these tricky dots!!!

did you check the cv.jit lib? there are many useful things one is an
object specialised on faces cv.jit.faces you can load a face model as
an xml description. Quite amazing actually.

falk
Am 19.02.2007 um 17:13 schrieb Miguel:

> Hi all,
>
> I need to do some face tracking, I've tried several different
> approaches and so far the best results are obtained from the built-
> in software of a Logitech webcam. the webcam's calibration window
> assigns red dots to the main features of human faces as shown in
> the image:[img]index.php?t=getfile&id=478&private=0[/img]
>
> I am using jit.desktop to grab a region of the screen into max, I
> filter the matrix to get a binary image with only the tracking
> dots. I need now to do 2 things, 1.- to filter out the bounding box
> and to get coordinates of each dot.
>
> I've tried with jit.findbounds but couldnt figure out how to track
> several instances of the same color, I've tried with some
> javascript conditionals but doesnt seem to run fast enough.
>
> any suggestions.
>
> example patch:
>
> max v2;
> #N vpatcher 0 0 950 522;
> #P origin 1 -62;
> #P window setfont "Sans Serif" 9.;
> #P message 822 210 28 9109513 clear;
> #N vpatcher 15 55 615 455;
> #P origin 17 118;
> #P outlet 366 735 15 0;
> #P outlet 240 735 15 0;
> #P outlet 114 735 15 0;
> #P outlet -12 735 15 0;
> #P inlet -12 -94 15 0;
> #P user jit.cellblock -12 -75 861 637 139 9 160 120 19 16 0 1 1 0 0
> 0 1 1 1 0 0 0 255 255 255 0 0 0 0 0 0 191 191 191 0 0 0 215 215 240
> 1 1 1 0 4 0 0 0;
> #P connect 1 0 0 0;
> #P connect 0 0 2 0;
> #P connect 0 1 3 0;
> #P connect 0 2 4 0;
> #P connect 0 3 5 0;
> #P pop;
> #P newobj 545 287 52 9109513 p cellblock;
> #P message 703 117 95 9109513 setcell $2 $3 val 254;
> #P newex 580 324 26 9109513 print;
> #P user jit.pwindow 716 321 162 122 0 1 0 0 1 0;
> #P message 724 211 95 9109513 setcell $1 $2 val 254;
> #P newex 721 245 133 9109513 jit.matrix dots 1 char 160 120;
> #P newex 389 399 101 9109513 if $i1 == 0 then $i2 $i3;
> #P newex 432 340 48 9109513 unpack i i;
> #P newex 389 371 43 9109513 pack i i i;
> #P newex 389 311 96 9109513 jit.iter 4 char 160 120;
> #P button 1 98 15 0;
> #P user jit.pwindow 196 314 162 122 0 1 0 0 1 0;
> #P newex 48 244 66 9109513 jit.rgb2luma;
> #P message 208 48 23 9109513 653;
> #P message 165 48 18 9109513 35;
> #P newex 165 21 45 9109513 loadbang;
> #P window linecount 3;
> #P newex 48 191 122 9109513 jit.chromakey @color 0. 1. 0. 0. @mode
> 1 @tol 0.2 @fade 0.1;
> #P number 69 97 35 9 0 0 1 139 0 0 0 221 221 221 222 222 222 0 0 0;
> #P number 165 69 35 9 0 0 0 139 0 0 0 221 221 221 222 222 222 0 0 0;
> #P number 208 69 35 9 0 0 0 139 0 0 0 221 221 221 222 222 222 0 0 0;
> #P toggle 24 98 15 0;
> #P window linecount 1;
> #P newex 24 120 55 9109513 metro 100;
> #P user jit.pwindow 23 314 162 122 0 1 0 0 1 0;
> #P newex 24 153 143 9109513 jit.desktop 1 char @dim 160 120;
> #B color 5;
> #N vpatcher 15 55 615 455;
> #P button 50 57 15 0;
> #P window setfont "Sans Serif" 9.;
> #P newex 162 50 31 9109513 + 120;
> #P newex 119 50 31 9109513 + 160;
> #P newex 50 76 99 9109513 pack rect 0 0 160 120;
> #P inlet 50 37 15 0;
> #P inlet 72 56 15 0;
> #P inlet 94 56 15 0;
> #P inlet 119 30 15 0;
> #P inlet 162 30 15 0;
> #P outlet 50 100 15 0;
> #P connect 5 0 9 0;
> #P connect 9 0 6 0;
> #P connect 6 0 0 0;
> #P connect 4 0 6 1;
> #P connect 3 0 6 2;
> #P fasten 7 0 6 3 124 71 121 71;
> #P connect 2 0 7 0;
> #P fasten 8 0 6 4 167 71 143 71;
> #P connect 1 0 8 0;
> #P pop;
> #P newobj 165 105 66 9109513 p osition;
> #P user panel 193 311 168 129;
> #X brgb 26 0 248;
> #X frgb 0 0 0;
> #X border 1;
> #X rounded 0;
> #X shadow 0;
> #X done;
> #P user panel 20 311 168 129;
> #X brgb 26 0 248;
> #X frgb 0 0 0;
> #X border 1;
> #X rounded 0;
> #X shadow 0;
> #X done;
> #P connect 6 0 5 0;
> #P connect 5 0 3 0;
> #P connect 2 0 3 0;
> #P connect 16 0 3 0;
> #P connect 3 0 4 0;
> #P connect 3 0 10 0;
> #P connect 10 0 14 0;
> #P connect 9 0 5 1;
> #P connect 11 0 12 0;
> #P connect 12 0 8 0;
> #P connect 7 0 2 0;
> #P connect 8 0 2 0;
> #P connect 8 0 2 1;
> #P connect 7 0 2 2;
> #P fasten 14 0 15 0 53 290 202 290;
> #P connect 8 0 2 3;
> #P connect 11 0 13 0;
> #P connect 13 0 7 0;
> #P connect 7 0 2 4;
> #P connect 14 0 17 0;
> #P connect 17 0 18 0;
> #P connect 18 0 20 0;
> #P fasten 19 0 18 1 437 364 410 364;
> #P fasten 19 1 18 2 475 368 426 368;
> #P connect 17 1 19 0;
> #P connect 14 0 26 0;
> #P connect 26 0 24 0;
> #P connect 21 0 23 0;
> #P connect 27 0 21 0;
> #P connect 22 0 21 0;
> #P connect 16 0 21 0;
> #P connect 5 0 21 0;
> #P connect 20 0 22 0;
> #P pop;
>
>
> --
> no os preocupeis, que de viejos moriremos todos
>