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#X msg 302 159 reset;
#X obj 277 188 pix_background;
#X msg 370 167 \$1 \$1 \$1;
#X msg 370 132 0.5;
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#X text 62 150 0.64;
#X text 34 151 1;
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#X obj 34 176 -;
#X text 59 177 X-Range;
#X text 280 176 Y-Range;
#X obj 53 215 expr (8/$f1);
#X obj 20 215 -;
#X obj 38 241 *;
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#X obj 68 95 min 10;
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#X obj 246 127 f;
#X obj 221 268 expr (-1*$f1)+4;
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#X obj 150 323 gemhead 15;
#X obj 357 496 circle 0.1;
#X obj 33 410 separator;
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#X obj 205 496 rectangle 0.2 0.01;
#X obj 357 410 separator;
#X msg 367 454 draw line;
#X obj 367 433 loadbang;
#X obj 152 371 colorRGB 1 0 0 1;
#X obj 32 495 rectangle 0.01 0.2;
#X msg 438 454 width \$1;
#X obj 437 398 int;
#X obj 438 425 + 1;
#X text 433 10 size;
#X text 20 13 X-coordinate;
#X text 221 11 Y-coordinate;
#X text 278 370 color red;
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#X obj 612 152 square 4;
#X obj 62 264 pix_texture;
#X obj 62 244 alpha;
#X obj 62 224 colourRGB 1 1 1 0.65;
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#X obj 62 205 spigot;
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#X obj 427 70 pix_video;
#X obj 16 114 gemwin 30;
#X msg 24 47 create;
#X msg 25 71 destroy;
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#X text 335 440 size;
#X text 315 440 Y;
#X text 289 439 X;
#X text 859 10 by Ben Bogart (ben@ekran.org);
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#X obj 278 423 pix_blob;
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#X msg 202 34 0;
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#X msg 33 92 dimen 300 300;
#X text 48 16 gem window;
#X text 449 13 live input camera [firewire/usb];
#X text 610 224 [pix_background] 'removes' the background of an image
by comparing a static image in memory to an incoming video stream.
all values withing a given range are turned black. for best effect
\, place a camera on a static scene like a blank wall and hit 'reset'.
then set the range control to cover any variance in the background.
when a new object enters the scene it will be the only thing draw against
a black background. use pix_chroma_key or pix_compare to add in images
in place of the black.;
#X text 611 199 --------------;
#X text 607 85 image of the camera;
#X text 608 93 --------------------;
#X text 610 392 Inlet 2: float: range (<f> == <f> <f> <f>);
#X text 609 341 Inlet 2: list: range \; in RGBA mode this is <+-red>
<+-green> <+-blue> \; in YUV-mode this is <+-luma> <+-Cb> <+-Cr> \;
in Gray-mode only the first value is important <+-gray>;
#X text 612 211 Description: separate an object from background;
#X text 215 80 motion tracking;
#X text 216 88 ---------------;
#X text 34 167 --------;
#X text 440 171 threshold;
#X text 605 446 [pix_blob] will calculate the "center-of-gravity" of
a certain (combination of) channel(s).;
#X text 604 434 --------------;
#X text 607 476 You can choose the combination of channels used for
the calculation by changing the <mode>. Valid modes are: 0(gray)(default)
\, 1(red) \, 2(green) \, 3(blue) \, 4(alpha);
#X text 608 520 pE: selecting "red" (1) will weight position of each
pixel with its red-value. Pixels with "more" red will be weighted stronger
\, thus moving the "center of gravity" -- the blob position -- nearer
to themself. The total amount of "red" in the image defines the size
of the blob.;
#X text 608 587 You can specify a custom combination of channels with
<color-weights>. pE: "1 0 2" will give more weight to the blue-channel
than to the red-channel \, green- and alpha-values will be ignored.
;
#X text 608 642 Specifing only one single color-weight <w> \, is the
same as "<w> <w> <w> 0";
#X text 387 190 ------------------------------- PIX_BACKGROUND;
#X text 380 424 ------------------------------- PIX_BLOB;
#X text 858 23 changed by Sara Kolster;
#X text 857 36 [text from GEM help patches];
#X msg 304 373 <mode>;
#X msg 329 395 <color-weights>;
#X text 273 529 representation of the 'movement';
#X text 274 541 by a cursor. Click on pd cursor;
#X text 273 553 to open the subpatch;
#X text 37 441 outlet 1: gemlist;
#X text 37 482 outlet 4: size;
#X text 37 468 outlet 3: Y coordinate;
#X text 37 454 outlet 2: X coordinate;
#X text 35 496 [upper left corner is 1 \, 1;
#X text 36 509 down right corner is 0 \, 0];
#X text 35 430 ----------------;
#X text 37 421 OUTPUT PIX_BLOB ---------------;
#X text 34 159 preview;
#X obj 319 668 send tracking;
#X obj 372 594 change;
#X text 317 686 send coordinates to soundpatch;
#X text 856 66 1] make gemwindow;
#X text 856 79 2] turn on rendering;
#X text 856 92 3] set the background;
#X text 857 116 5] move object and receive information;
#X text 856 104 4] turn on live input camera;
#X msg 372 615 s \$1;
#X msg 331 615 y \$1;
#X msg 292 615 x \$1;
#X msg 110 571 send x \$1;
#X msg 153 595 send y \$1;
#X msg 178 618 send s \$1;
#X msg 51 685 connect localhost 3000;
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