 0.99 0.5;
// call a freq func with our parameters
_params f = f sense.value fc.value 0 0 0 0;
visualize_mask = make_vis _params;
_result = map_unary (process _params) x;
}
}
Ring_item = class
Menuaction "_Ring Pass or Ring Reject"
"ring pass/reject ideal Fourier filter" {
action x = class
_result {
_vislevel = 3;
sense = sense_option;
fc = Scale "Frequency cutoff" 0.01 0.99 0.5;
rw = Scale "Ring width" 0.01 0.99 0.5;
// call a freq func with our parameters
_params f = f (sense.value + 6) fc.value
rw.value 0 0 0;
visualize_mask = make_vis _params;
_result = map_unary (process _params) x;
}
}
Band_item = class
Menuaction "_Band Pass or Band Reject"
"band pass/reject ideal Fourier filter" {
action x = class
_result {
_vislevel = 3;
sense = sense_option;
fcx = Scale "Horizontal frequency cutoff" 0.01 0.99 0.5;
fcy = Scale "Vertical frequency cutoff" 0.01 0.99 0.5;
r = Scale "Radius" 0.01 0.99 0.5;
// call a freq func with our parameters
_params f = f (sense.value + 12) fcx.value fcy.value
r.value 0 0;
visualize_mask = make_vis _params;
_result = map_unary (process _params) x;
}
}
}
New_gaussian_item = class
Menupullright "_Gaussian" "various Gaussian Fourier filters" {
High_low_item = class
Menuaction "_High or Low Pass"
"highpass/lowpass Gaussian Fourier filter" {
action x = class
_result {
_vislevel = 3;
sense = sense_option;
fc = Scale "Frequency cutoff" 0.01 0.99 0.5;
ac = Scale "Amplitude cutoff" 0.01 0.99 0.5;
// call a freq func with our parameters
_params f = f (sense.value + 4) fc.value
ac.value 0 0 0;
visualize_mask = make_vis _params;
_result = map_unary (process _params) x;
}
}
Ring_item = class
Menuaction "_Ring Pass or Ring Reject"
"ring pass/reject Gaussian Fourier filter" {
action x = class
_result {
_vislevel = 3;
sense = sense_option;
fc = Scale "Frequency cutoff" 0.01 0.99 0.5;
ac = Scale "Amplitude cutoff" 0.01 0.99 0.5;
rw = Scale "Ring width" 0.01 0.99 0.5;
// call a freq func with our parameters
_params f = f (sense.value + 10) fc.value
rw.value ac.value 0 0;
visualize_mask = make_vis _params;
_result = map_unary (process _params) x;
}
}
Band_item = class
Menuaction "_Band Pass or Band Reject"
"band pass/reject Gaussian Fourier filter" {
action x = class
_result {
_vislevel = 3;
sense = sense_option;
fcx = Scale "Horizontal frequency cutoff" 0.01 0.99 0.5;
fcy = Scale "Vertical frequency cutoff" 0.01 0.99 0.5;
r = Scale "Radius" 0.01 0.99 0.5;
ac = Scale "Amplitude cutoff" 0.01 0.99 0.5;
// call a freq func with our parameters
_params f = f (sense.value + 16) fcx.value fcy.value
r.value ac.value 0;
visualize_mask = make_vis _params;
_result = map_unary (process _params) x;
}
}
}
New_butterworth_item = class
Menupullright "_Butterworth"
"various Butterworth Fourier filters" {
High_low_item = class
Menuaction "_High or Low Pass"
"highpass/lowpass Butterworth Fourier filter" {
action x = class
_result {
_vislevel = 3;
sense = sense_option;
fc = Scale "Frequency cutoff" 0.01 0.99 0.5;
ac = Scale "Amplitude cutoff" 0.01 0.99 0.5;
o = Scale "Order" 1 10 2;
// call a freq func with our parameters
_params f = f (sense.value + 2) o.value fc.value ac.value
0 0;
visualize_mask = make_vis _params;
_result = map_unary (process _params) x;
}
}
Ring_item = class
Menuaction "_Ring Pass or Ring Reject"
"ring pass/reject Butterworth Fourier filter" {
action x = class
_result {
_vislevel = 3;
sense = sense_option;
fc = Scale "Frequency cutoff" 0.01 0.99 0.5;
ac = Scale "Amplitude cutoff" 0.01 0.99 0.5;
rw = Scale "Ring width" 0.01 0.99 0.5;
o = Scale "Order" 1 10 2;
// call a freq func with our parameters
_params f = f (sense.value + 8) o.value fc.value rw.value
ac.value 0;
visualize_mask = make_vis _params;
_result = map_unary (process _params) x;
}
}
Band_item = class
Menuaction "_Band Pass or Band Reject"
"band pass/reject Butterworth Fourier filter" {
action x = class
_result {
_vislevel = 3;
sense = sense_option;
fcx = Scale "Horizontal frequency cutoff" 0.01 0.99 0.5;
fcy = Scale "Vertical frequency cutoff" 0.01 0.99 0.5;
r = Scale "Radius" 0.01 0.99 0.5;
ac = Scale "Amplitude cutoff" 0.01 0.99 0.5;
o = Scale "Order" 1 10 2;
// call a freq func with our parameters
_params f = f (sense.value + 14) o.value fcx.value fcy.value
r.value ac.value;
visualize_mask = make_vis _params;
_result = map_unary (process _params) x;
}
}
}
}
Filter_enhance_item = class
Menupullright "_Enhance" "various enhancement filters" {
Falsecolour_item = class
Menuaction "_False Colour" "false colour a mono image" {
action x = class
_result {
_vislevel = 3;
o = Scale "Offset" (-255) 255 0;
clip = Toggle "Clip colour range" false;
_result
= map_unary process x
{
process im
= falsecolour mono''
{
mono = colour_transform_to Image_type.B_W im;
mono' = mono + o;
mono''
= (unsigned char) mono', clip
= (unsigned char) (mono' & 0xff);
}
}
}
}
Statistical_diff_item = class
Menuaction "_Statistical Difference"
"statistical difference of an image" {
action x = class
_result {
_vislevel = 3;
wsize = Expression "Window size" 11;
tmean = Expression "Target mean" 128;
mean_weight = Scale "Mean weight" 0 1 0.8;
tdev = Expression "Target deviation" 50;
dev_weight = Scale "Deviation weight" 0 1 0.8;
border = Toggle "Output image matches input image in size" true;
_result
= map_unary process x
{
process in
= Image in''
{
in' = colour_transform_to Image_type.B_W in.value;
fn
= im_stdif, border
= im_stdif_raw;
in'' = fn in'
mean_weight.value tmean.expr
dev_weight.value tdev.expr
wsize.expr wsize.expr;
}
}
}
}
Hist_equal_item = class
Menupullright "_Equalise Histogram" "equalise contrast" {
Global_item = class
Menuaction "_Global" "equalise contrast globally" {
action x = map_unary hist_equalize x;
}
Local_item = class
Menuaction "_Local" "equalise contrast within a roving window" {
action x = class
_result {
_vislevel = 3;
window_width = Expression "Window width" 20;
window_height = Expression "Window height" 20;
_result
= map_unary process x
{
process in
= hist_equalize_local
window_width.expr window_height.expr in;
}
}
}
}
}
Filter_correlate_item = class
Menupullright "Spatial _Correlation" "calculate correlation surfaces" {
Correlate_item = class
Menuaction "_Correlate" "calculate correlation coefficient" {
action a b
= map_binary corr a b
{
corr a b
= correlate a b,
a.width <= b.width && a.height <= b.height
= correlate b a;
}
}
Correlate_fast_item = class
Menuaction "_Simple Difference"
"calculate sum of squares of differences" {
action a b
= map_binary corr a b
{
corr a b
= correlate_fast a b,
a.width <= b.width && a.height <= b.height
= correlate_fast b a;
}
}
}
#separator
Filter_tilt_item = class
Menupullright "Ti_lt Brightness" "tilt brightness" {
Left_right_item = class
Menuaction "_Left to Right" "linear left-right brighten" {
action x = class
_result {
_vislevel = 3;
tilt = Scale "Left-right tilt" (-1) 1 0;
_result
= map_unary tilt_lr x
{
tilt_lr image
= image * scale
{
ramp = im_fgrey image.width image.height;
scale = (ramp - 0.5) * tilt + 1;
}
}
}
}
Top_bottom_item = class
Menuaction "_Top to Bottom" "linear top-bottom brighten" {
action x = class
_result {
_vislevel = 3;
tilt = Scale "Top-bottom tilt" (-1) 1 0;
_result
= map_unary tilt_tb x
{
tilt_tb image
= image * scale
{
ramp = rot90
(im_fgrey image.height image.width);
scale = (ramp - 0.5) * tilt + 1;
}
}
}
}
sep1 = Menuseparator;
Left_right_cos_item = class
Menuaction "Cosine Left-_right" "cosine left-right brighten" {
action x = class
_result {
_vislevel = 3;
tilt = Scale "Left-right tilt" (-1) 1 0;
shift = Scale "Shift by" (-1) 1 0;
_result
= map_unary tilt_lr x
{
tilt_lr image
= image * scale
{
ramp = im_fgrey image.width image.height - 0.5 -
shift.value;
scale = 0.5 * tilt.value * cos (ramp * 180) + 1;
}
}
}
}
Top_bottom_cos_item = class
Menuaction "Cosine Top-_bottom" "cosine top-bottom brighten" {
action x = class
_result {
_vislevel = 3;
tilt = Scale "Top-bottom tilt" (-1) 1 0;
shift = Scale "Shift by" (-1) 1 0;
_result
= map_unary tilt_tb x
{
tilt_tb image
= image * scale
{
ramp = rot90 (im_fgrey image.height image.width) - 0.5 -
shift.value;
scale = 0.5 * tilt.value * cos (ramp * 180) + 1;
}
}
}
}
sep2 = Menuseparator;
Circular_item = class
Menuaction "_Circular" "circular brighten" {
action x = class
_result {
_vislevel = 3;
tilt = Scale "Tilt" (-1) 1 0;
hshift = Scale "Horizontal shift by" (-1) 1 0;
vshift = Scale "Vertical shift by" (-1) 1 0;
_result
= map_unary tilt_tb x
{
tilt_tb image
= image * scale
{
hramp = im_fgrey image.width image.height - 0.5 -
hshift.value;
vramp = rot90 (im_fgrey image.height image.width) - 0.5 -
vshift.value;
ramp = (hramp ** 2 + vramp ** 2) ** 0.5;
scale = 0.5 * tilt.value * cos (ramp * 180) + 1;
}
}
}
}
}
Filter_blend_item = class
Menupullright "_Blend" "blend objects together" {
Scale_blend_item = class
Menuaction "_Scale Blend" "blend two objects together with a scale" {
action a b = class
_result {
_vislevel = 3;
p = Scale "Blend position" 0 1 0.5;
_result
= map_binary process a b
{
process im1 im2 = im1 * (1 - p.value) + im2 * p.value;
}
}
}
Image_blend_item = class
Menuaction "_Image Blend" "use an image to blend two objects" {
action a b c
= map_trinary process a b c
{
process a b c
= blend condition in1 in2
{
compare a b
// prefer image as the condition
= false,
!has_image a && has_image b
// prefer mono images as the condition
= false,
has_bands a && has_bands b &&
get_bands a > 1 && get_bands b == 1
// prefer uchar as the condition
= false,
has_format a && has_format b &&
get_format a > Image_format.UCHAR &&
get_format b == Image_format.UCHAR
= true;
args' = sortc compare [a, b, c];
condition = args'?0;
in1 = args'?1;
in2 = args'?2;
}
}
}
Line_blend_item = class
Menuaction "_Along Line"
"blend between image a and image b along a line" {
action a b = class
_result {
_vislevel = 3;
orientation = Option "Orientation" [
"Left to Right",
"Top to Bottom"
] 0;
blend_position = Scale "Blend position" 0 1 0.5;
blend_width = Scale "Blend width" 0 1 0.05;
_result
= map_binary process a b
{
process a b
= blend (Image condition) b a
{
output_width = max_pair a.width b.width;
output_height = max_pair a.height b.height;
range
= output_width, orientation == 0
= output_height;
blend_position'
= floor (range * blend_position.value);
blend_width'
= 1, blend_width.value == 0
= floor (range * blend_width.value);
start = blend_position' - blend_width' / 2;
background = (make_xy output_width output_height) >=
blend_position';
ramp
= im_grey blend_width' output_height, orientation == 0
= rot90 (im_grey blend_width' output_width);
condition
= insert_noexpand start 0 ramp background?0,
orientation == 0
= insert_noexpand 0 start ramp background?1;
}
}
}
}
Blend_alpha_item = class
Menuaction "_Alpha Blend" "blend images with optional alpha channels" {
// usage: layerit foreground background
// input images must be either 1 or 3 bands, optionally + 1 band
// which is used as the alpha channel
// rich lott
scale_mask im opacity
= (unsigned char) (to_real opacity / 255 * im);
// to mono
intensity = colour_transform_to Image_type.B_W;
// All the blend functions
// I am grateful to this page
// http://www.pegtop.net/delphi/blendmodes/
// for most of the formulae.
blend_normal mask opacity fg bg
= blend (scale_mask mask opacity) fg bg;
blend_iflighter mask opacity fg bg
= blend (if fg' > bg' then mask' else 0) fg bg
{
fg' = intensity fg;
bg' = intensity bg;
mask' = scale_mask mask opacity ;
}
blend_ifdarker mask opacity fg bg
= blend (if fg' < bg' then mask' else 0) fg bg
{
fg' = intensity fg ;
bg' = intensity bg ;
mask' = scale_mask mask opacity ;
}
blend_multiply mask opacity fg bg
= blend (scale_mask mask opacity) fg' bg
{
fg' = fg / 255 * bg;
}
blend_add mask opacity fg bg
= blend mask fg' bg
{
fg' = opacity / 255 * fg + bg;
}
blend_subtract mask opacity fg bg
= blend mask fg' bg
{
fg' = bg - opacity / 255 * fg;
}
blend_screen mask opacity fg bg
= blend mask fg' bg
{
fg' = 255 - (255 - bg) * (255 - (opacity / 255 * fg)) / 255;
}
blend_burn mask opacity fg bg
= blend mask fg'' bg
{
// fades to white which has no effect.
fg' = (255 - opacity) + opacity * fg / 255;
fg'' = 255 - 255 * (255 - bg) / fg';
}
blend_softlight mask opacity fg bg
= blend mask' fg' bg
{
mask' = scale_mask mask opacity;
fg' = (2 * bg * fg + bg * bg * (1 - 2 * fg / 255)) / 255;
}
blend_hardlight mask opacity fg bg
= blend mask' fg' bg
{
mask' = scale_mask mask opacity;
fg'
= 2 / 255 * fg * bg, bg < 129
= 255 - 2 * (255 - bg) * (255 - fg) / 255;
}
blend_lighten mask opacity fg bg
= blend mask' fg' bg
{
mask' = scale_mask mask opacity;
fg' = if bg < fg then fg else bg;
}
blend_darken mask opacity fg bg
= blend mask' fg' bg
{
mask' = scale_mask mask opacity;
fg' = if bg > fg then fg else bg;
}
blend_dodge mask opacity fg bg
= blend mask fg'' bg
{
// one added to avoid divide by zero
fg' = 1 + 255 - (opacity / 255 * fg);
fg'' = bg * 255 / fg';
}
blend_reflect mask opacity fg bg
= blend mask' fg' bg
{
mask' = scale_mask mask opacity;
fg' = bg * bg / (255 - fg);
}
blend_freeze mask opacity fg bg
= blend mask' fg' bg
{
mask' = scale_mask mask opacity;
fg' = 255 - (255 - bg) * (255 - bg) / (1 + fg);
}
blend_or mask opacity fg bg
= bg | (unsigned char) fg'
{
mask' = scale_mask mask opacity;
fg' = fg * mask' / 255;
}
blend_and mask opacity fg bg
= bg & (unsigned char) fg'
{
mask' = scale_mask mask opacity;
fg' = fg * mask' / 255;
}
// blend types
NORMAL = 0;
IFLIGHTER = 1;
IFDARKER = 2;
MULTIPLY = 3;
ADD = 4;
SUBTRACT = 5;
SCREEN = 6;
BURN = 7;
DODGE = 8;
HARDLIGHT = 9;
SOFTLIGHT = 10;
LIGHTEN = 11;
DARKEN = 12;
REFLECT = 13;
FREEZE = 14;
OR = 15;
AND = 16;
// names we show the user for blend types
names = Enum [
["Normal", NORMAL],
["If Lighter", IFLIGHTER],
["If Darker", IFDARKER],
["Multiply", MULTIPLY],
["Add", ADD],
["Subtract", SUBTRACT],
["Screen", SCREEN],
["Burn", BURN],
["Soft Light", SOFTLIGHT],
["Hard Light", HARDLIGHT],
["Lighten", LIGHTEN],
["Darken", DARKEN],
["Dodge", DODGE],
["Reflect", REFLECT],
["Freeze", FREEZE],
["Bitwise OR", OR],
["Bitwise AND", AND]
];
// functions we call for each blend type
actions = Table [
[NORMAL, blend_normal],
[IFLIGHTER, blend_iflighter],
[IFDARKER, blend_ifdarker],
[MULTIPLY, blend_multiply],
[ADD, blend_add],
[SUBTRACT, blend_subtract],
[SCREEN, blend_screen],
[BURN, blend_burn],
[SOFTLIGHT, blend_softlight],
[HARDLIGHT, blend_hardlight],
[LIGHTEN, blend_lighten],
[DARKEN, blend_darken],
[DODGE, blend_dodge],
[REFLECT, blend_reflect],
[FREEZE, blend_freeze],
[OR, blend_or],
[AND, blend_and]
];
// make sure im has an alpha channel (set opaque if it hasn't)
put_alpha im
= im, im.bands == 4 || im.bands == 2
= im ++ 255;
// make sure im has no alpha channel
lose_alpha im
= extract_bands 0 3 im, im.bands == 4
= im?0, im.bands == 2
= im;
// does im have al alpha channel?
has_alpha im = im.bands == 2 || im.bands == 4;
// get the alpha (set opaque if no alpha)
get_alpha img
= img'?3, img.bands == 4
= img'?1
{
img' = put_alpha img;
}
// add an alpha ... cast the alpha image to match the main image
append_alpha im alpha
= im ++ clip2fmt im.format alpha;
// makes fg the same size as bg, displaced with u, v pixel offset
moveit fg bg u v
= insert_noexpand u v fg bg'
{
bg' = image_new bg.width bg.height
fg.bands fg.format fg.coding fg.type 0 0 0;
}
action bg fg = class
_value {
_vislevel = 3;
method = Option_enum names "Blend mode" "Normal";
opacity = Scale "Opacity" 0 255 255;
hmove = Scale "Horizontal move by" (-bg.width) (bg.width) 0;
vmove = Scale "Vertical move by" (-bg.height) (bg.height) 0;
_value
= append_alpha blended merged_alpha, has_alpha bg
= blended
{
// displace and resize fg (need to displace alpha too)
fg' = moveit (put_alpha fg) bg hmove vmove;
// transform to sRGB
fg'' = colour_transform_to Image_type.sRGB (lose_alpha fg');
bg' = colour_transform_to Image_type.sRGB (lose_alpha bg);
// alphas merged
merged_alpha = get_alpha bg | get_alpha fg';
// blend together
blended = (actions.lookup 0 1 method.value_thing)
(get_alpha fg') opacity.value fg'' bg';
}
}
}
}
Filter_overlay_header_item = class
Menuaction "_Overlay"
"make a colour overlay of two monochrome images" {
action a b = class
_result {
_vislevel = 3;
colour = Option "Colour overlay as" [
"Green over Red",
"Blue over Red",
"Red over Green",
"Red over Blue",
"Blue over Green",
"Green over Blue"
] 0;
_result
= map_binary overlay a b
{
overlay a b
= image_set_type Image_type.sRGB
[(a' ++ b' ++ 0),
(a' ++ 0 ++ b'),
(b' ++ a' ++ 0),
(b' ++ 0 ++ a'),
(0 ++ a' ++ b'),
(0 ++ b' ++ a')]?colour
{
a' = colour_transform_to Image_type.B_W a;
b' = colour_transform_to Image_type.B_W b;
}
}
}
}
Filter_colourize_item = class
Menuaction "_Colourize" "use a colour image or patch to tint a mono image" {
action a b = class
_result {
_vislevel = 3;
tint = Scale "Tint" 0 1 0.6;
_result
= map_binary tintit a b
{
tintit a b
= colour_transform_to (get_type colour) colourized'
{
// get the mono thing first
args = sortc (const (is_colour_type @ get_type)) [a, b];
mono = args?0;
colour = args?1;
colour' = tint * colour_transform_to Image_type.LAB colour;
mono' = colour_transform_to Image_type.B_W mono;
colourized = (mono' / 2.55) ++ colour'?1 ++ colour'?2;
colourized' = image_set_type Image_type.LAB colourized;
}
}
}
}
Filter_browse_multiband_item = class
Menupullright "Bro_wse" "browse though an image, bitwise or bandwise" {
Bandwise_item = class
Menuaction "B_andwise" "browse through the bands of a multiband image" {
action image = class
_result {
_vislevel = 3;
band = Scale "Band" 0 (image.bands - 1) 0;
display = Option "Display as" [
"Grey",
"Green over Red",
"Blue over Red",
"Red over Green",
"Red over Blue",
"Blue over Green",
"Green over Blue"
] 0;
_result
= output
{
down = (int) band.value;
up = down + 1;
remainder = band.value - down;
fade x a
= Vector [0], x == 0
= a * x;
a = fade remainder image?up;
b = fade (1 - remainder) image?down;
output = [
a + b,
a ++ b ++ 0,
a ++ 0 ++ b,
b ++ a ++ 0,
b ++ 0 ++ a,
0 ++ a ++ b,
0 ++ b ++ a
] ? display;
}
}
}
Bitwise_item = class
Menuaction "Bi_twise" "browse through the bits of an image" {
action x = class
_result {
_vislevel = 3;
bit
= Islider "Bit" 0 (nbits - 1) (nbits - 1)
{
nbits
= x.bits, is_Image x
= 8;
Islider c f t v = class
scope.Scale c f t ((int) v) {
Scale = Islider;
}
}
_result
= map_unary process x
{
process im = (im & (0x1 << bit.value)) != 0;
}
}
}
}
#separator
Filter_negative_item = class
Menuaction "Photographic _Negative" "swap black and white" {
action x
= map_unary invert x
{
invert in
= clip2fmt in.format (colour_transform_to (get_type in) rgb')
{
rgb = colour_transform_to Image_type.sRGB in;
rgb' = 255 - rgb;
}
}
}
Filter_solarize_item = class
Menuaction "_Solarise" "invert colours above a threshold" {
action x = class
_result {
_vislevel = 3;
kink = Scale "Kink" 0 1 0.5;
_result
= map_unary process x
{
process image
= hist_map tab'''' image
{
// max pixel value for this format
mx = Image_format.maxval image.format;
// make a LUT ... just 8 and 16 bit
tab
= im_identity_ushort image.bands mx,
image.format ==
Image_format.USHORT
= im_identity image.bands;
tab' = Image tab;
// make basic ^ shape
tab''
= tab' * (1 / kink), tab' < mx * kink
= (mx - tab') / (1 - kink);
tab''' = clip2fmt image.format tab'';
// smooth a bit
mask = matrix_blur (tab'''.width / 8);
tab'''' = convsep mask tab''';
}
}
}
}
Filter_diffuse_glow_item = class
Menuaction "_Diffuse Glow" "add a halo to highlights" {
action x = class
_result {
_vislevel = 3;
r = Scale "Radius" 0 50 5;
highlights = Scale "Highlights" 0 100 95;
glow = Scale "Glow" 0 1 0.5;
colour = Colour_new_item.Widget_colour_item.action;
_result
= map_unary process x
{
process image
= image'
{
mono = (unsigned char) (colour_transform_to
Image_type.B_W image);
thresh = hist_thresh (highlights.value / 100) mono;
mask = mono > thresh;
blur = convsep (matrix_gaussian_blur r.value) mask;
colour' = colour_transform_to image.type colour;
image' = image + colour' * glow * (blur / 255);
}
}
}
}
Filter_drop_shadow_item = class
Menuaction "Drop S_hadow" "add a drop shadow to an image" {
action x = class
_result {
_vislevel = 3;
sx = Scale "Horizontal shadow" (-50) 50 5;
sy = Scale "Vertical shadow" (-50) 50 5;
ss = Scale "Shadow softness" 0 20 5;
bg_colour = Expression "Background colour" 255;
sd_colour = Expression "Shadow colour" 128;
alpha = Toggle "Shadow in alpha channel" false;
transparent = Toggle "Zero pixels are transparent" false;
_result
= map_unary shadow x
{
shadow image
= Image final
{
blur_size = ss.value * 2 + 1;
// matrix we blur with to soften shadows
blur_matrix = matrix_gaussian_blur blur_size;
matrix_size = blur_matrix.width;
matrix_radius = (int) (matrix_size / 2) + 1;
// position and size of shadow image in input cods
// before and after fuzzing
shadow_rect = Rect sx.value sy.value
image.width image.height;
fuzzy_shadow_rect = shadow_rect.margin_adjust matrix_radius;
// size and pos of final image, in input cods
final_rect = image.rect.union fuzzy_shadow_rect;
// hard part of shadow in output cods
shadow_rect' = Rect
(shadow_rect.left - final_rect.left)
(shadow_rect.top - final_rect.top)
shadow_rect.width shadow_rect.height;
// make the shadow mask ... true for parts which cast
// a shadow
mask
= (foldr1 bitwise_and @ bandsplit) (image.value != 0),
transparent
= image_new image.width image.height 1 Image_format.UCHAR
Image_coding.NOCODING Image_type.B_W 255 0 0;
mask' = embed 0 shadow_rect'.left shadow_rect'.top
final_rect.width final_rect.height mask;
mask'' = convsep blur_matrix mask';
// use mask to fade between bg and shadow colour
mk_background colour = image_new
final_rect.width final_rect.height
image.bands image.format image.coding image.type
colour 0 0;
bg_image = mk_background bg_colour.expr;
shadow_image = mk_background sd_colour.expr;
bg = blend mask'' shadow_image bg_image;
// make a full size mask
fg_mask = embed 0
(image.rect.left - final_rect.left)
(image.rect.top - final_rect.top)
final_rect.width final_rect.height mask;
// wrap up the input image ... put the shadow colour
// around it, so if we are outputting a separate
// alpha the shadow colour will be set correctly
fg = insert (image.rect.left - final_rect.left)
(image.rect.top - final_rect.top)
image.value shadow_image;
final
// make a separate alpha
= fg ++ mask'', alpha
// paste image over shadow
= if fg_mask then fg else bg;
}
}
}
}
Filter_paint_text_item = class
Menuaction "_Paint Text" "paint text into an image" {
action x
= paint_position, is_Group x
= paint_area
{
paint_area = class
_result {
_check_args = [
[x, "x", check_Image]
];
_vislevel = 3;
text = String "Text to paint" "<i>Hello</i> world!";
font = Fontname "Use font" Workspaces.Preferences.PAINTBOX_FONT;
align = Option "Alignment" ["Left", "Centre", "Right"] 0;
dpi = Expression "DPI" 300;
colour = Expression "Text colour" 255;
place = Region x (x.width / 4) (x.height / 4)
(x.width / 2) (x.height / 2);
_result
= insert_noexpand place.left place.top (blend txt' fg place) x
{
fg = image_new place.width place.height x.bands x.format
x.coding x.type colour.expr 0 0;
txt = Image (im_text text.value font.value
place.width align.value (to_real dpi));
bg = im_black place.width place.height 1;
txt' = insert_noexpand 0 0 txt bg;
}
}
paint_position = class
_result {
_vislevel = 3;
text = Pattern_images_item.Text_item.action;
colour = Expression "Text colour" 255;
position = Option "Position" [
"North-west",
"North",
"North-east",
"West",
"Centre",
"East",
"South-west",
"South",
"South-east",
"Specify in pixels"
] 4;
left = Expression "Pixels from left" 0;
top = Expression "Pixels from top" 0;
_result
= map_unary paint x
{
paint image
= insert_noexpand x' y' place' image
{
xr = image.width - text.width;
yr = image.height - text.height;
x
= left.expr, position == 9
= [0, xr / 2, xr]?(position % 3);
y
= top.expr, position == 9
= [0, yr / 2, yr]?(position / 3);
x' = range 0 x (image.width - 1);
y' = range 0 y (image.height - 1);
w' = range 1 text.width (image.width - x');
h' = range 1 text.height (image.height - y');
place = extract_area x' y' w' h' image;
text' = insert_noexpand 0 0 text (im_black w' h' 1);
fg = image_new w' h' image.bands image.format
image.coding image.type colour.expr 0 0;
place' = blend text' fg place;
}
}
}
}
}
Filter_draw_line_item = class
Menuaction "Draw _Line" "draw a line using an arrow as a guide" {
}
|