cv.jit.blobs.sort is your friend.

On Nov 6, 2007, at 7:52 PM, Erik Mijwaard wrote:

> > Dear list, > > I'd like to track the largest blob (in a room using a camera). > Therefore I am exploring the cv.jit objects and I think cv.jit.label > is the one I am looking for. > > The problem I run into is that using it with charmode 1 and mode 1 I > expected to see only the largest blob labelled 1. But instead I get > the most top/left one. The example below is a stripped down version > of the help-file and two moving circles, one bigger than the other. > > I searched the list and read the help-files but it still don't get > it, what am I missing here? > > Any help is much appreciated. > Best regards, Erik > > running cv.jit_1.5_jit_1.6_OSX-Intel on a MBP with latest Max+Jitter > > > the patch: > > #P window setfont "Sans Serif" 9.; > #P window linecount 2; > #P user com 271 214 215 196617 46; > #K set 0 22376 31008 25711 25971 8297 29728 26990 8291 26721 29293 > 28516 25888 12588 8301 28516 25888 12576 29544 28535 8308 26725 8294 > 26994 29556 8308 28528 12140 25958 29728 25196 28514 8297 28275 > 29797 24932 8303 26144 29800 25888 27745 29287 25971 29728 25196 > 28514 16128; > #K end; > #P user panel 1205 -49 148 4; > #X brgb 182 192 184; > #X frgb 198 198 198; > #X border 0; > #X rounded 0; > #X shadow 0; > #X done; > #P user panel 1205 -57 148 4; > #X brgb 182 192 184; > #X frgb 198 198 198; > #X border 0; > #X rounded 0; > #X shadow 0; > #X done; > #P user panel 1205 -65 148 4; > #X brgb 182 192 184; > #X frgb 198 198 198; > #X border 0; > #X rounded 0; > #X shadow 0; > #X done; > #P window linecount 1; > #N vpatcher 389 129 836 437; > #P window setfont "Sans Serif" 9.; > #P message 275 229 57 196617 brgb 0 0 0; > #P newex 275 205 48 196617 loadbang; > #P newex 89 79 56 196617 t b b clear; > #N vpatcher 54 74 654 474; > #P window setfont "Sans Serif" 9.; > #P newex 50 50 30 196617 t b b; > #P newex 50 193 161 196617 pack paintoval 0 0 20 20 0 255 0; > #P newex 161 159 31 196617 + 20; > #P newex 148 125 67 196617 slide 15. 15.; > #P newex 148 96 71 196617 drunk 220 10; > #P newex 83 159 31 196617 + 20; > #P newex 70 125 67 196617 slide 15. 15.; > #P newex 70 96 71 196617 drunk 300 10; > #P inlet 50 30 15 0; > #P outlet 50 215 15 0; > #P connect 1 0 9 0; > #P connect 9 0 8 0; > #P connect 8 0 0 0; > #P connect 9 1 2 0; > #P connect 2 0 3 0; > #P connect 3 0 8 1; > #P connect 3 0 4 0; > #P connect 6 0 8 2; > #P connect 4 0 8 3; > #P connect 7 0 8 4; > #P connect 9 1 5 0; > #P connect 5 0 6 0; > #P connect 6 0 7 0; > #P pop; > #P newobj 112 155 43 196617 p green; > #N vpatcher 54 74 654 474; > #P window setfont "Sans Serif" 9.; > #P newex 50 50 30 196617 t b b; > #P newex 50 193 161 196617 pack paintoval 0 0 20 20 255 0 0; > #P newex 161 159 31 196617 + 50; > #P newex 148 125 67 196617 slide 15. 15.; > #P newex 148 96 71 196617 drunk 220 10; > #P newex 83 159 31 196617 + 50; > #P newex 70 125 67 196617 slide 15. 15.; > #P newex 70 96 71 196617 drunk 300 10; > #P inlet 50 30 15 0; > #P outlet 50 215 15 0; > #P connect 1 0 9 0; > #P connect 9 0 8 0; > #P connect 8 0 0 0; > #P connect 9 1 2 0; > #P connect 2 0 3 0; > #P connect 3 0 8 1; > #P connect 3 0 4 0; > #P connect 6 0 8 2; > #P connect 4 0 8 3; > #P connect 7 0 8 4; > #P connect 9 1 5 0; > #P connect 5 0 6 0; > #P connect 6 0 7 0; > #P pop; > #P newobj 63 154 33 196617 p red; > #P inlet 89 52 15 0; > #P outlet 112 245 15 0; > #P connect 4 1 2 0; > #P connect 1 0 4 0; > #P connect 4 1 3 0; > #P connect 6 0 0 0; > #P fasten 4 2 0 0 215 163; > #P fasten 4 0 0 0 28 159; > #P connect 3 0 0 0; > #P connect 2 0 0 0; > #P connect 5 0 6 0; > #P pop; > #P newobj 69 16 56 196617 p rgb flies; > #P toggle 69 -36 15 0; > #P newex 69 -15 50 196617 qmetro 5; > #P newex 69 41 111 196617 jit.lcd 4 char 320 240; > #P window linecount 2; > #P comment 527 46 110 196617 Institute of Advanced Media Arts & > Sciences; > #B frgb 15 2 2; > #P window linecount 1; > #P comment 527 31 110 196617 support:; > #B frgb 15 2 2; > #P window linecount 3; > #P user com 525 -25 118 196617 30; > #K set 0 25209 8266 25953 28205 19809 29283 8272 25964 27749 29801 > 25970 3434 28016 16489 24941 24947 11873 25390 27248 3395 28528 > 31090 26983 26740 8361 12848 12339 11570 12336 13824; > #K end; > #P user panel 518 -32 136 110; > #X brgb 198 198 198; > #X frgb 140 140 140; > #X border 1; > #X rounded 0; > #X shadow 0; > #X done; > #P number 598 332 35 9 1 255 3 3 0 0 0 221 221 221 222 222 222 0 0 0; > #P user jit.fpsgui 290 427 60 196617 0; > #P window linecount 2; > #P comment 613 356 124 196617 > #B frgb 15 2 2; > #P window linecount 1; > #P comment 311 387 144 196617 Charmode 1 , Mode 1:; > #B frgb 247 247 247; > #P comment 311 402 144 196617 Blob chosen by size rank; > #B frgb 247 247 247; > #P user jit.pwindow 289 261 162 122 0 1 0 0 1 0; > #P user panel 278 255 183 165; > #X brgb 140 140 140; > #X frgb 0 0 0; > #X border 0; > #X rounded 0; > #X shadow 0; > #X done; > #P newex 505 353 103 196617 jit.op @op == @val 1; > #P newex 514 308 164 196617 cv.jit.label @charmode 1 @mode 1; > #P window linecount 11; > #P user com 526 152 242 196617 193; > #K set 0 22376 25966 8291 26721 29293 28516 25888 26995 8308 30066 > 28261 25632 28526 11296 28533 29808 30068 8301 24948 29289 30752 > 29817 28773 8297 29472 25448 24946 11789 3401 28192 8813 28516 25888 > 12322 11296 28526 27769 8308 26725 8294 26994 29556 8242 13621 8290 > 27759 25203 11296 25455 30062 29801 28263 8294 29295 27936 29800 > 25888 29807 28704 27749 26228 8291 28530 28261 29299 8289 29285 8306 > 25972 30066 28261 25646 3341 8813 28516 25888 12578 8311 28530 27507 > 8292 26982 26213 29285 28276 27769 8308 26721 28192 26223 29216 8300 > 28526 26400 28533 29808 30068 11808 17004 28514; > #K set 100 29472 24946 25888 27745 25189 27749 25632 24931 25455 > 29284 26990 26400 29807 8308 26725 26994 8307 27002 25888 29281 > 28267 11808 21608 25888 27745 29287 25971 29728 25196 28514 8297 > 28192 29800 25888 26989 24935 25888 30569 27756 8290 25888 27745 > 25189 27749 25632 30569 29800 8308 26725 8310 24940 30053 8241 11296 > 29800 25888 29541 25455 28260 8300 24946 26469 29556 8311 26996 > 26656 12844 8289 28260 8307 28448 28526 11808 20334 27769 8308 26725 > 8300 24946 26469 29556 8242 13621 8290 27759 25203 8289 29285 8306 > 25972 30066 28261 25646; > #K end; > #P user panel 499 143 279 245; > #X brgb 198 198 198; > #X frgb 140 140 140; > #X border 1; > #X rounded 0; > #X shadow 0; > #X done; > #P window linecount 1; > #P comment 163 236 65 196617 Binary image; > #B frgb 247 247 247; > #P user jit.pwindow 67 251 162 122 0 1 0 0 1 0; > #P comment 561 439 163 196617 Single-plane long or char matrix.; > #P window linecount 2; > #P comment 559 404 163 196617 Single-plane char matrix. All non-zero > pixels are assumed to be ON.; > #P window linecount 3; > #P comment 247 86 105 196617 Change thresholding value to obtain a > binary image; > #P number 205 92 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0; > #P window linecount 1; > #P newex 68 117 103 196617 jit.op @op > @val 10; > #P newex 68 90 64 196617 jit.rgb2luma; > #P comment 512 439 41 196617 Output:; > #B frgb 247 247 247; > #P comment 512 404 34 196617 Input:; > #B frgb 247 247 247; > #P user panel 508 433 51 28; > #X brgb 140 140 140; > #X frgb 198 198 198; > #X border 1; > #X rounded 0; > #X shadow 0; > #X done; > #P user panel 508 397 51 37; > #X brgb 140 140 140; > #X frgb 198 198 198; > #X border 1; > #X rounded 0; > #X shadow 0; > #X done; > #P user panel 508 397 218 36; > #X brgb 198 198 198; > #X frgb 140 140 140; > #X border 1; > #X rounded 0; > #X shadow 0; > #X done; > #P user panel 508 432 218 29; > #X brgb 198 198 198; > #X frgb 140 140 140; > #X border 1; > #X rounded 0; > #X shadow 0; > #X done; > #P hidden newex 620 494 104 196617 bgcolor 210 210 195; > #P window setfont "Sans Serif" 24.; > #P comment 18 -88 646 196632 cv.jit.label: Connected Components; > #B frgb 129 71 36; > #P user panel 201 79 157 49; > #X brgb 198 198 198; > #X frgb 140 140 140; > #X border 1; > #X rounded 0; > #X shadow 0; > #X done; > #P user panel 56 230 184 152; > #X brgb 140 140 140; > #X frgb 0 0 0; > #X border 0; > #X rounded 0; > #X shadow 0; > #X done; > #P user panel 260 206 237 40; > #X brgb 248 82 0; > #X frgb 140 140 140; > #X border 1; > #X rounded 0; > #X shadow 0; > #X done; > #P fasten 22 0 24 0 510 247 295 247; > #P fasten 21 0 22 0 519 339 510 339; > #P connect 34 0 11 0; > #P connect 37 0 34 0; > #P connect 35 0 37 0; > #P connect 36 0 35 0; > #P connect 29 0 22 1; > #P connect 24 0 28 0; > #P connect 11 0 12 0; > #P fasten 13 0 12 1 210 112 166 112; > #P fasten 12 0 21 0 73 170 519 170; > #P connect 12 0 17 0; > #P window clipboard copycount 42; > >

thank you, i will take closer look at that one.