I just realized I should be posting in the pd-dev list so from now on any questions I have relating to this project will be posted there.
Martin, I am getting a weird error when I try sym = gensym(symstr); I get no match for 'operator=' in 'sym = gensym(((char*)(& symstr)))' I dont know what thats all about. I have seen this used before with no problems. Alain
From: martin.peach@sympatico.ca Date: 2007/05/29 Tue AM 11:51:36 EDT To: pd-list@iem.at CC: Tim Boykett tim@timesup.org, IOhannes m zmoelnig zmoelnig@iem.at,
Subject: Re: Re: [PD] opencv motion tracker external HELP!
I dont think I quite understood. I tried:
#define FRAMEOUT frame
IplImage *frame = 0;
x->x_outlet = outlet_new(&x->x_obj, &s_anything); outlet_anything(x->x_outlet, FRAMEOUT);
with the same results. Maybe someone can dumb it down for me?
You can only work with atoms in pd's message system, and each atom usually contains a bang, a
float or a symbol. You could convert the pointer to a float but it probably won't work because the pointer is a large integer that won't be accurately represented as a float. You could convert the pointer to a symbol using something like:
char symstr[10]; t_symbol sym; sprintf(symstr, "%p", frame); sym = gensym(symstr); ...then send sym through the outlet and convert it back to a pointer at the receiving end by extracting
the string from the s_name field of the symbol and passing it to atol().
Martin
Hi Alain,
I've used the OpenCV blobtracker with Pd before, and I simply send blob positions and sizes over UDP using u_pdsend.c
I've attached my code and makefile... look in blobtrack.c and search for where I use the pdsend_init() and pdsend_message() functions... it's pretty simple.
Then you just use [netreceive] in Pd and parse the list as you deem necessary.
Hope this helps, -Mike
P.S. my blobtracker code is meant for use with a live camera, not with .avi files.
Thanks Mike,
Its awsome how helpful people in this community can be. I will check
out you code and modify it if need be, like add the option to use an
avi in order to be able to calibrate things and such and I will post
it. I will also continue to figure out the external because I think
that would be a neater approach and cause I dont accept defeat very
easily.
Alain
On May 29, 2007, at 4:55 PM, Mike Wozniewski wrote:
Hi Alain,
I've used the OpenCV blobtracker with Pd before, and I simply send
blob positions and sizes over UDP using u_pdsend.cI've attached my code and makefile... look in blobtrack.c and
search for where I use the pdsend_init() and pdsend_message()
functions... it's pretty simple.Then you just use [netreceive] in Pd and parse the list as you deem
necessary.Hope this helps, -Mike
P.S. my blobtracker code is meant for use with a live camera, not
with .avi files. <blobTracker.tar.gz>
I see you have the ability to capture from an avi built in already:
avi_name = argv[i];
if (avi_name) pCap = cvCaptureFromFile(avi_name);
else pCap = cvCaptureFromCAM( 0 )
This is code looks great. I could figure it out from the code but if
you have any use instructions let me know. It would be great to get a
gui for this thing. I will try to figure that out.
Thank you,
Alain
On May 29, 2007, at 6:58 PM, Nose Hair wrote:
Thanks Mike,
Its awsome how helpful people in this community can be. I will check out you code and modify it if need be, like add the option to use an avi in order to be able to calibrate things and such and I will post it. I will also continue to figure out the external because I think that would be a neater approach and cause I dont accept defeat very easily. Alain
On May 29, 2007, at 4:55 PM, Mike Wozniewski wrote:
Hi Alain,
I've used the OpenCV blobtracker with Pd before, and I simply send blob positions and sizes over UDP using u_pdsend.c
I've attached my code and makefile... look in blobtrack.c and search for where I use the pdsend_init() and pdsend_message() functions... it's pretty simple.
Then you just use [netreceive] in Pd and parse the list as you deem necessary.
Hope this helps, -Mike
P.S. my blobtracker code is meant for use with a live camera, not with .avi files. <blobTracker.tar.gz>
PD-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/ listinfo/pd-list
Sorry forgot to ask. Do you have a pd abstraction for this? If not I
will see what I can cook up. I think iemmatrix might do the trick.
Alain
On May 29, 2007, at 8:08 PM, Nose Hair wrote:
I see you have the ability to capture from an avi built in already: avi_name = argv[i]; if (avi_name) pCap = cvCaptureFromFile(avi_name); else pCap = cvCaptureFromCAM( 0 ) This is code looks great. I could figure it out from the code but
if you have any use instructions let me know. It would be great to
get a gui for this thing. I will try to figure that out. Thank you, AlainOn May 29, 2007, at 6:58 PM, Nose Hair wrote:
Thanks Mike,
Its awsome how helpful people in this community can be. I will check out you code and modify it if need be, like add the option to use an avi in order to be able to calibrate things and such and I will post it. I will also continue to figure out the external because I think that would be a neater approach and cause I dont accept defeat very easily. Alain
On May 29, 2007, at 4:55 PM, Mike Wozniewski wrote:
Hi Alain,
I've used the OpenCV blobtracker with Pd before, and I simply send blob positions and sizes over UDP using u_pdsend.c
I've attached my code and makefile... look in blobtrack.c and search for where I use the pdsend_init() and pdsend_message() functions... it's pretty simple.
Then you just use [netreceive] in Pd and parse the list as you deem necessary.
Hope this helps, -Mike
P.S. my blobtracker code is meant for use with a live camera, not with .avi files. <blobTracker.tar.gz>
PD-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/ listinfo/pd-list
Yeah, I took the openCV blobtrack code from the examples and modified it just slightly. I didn't document all the changes, because it was never meant to last for more than one project. I simply added the pd netsend stuff, added a few sliders to control parameters, added an automatic background model refresher, and blacked out some areas of the image that I didn't want processed.
Attached is the patch that I use to receive the blob data in Pd (also with some customizations).
-Mike
Nose Hair wrote:
Sorry forgot to ask. Do you have a pd abstraction for this? If not I will see what I can cook up. I think iemmatrix might do the trick. Alain On May 29, 2007, at 8:08 PM, Nose Hair wrote:
I see you have the ability to capture from an avi built in already: avi_name = argv[i]; if (avi_name) pCap = cvCaptureFromFile(avi_name); else pCap = cvCaptureFromCAM( 0 ) This is code looks great. I could figure it out from the code but if you have any use instructions let me know. It would be great to get a gui for this thing. I will try to figure that out. Thank you, Alain
On May 29, 2007, at 6:58 PM, Nose Hair wrote:
Thanks Mike,
Its awsome how helpful people in this community can be. I will check
out you code and modify it if need be, like add the option to use an
avi in order to be able to calibrate things and such and I will post
it. I will also continue to figure out the external because I think
that would be a neater approach and cause I dont accept defeat very
easily. AlainOn May 29, 2007, at 4:55 PM, Mike Wozniewski wrote:
Hi Alain,
I've used the OpenCV blobtracker with Pd before, and I simply send
blob positions and sizes over UDP using u_pdsend.cI've attached my code and makefile... look in blobtrack.c and
search for where I use the pdsend_init() and pdsend_message()
functions... it's pretty simple.Then you just use [netreceive] in Pd and parse the list as you deem
necessary.Hope this helps, -Mike
P.S. my blobtracker code is meant for use with a live camera, not
with .avi files. <blobTracker.tar.gz>
PD-list@iem.at mailto:PD-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
#N struct trackerBlob float x float y float left float right float top float bottom symbol s; #N canvas 106 312 848 581 10; #X obj 106 -74 netreceive 8779; #X floatatom 206 -48 5 0 0 0 - - -; #N canvas 766 236 481 416 blob-data 0; #X scalar trackerBlob 127 312 -14 14 -13.5 13.5 blob1 ;; #X scalar trackerBlob 487 114 -13 13 -14.5 14.5 blob2 ;; #X scalar trackerBlob 471 63 -12.5 12.5 -14.5 14.5 blob3 ;; #X scalar trackerBlob 508 335 -16 16 -13 13 blob4 ;; #X scalar trackerBlob 184 285 -14.5 14.5 -19 19 blob5 ;; #X scalar trackerBlob 174 278 -17 17 -19.5 19.5 blob6 ;; #X coords 0 0 640 480 320 240 1; #X restore 436 -8 pd blob-data; #N canvas 84 22 1043 689 draw-blobs 0; #X obj 379 615 pointer; #X msg 379 593 traverse pd-blob-data , next; #X obj 409 505 pointer; #X msg 409 483 traverse pd-blob-data , next , next; #X obj 409 462 loadbang; #X obj 379 572 loadbang; #X obj 441 401 pointer; #X obj 441 358 loadbang; #X msg 441 379 traverse pd-blob-data , next , next , next; #X obj 485 297 pointer; #X obj 485 254 loadbang; #X msg 485 275 traverse pd-blob-data , next , next , next , next ; #X obj 97 640 set trackerBlob x y left right top bottom; #X obj 48 64 inlet; #X obj 238 615 * 0.5; #X obj 285 615 * -0.5; #X obj 191 615 * -0.5; #X obj 97 578 unpack 0 0 0 0; #X obj 332 615 * 0.5; #X obj 127 530 set trackerBlob x y left right top bottom; #X obj 268 505 * 0.5; #X obj 315 505 * -0.5; #X obj 221 505 * -0.5; #X obj 127 468 unpack 0 0 0 0; #X obj 362 505 * 0.5; #X obj 159 426 set trackerBlob x y left right top bottom; #X obj 300 401 * 0.5; #X obj 347 401 * -0.5; #X obj 253 401 * -0.5; #X obj 159 364 unpack 0 0 0 0; #X obj 394 401 * 0.5; #X obj 203 322 set trackerBlob x y left right top bottom; #X obj 344 297 * 0.5; #X obj 391 297 * -0.5; #X obj 297 297 * -0.5; #X obj 203 260 unpack 0 0 0 0; #X obj 438 297 * 0.5; #X obj 48 92 route 1 2 3 4 5 6; #X obj 511 192 pointer; #X obj 511 149 loadbang; #X obj 229 217 set trackerBlob x y left right top bottom; #X obj 370 192 * 0.5; #X obj 417 192 * -0.5; #X obj 323 192 * -0.5; #X obj 229 155 unpack 0 0 0 0; #X obj 464 192 * 0.5; #X msg 511 170 traverse pd-blob-data , next , next , next , next , next; #X obj 531 82 pointer; #X obj 531 39 loadbang; #X obj 249 107 set trackerBlob x y left right top bottom; #X obj 390 82 * 0.5; #X obj 437 82 * -0.5; #X obj 343 82 * -0.5; #X obj 249 45 unpack 0 0 0 0; #X obj 484 82 * 0.5; #X msg 531 60 traverse pd-blob-data , next , next , next , next , next , next; #X connect 0 0 12 6; #X connect 1 0 0 0; #X connect 2 0 19 6; #X connect 3 0 2 0; #X connect 4 0 3 0; #X connect 5 0 1 0; #X connect 6 0 25 6; #X connect 7 0 8 0; #X connect 8 0 6 0; #X connect 9 0 31 6; #X connect 10 0 11 0; #X connect 11 0 9 0; #X connect 13 0 37 0; #X connect 14 0 12 3; #X connect 15 0 12 4; #X connect 16 0 12 2; #X connect 17 0 12 0; #X connect 17 1 12 1; #X connect 17 2 14 0; #X connect 17 2 16 0; #X connect 17 3 15 0; #X connect 17 3 18 0; #X connect 18 0 12 5; #X connect 20 0 19 3; #X connect 21 0 19 4; #X connect 22 0 19 2; #X connect 23 0 19 0; #X connect 23 1 19 1; #X connect 23 2 20 0; #X connect 23 2 22 0; #X connect 23 3 21 0; #X connect 23 3 24 0; #X connect 24 0 19 5; #X connect 26 0 25 3; #X connect 27 0 25 4; #X connect 28 0 25 2; #X connect 29 0 25 0; #X connect 29 1 25 1; #X connect 29 2 26 0; #X connect 29 2 28 0; #X connect 29 3 27 0; #X connect 29 3 30 0; #X connect 30 0 25 5; #X connect 32 0 31 3; #X connect 33 0 31 4; #X connect 34 0 31 2; #X connect 35 0 31 0; #X connect 35 1 31 1; #X connect 35 2 32 0; #X connect 35 2 34 0; #X connect 35 3 33 0; #X connect 35 3 36 0; #X connect 36 0 31 5; #X connect 37 0 17 0; #X connect 37 1 23 0; #X connect 37 2 29 0; #X connect 37 3 35 0; #X connect 37 4 44 0; #X connect 37 5 53 0; #X connect 38 0 40 6; #X connect 39 0 46 0; #X connect 41 0 40 3; #X connect 42 0 40 4; #X connect 43 0 40 2; #X connect 44 0 40 0; #X connect 44 1 40 1; #X connect 44 2 41 0; #X connect 44 2 43 0; #X connect 44 3 42 0; #X connect 44 3 45 0; #X connect 45 0 40 5; #X connect 46 0 38 0; #X connect 47 0 49 6; #X connect 48 0 55 0; #X connect 50 0 49 3; #X connect 51 0 49 4; #X connect 52 0 49 2; #X connect 53 0 49 0; #X connect 53 1 49 1; #X connect 53 2 50 0; #X connect 53 2 52 0; #X connect 53 3 51 0; #X connect 53 3 54 0; #X connect 54 0 49 5; #X connect 55 0 47 0; #X restore 380 355 pd draw-blobs; #N canvas 240 96 580 193 trackerBlob 0; #X obj 37 35 struct trackerBlob float x float y float left float right float top float bottom symbol s; #X obj 39 71 filledcurve 9 left 0 0 bottom right 0 0 top left 0; #X obj 45 112 drawsymbol s -25 -40 0 1 blob; #X restore 656 232 pd trackerBlob; #X obj 436 302 tgl 25 0 empty empty DEBUG -10 -15 1 12 -262144 -1 -1 0 1; #X obj 379 314 spigot; #X text 434 -24 0; #X text 732 -24 640; #X obj 491 273 nbx 5 14 -1e+37 1e+37 0 0 empty empty empty 0 -8 0 10 -262144 -1 -1 0 256; #X obj 551 273 nbx 5 14 -1e+37 1e+37 0 0 empty empty empty 0 -8 0 10 -262144 -1 -1 0 256; #X obj 482 324 hotpack7 6 0 0 0 0; #X msg 619 279 40; #X text 760 -9 0; #X text 760 219 480; #X obj 105 296 route 1 2 3 4 5 6; #X obj 181 434 s 1-blob-data; #X obj 191 414 s 2-blob-data; #X obj 201 394 s 3-blob-data; #X obj 231 334 s 6-blob-data; #X obj 221 354 s 5-blob-data; #X obj 211 374 s 4-blob-data; #X obj 106 274 spigot; #X obj 163 259 tgl 25 0 empty empty TRACKING_ENABLE -10 -15 1 12 -262144 -1 -1 1 1; #X obj 159 36 split 0 480; #X obj 107 -8 unpack 0 0 0 0 0; #X obj 105 189 pack 0 0 0 0 0; #X msg 230 113 -1; #X obj 143 136 != -1; #X obj 106 161 spigot; #X floatatom 268 87 5 0 0 1 low - -; #X floatatom 257 6 5 0 0 0 - - -; #X text 327 74 clip on Y; #X text 258 17 clip on X; #X floatatom 307 256 5 0 0 0 - - -; #X floatatom 356 256 5 0 0 0 - - -; #X floatatom 266 70 5 0 0 1 hi - -; #X floatatom 401 255 5 0 0 0 - - -; #X obj 333 188 unpack 0 0 0; #X obj 135 80 split 90 610; #X obj 164 219 r blob-tracker; #X connect 0 0 25 0; #X connect 0 1 1 0; #X connect 5 0 6 1; #X connect 6 0 3 0; #X connect 9 0 11 1; #X connect 10 0 11 2; #X connect 11 0 3 0; #X connect 12 0 11 4; #X connect 12 0 11 3; #X connect 15 0 16 0; #X connect 15 0 38 0; #X connect 15 1 17 0; #X connect 15 2 18 0; #X connect 15 3 21 0; #X connect 15 4 20 0; #X connect 15 5 19 0; #X connect 22 0 15 0; #X connect 23 0 22 1; #X connect 24 0 28 0; #X connect 24 0 26 2; #X connect 24 1 27 0; #X connect 25 0 29 0; #X connect 25 1 39 0; #X connect 25 2 24 0; #X connect 25 3 26 3; #X connect 25 4 26 4; #X connect 26 0 22 0; #X connect 26 0 6 0; #X connect 27 0 28 0; #X connect 28 0 29 1; #X connect 29 0 26 0; #X connect 30 0 39 1; #X connect 31 0 24 1; #X connect 36 0 39 2; #X connect 38 0 34 0; #X connect 38 1 35 0; #X connect 38 2 37 0; #X connect 39 0 28 0; #X connect 39 0 26 1; #X connect 39 1 27 0; #X connect 40 0 23 0;
-
Mike Wozniewski -
Nose Hair -
nosehair911＠bellsouth.net