Re: [PD] opencv motion tracker external HELP!
Martin,
Thanks for all your help. I have a final question about the sprintf solution.
I have managed to get the
out going(I think) but I am not quite undestanding the atol()inlet part. I
have this.
void window_getframe(t_window *x, t_symbol *sym)
{
char* decode;
char symstr;
x-sym-s_name = decode;
symstr = atol(decode);
frame = symstr;
}
But I get invalid conversion from 'char' to IplImage*'. I have to read some
more. If I used sprintf to write
to an array a string/image formatted as a pointer and then turned that pointer
to a symbol, how do i
now convert the symbol back to a pointer of the original image, which I assume
should still be in
buffer?
Alain
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
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Re: [PD] opencv motion tracker external HELP!
Alain wrote:
void window_getframe(t_window *x, t_symbol *sym)
{
char* decode;
char symstr;
x-sym-s_name = decode;
symstr = atol(decode);
frame = symstr;
}
Is this the receiving function? I would write it more like:
void window_getframe(t_window *x, t_symbol *sym)
{
IplImage * frame;
frame = (IplImage *)atol(sym-s_name);
}
Martin
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Re: [PD] opencv motion tracker external HELP!
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. 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 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
Re: [PD] opencv motion tracker external HELP!
Thanks for helping. Well I basically have a rough sketch of all the objects but I am having a tough time with the outlet system. In a nutshell opencv uses an image structure called typedef struct _IplImage. Acording to them The structure IplImage came from Intel Image Processing Library where the format is native. I can give you more information about it if you need it. My problem is sending the result from IplImage to an outlet and being able to receive it from an inlet. So far that is my bigest hurdle. I have this code: IplImage *frame = 0; x-x_outlet = outlet_new(x-x_obj, s_anything); outlet_anything(x-x_outlet, frame); Obviously with more stuff in the middle but I keep getting this error from the compiler: error: cannot convert IplImage* to t_symbol for argument 2 to void outlet_anything(_outlet*, t_symbol*, int, t_atom*) I still havent figured a way around this. I am sure its easy but... Anyway Im trying to figure out the outlet first before I tackle the inlet. Any advise? Alain From: Tim Boykett [EMAIL PROTECTED] Date: 2007/05/29 Tue AM 05:18:54 EDT To: [EMAIL PROTECTED] [EMAIL PROTECTED] Subject: Re: opencv motion tracker external HELP! Hi Alain, how is this coming along? I gather that you got the tracker working as a standalone, but no luck with the external yet. Is that right? I would be interested in perhaps helping, but I thought I would check to see what was already working. cheers, tim On 27/05/2007, at 10:35 PM, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: For the last 2 weeks I have been trying to write a motion tracking external using the blob motion tracker in opencv. I had success with writing a program that recieves a path to an avi and motion tracks the blobs and prints their position. Now I am writing the set of Pd externals using the same code with very little success. I need someone that knows what they are doing to look at my Pd code and show me what I am doing wrong. I have read and followed IOhannes guide on external writing. Also, I have looked at the zexy and pdp sorce code in order to learn but still I am not getting it to work. The externals are based on the already working code I was able to frankenstein together. I am calling it FTIR_Tools. It consist of the following (if I ever get them to work!): 1. FTIR_Cam: detects webcam and sends out frames to outlet. 2. FTIR_VPlayer: reads quicktimes from path and sends out frames to outlet. 3. FTIR_Tracker: tracks blobs, sends out matrix blob# position to outlet2 and frames to outlet 1. you can also turn on and off visuals for center point and bounding box. 4. FTIR_Window: displays frames in an X11 window. Please look at my code and show me how to fix it. I am getting nowhere. In the cvBloblib.zip is the program I put together called Tracker and the code called Tracker.cpp. If you want to see how it works drag it to terminal and follow it with a path to an .avi. You must have opencv and fink installed. If you have ploblems installing opencv post and I will be glad to help. Thanks, Alain FTIR_Tools(src).zip cvBloblib.zip ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/ listinfo/pd-list ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] opencv motion tracker external HELP!
[EMAIL PROTECTED] wrote: Thanks for helping. Well I basically have a rough sketch of all the objects but I am having a tough time with the outlet system. In a nutshell opencv uses an image structure called typedef struct _IplImage. Acording to them The structure IplImage came from Intel Image Processing Library where the format is native. I can give you more information about it if you need it. My problem is sending the result from IplImage to an outlet and being able to receive it from an inlet. So far that is my bigest hurdle. I have this code: IplImage *frame = 0; x-x_outlet = outlet_new(x-x_obj, s_anything); outlet_anything(x-x_outlet, frame); Obviously with more stuff in the middle but I keep getting this error from the compiler: whoa don't do that. if you are sure that you have to send pointers around, then you should a) have a look at Gem (where this is done) or GridFlow and b) don't do it (Gem is using this for legacy reasons); really. even though pd has pointers, they are not meant for passing arbitrary data around. if you want to do it the clean way, you will have to create ids (numeric or symbolic), associate your data-chunks with ids, pass the ids through pd's messaging system and look them up at the receiving side. pdp does it like this. an alternative might be mrpeach's string/blob patch, but then you would rely on a patched pd, which is not a very good idea. if you are not sure, then i suggest to not do it that way (unless you want to spend some time in getting into coding) otoh, why don't you just use the Gem framework? i guess that you could fit the IplImage into an imageStruct with not much overhead (but then i don't know this structure; if it is fundamentally different from Gem's imageStruct you might lose everything you gained speedwise) if nothing else works, it might be simplest to just write your own application (without pd) and send the data to pd via your favourite protocol (FUDI, OSC, SMTP...) ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
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? Alain From: IOhannes m zmoelnig [EMAIL PROTECTED] Date: 2007/05/29 Tue AM 10:40:29 EDT To: [EMAIL PROTECTED] CC: Tim Boykett [EMAIL PROTECTED], pd-list@iem.at Subject: Re: [PD] opencv motion tracker external HELP! [EMAIL PROTECTED] wrote: Thanks for helping. Well I basically have a rough sketch of all the objects but I am having a tough time with the outlet system. In a nutshell opencv uses an image structure called typedef struct _IplImage. Acording to them The structure IplImage came from Intel Image Processing Library where the format is native. I can give you more information about it if you need it. My problem is sending the result from IplImage to an outlet and being able to receive it from an inlet. So far that is my bigest hurdle. I have this code: IplImage *frame = 0; x-x_outlet = outlet_new(x-x_obj, s_anything); outlet_anything(x-x_outlet, frame); Obviously with more stuff in the middle but I keep getting this error from the compiler: whoa don't do that. if you are sure that you have to send pointers around, then you should a) have a look at Gem (where this is done) or GridFlow and b) don't do it (Gem is using this for legacy reasons); really. even though pd has pointers, they are not meant for passing arbitrary data around. if you want to do it the clean way, you will have to create ids (numeric or symbolic), associate your data-chunks with ids, pass the ids through pd's messaging system and look them up at the receiving side. pdp does it like this. an alternative might be mrpeach's string/blob patch, but then you would rely on a patched pd, which is not a very good idea. if you are not sure, then i suggest to not do it that way (unless you want to spend some time in getting into coding) otoh, why don't you just use the Gem framework? i guess that you could fit the IplImage into an imageStruct with not much overhead (but then i don't know this structure; if it is fundamentally different from Gem's imageStruct you might lose everything you gained speedwise) if nothing else works, it might be simplest to just write your own application (without pd) and send the data to pd via your favourite protocol (FUDI, OSC, SMTP...) ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] opencv motion tracker external HELP!
[EMAIL PROTECTED] wrote: 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? just out or couriosity: how does this relate to my previous email? :-) sorry to not be much of a help here, but i currently have not the time to give you the deep insights into C/C++ and pd that you would be needed. mfga.sdr. IOhannes ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] opencv motion tracker external HELP!
Hi Alain, wouldn't it be a lot easier to take the system that you already have and use OSC or FIDO to send the values (that you were printing) to PD for further processing? I am greatly in favour of using different systems for different jobs and letting a protocol like OSC or fido (netsend) connect them together. I could easily help you with that problem, if the code is running already. Cheers, tim On 27/05/2007, at 10:35 PM, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: For the last 2 weeks I have been trying to write a motion tracking external using the blob motion tracker in opencv. I had success with writing a program that recieves a path to an avi and motion tracks the blobs and prints their position. Now I am writing the set of Pd externals using the same code with very little success. I need someone that knows what they are doing to look at my Pd code and show me what I am doing wrong. I have read and followed IOhannes guide on external writing. Also, I have looked at the zexy and pdp sorce code in order to learn but still I am not getting it to work. The externals are based on the already working code I was able to frankenstein together. I am calling it FTIR_Tools. It consist of the following (if I ever get them to work!): 1. FTIR_Cam: detects webcam and sends out frames to outlet. 2. FTIR_VPlayer: reads quicktimes from path and sends out frames to outlet. 3. FTIR_Tracker: tracks blobs, sends out matrix blob# position to outlet2 and frames to outlet 1. you can also turn on and off visuals for center point and bounding box. 4. FTIR_Window: displays frames in an X11 window. Please look at my code and show me how to fix it. I am getting nowhere. In the cvBloblib.zip is the program I put together called Tracker and the code called Tracker.cpp. If you want to see how it works drag it to terminal and follow it with a path to an .avi. You must have opencv and fink installed. If you have ploblems installing opencv post and I will be glad to help. Thanks, Alain FTIR_Tools(src).zip cvBloblib.zip ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/ listinfo/pd-list ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] opencv motion tracker external HELP!
Martin, Thanks for your insight. I will look into that. It seems like sprintf/atoi is what I need to be looking at. Alain From: [EMAIL PROTECTED] Date: 2007/05/29 Tue AM 11:51:36 EDT To: pd-list@iem.at CC: Tim Boykett [EMAIL PROTECTED], IOhannes m zmoelnig [EMAIL PROTECTED], [EMAIL PROTECTED] 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 ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] opencv motion tracker external HELP!
The Intel library struct is a different data type than the Pd symbol data type. Pd doesn't have any idea what your frame pointer is pointing to so it throw that error. You really need to have a working knowledge of C data types to do what you want to do. On 5/29/07, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: 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? Alain From: IOhannes m zmoelnig [EMAIL PROTECTED] Date: 2007/05/29 Tue AM 10:40:29 EDT To: [EMAIL PROTECTED] CC: Tim Boykett [EMAIL PROTECTED], pd-list@iem.at Subject: Re: [PD] opencv motion tracker external HELP! [EMAIL PROTECTED] wrote: Thanks for helping. Well I basically have a rough sketch of all the objects but I am having a tough time with the outlet system. In a nutshell opencv uses an image structure called typedef struct _IplImage. Acording to them The structure IplImage came from Intel Image Processing Library where the format is native. I can give you more information about it if you need it. My problem is sending the result from IplImage to an outlet and being able to receive it from an inlet. So far that is my bigest hurdle. I have this code: IplImage *frame = 0; x-x_outlet = outlet_new(x-x_obj, s_anything); outlet_anything(x-x_outlet, frame); Obviously with more stuff in the middle but I keep getting this error from the compiler: whoa don't do that. if you are sure that you have to send pointers around, then you should a) have a look at Gem (where this is done) or GridFlow and b) don't do it (Gem is using this for legacy reasons); really. even though pd has pointers, they are not meant for passing arbitrary data around. if you want to do it the clean way, you will have to create ids (numeric or symbolic), associate your data-chunks with ids, pass the ids through pd's messaging system and look them up at the receiving side. pdp does it like this. an alternative might be mrpeach's string/blob patch, but then you would rely on a patched pd, which is not a very good idea. if you are not sure, then i suggest to not do it that way (unless you want to spend some time in getting into coding) otoh, why don't you just use the Gem framework? i guess that you could fit the IplImage into an imageStruct with not much overhead (but then i don't know this structure; if it is fundamentally different from Gem's imageStruct you might lose everything you gained speedwise) if nothing else works, it might be simplest to just write your own application (without pd) and send the data to pd via your favourite protocol (FUDI, OSC, SMTP...) ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] opencv motion tracker external HELP!
You are right it would be. It would also be easier to make a self contained external with just one object and just use pd message system to output a list. I appreciate your help. I guess I will try to finish what I started using Martins suggestions and work on a standalone app at the same time. Is there a good reference webpage on how to integrate OSC that you can point me to? would the cpu take a buigger performance hit this way? Alain From: Tim Boykett [EMAIL PROTECTED] Date: 2007/05/29 Tue AM 11:45:08 EDT To: [EMAIL PROTECTED] [EMAIL PROTECTED] CC: pd-list@iem.at, [EMAIL PROTECTED] Subject: Re: [PD] opencv motion tracker external HELP! Hi Alain, wouldn't it be a lot easier to take the system that you already have and use OSC or FIDO to send the values (that you were printing) to PD for further processing? I am greatly in favour of using different systems for different jobs and letting a protocol like OSC or fido (netsend) connect them together. I could easily help you with that problem, if the code is running already. Cheers, tim ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
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 ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] opencv motion tracker external HELP!
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: [EMAIL PROTECTED] Date: 2007/05/29 Tue AM 11:51:36 EDT To: pd-list@iem.at CC: Tim Boykett [EMAIL PROTECTED], IOhannes m zmoelnig [EMAIL PROTECTED], [EMAIL PROTECTED] 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 ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] opencv motion tracker external HELP!
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 Description: GNU Zip compressed data ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] opencv motion tracker external HELP!
Alain wrote: 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. That looks like a c++ error to me, maybe you should be compiling it as c? Martin ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] opencv motion tracker external HELP!
I think I figured it out. It looks like I have to use t_symbol *sym
instead of t_symbol sym and the outlet has to be x-outlet_new(x-
x_outlet0, *sym). That seemed to work. The weird problem I am
having now it I get an error with the return(void *)x; I get error:
return-statement with a value, in function returning 'void'.
Now I see return(void *)x; on almost all the external codes so I
don't get it. I am also getting an error on the void your_class_setup
(void) { part too.
Error: a function-definition is not allowed here before '{' token.
I am confused. About compiling as C, the problem is that I am using c
++ headers from the opencv library and I don't know if I can compile
as C?
Thanks alot for your help.
Alain
On May 29, 2007, at 5:25 PM, [EMAIL PROTECTED] wrote:
Alain wrote:
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.
That looks like a c++ error to me, maybe you should be compiling it
as c?
Martin
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Re: [PD] opencv motion tracker external HELP!
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
Re: [PD] opencv motion tracker external HELP!
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 ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] opencv motion tracker external HELP!
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. 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 ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] opencv motion tracker external HELP!
I haven't looked at this yet, and have no external coding experience. However, I'm wondering if it would be an easier task to port this library to mimic the pix_* objects in Gem? Maybe you could look at the Gem source and figure out how to do this. Or better yet, compare the code you have here with the pix_multiblob, and try to correct the algorithms as was suggested earlier. Good luck!!! ~Kyle On 5/27/07, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: For the last 2 weeks I have been trying to write a motion tracking external using the blob motion tracker in opencv. I had success with writing a program that recieves a path to an avi and motion tracks the blobs and prints their position. Now I am writing the set of Pd externals using the same code with very little success. I need someone that knows what they are doing to look at my Pd code and show me what I am doing wrong. I have read and followed IOhannes guide on external writing. Also, I have looked at the zexy and pdp sorce code in order to learn but still I am not getting it to work. The externals are based on the already working code I was able to frankenstein together. I am calling it FTIR_Tools. It consist of the following (if I ever get them to work!): 1. FTIR_Cam: detects webcam and sends out frames to outlet. 2. FTIR_VPlayer: reads quicktimes from path and sends out frames to outlet. 3. FTIR_Tracker: tracks blobs, sends out matrix blob# position to outlet2 and frames to outlet 1. you can also turn on and off visuals for center point and bounding box. 4. FTIR_Window: displays frames in an X11 window. Please look at my code and show me how to fix it. I am getting nowhere. In the cvBloblib.zip is the program I put together called Tracker and the code called Tracker.cpp. If you want to see how it works drag it to terminal and follow it with a path to an .avi. You must have opencv and fink installed. If you have ploblems installing opencv post and I will be glad to help. Thanks, Alain ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list -- - - - -- http://perhapsidid.wordpress.com ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] opencv motion tracker external HELP!
The Gem stuff is complex and done by people who actually know what they are doing. All I am trying to do is port parts of an already made (and very,very simple to code) library to Pd. I also have no coding experience except for this project. I have never even seen C code before 2 weeks ago, but the C code for opencv is easy enough for a noob like me to write an application that calls on those libraries. If you are interested check out my Tracker.cpp code. The difficult part (for me) is turning that code into something Pd can use. Also since it would require that you compile and install opencv I think it would be a pain for the enduser to be included inside Gem. I think most people that use Gem are not interested in a blob tracker. That is why I needed to write my own. My goal is to use the tracker output to control Geos in Gem using iemmatrix and other goodies. BTW the algorithms for pix_multiblob are way, way over my head(seriously)! Alain From: Kyle Klipowicz [EMAIL PROTECTED] Date: 2007/05/27 Sun PM 10:17:02 EDT To: [EMAIL PROTECTED] [EMAIL PROTECTED] CC: pd-list@iem.at, [EMAIL PROTECTED] Subject: Re: [PD] opencv motion tracker external HELP! I haven't looked at this yet, and have no external coding experience. However, I'm wondering if it would be an easier task to port this library to mimic the pix_* objects in Gem? Maybe you could look at the Gem source and figure out how to do this. Or better yet, compare the code you have here with the pix_multiblob, and try to correct the algorithms as was suggested earlier. Good luck!!! ~Kyle On 5/27/07, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: For the last 2 weeks I have been trying to write a motion tracking external using the blob motion tracker in opencv. I had success with writing a program that recieves a path to an avi and motion tracks the blobs and prints their position. Now I am writing the set of Pd externals using the same code with very little success. I need someone that knows what they are doing to look at my Pd code and show me what I am doing wrong. I have read and followed IOhannes guide on external writing. Also, I have looked at the zexy and pdp sorce code in order to learn but still I am not getting it to work. The externals are based on the already working code I was able to frankenstein together. I am calling it FTIR_Tools. It consist of the following (if I ever get them to work!): 1. FTIR_Cam: detects webcam and sends out frames to outlet. 2. FTIR_VPlayer: reads quicktimes from path and sends out frames to outlet. 3. FTIR_Tracker: tracks blobs, sends out matrix blob# position to outlet2 and frames to outlet 1. you can also turn on and off visuals for center point and bounding box. 4. FTIR_Window: displays frames in an X11 window. Please look at my code and show me how to fix it. I am getting nowhere. In the cvBloblib.zip is the program I put together called Tracker and the code called Tracker.cpp. If you want to see how it works drag it to terminal and follow it with a path to an .avi. You must have opencv and fink installed. If you have ploblems installing opencv post and I will be glad to help. Thanks, Alain ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list -- - - - -- http://perhapsidid.wordpress.com ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] opencv motion tracker external HELP!
The Gem stuff is complex and done by people who actually know what they are doing. All I am trying to do is port parts of an already made (and very,very simple to code) library to Pd. I also have no coding experience except for this project. I have never even seen C code before 2 weeks ago, but the C code for opencv is easy enough for a noob like me to write an application that calls on those libraries. If you are interested check out my Tracker.cpp code. The difficult part (for me) is turning that code into something Pd can use. Also since it would require that you compile and install opencv I think it would be a pain for the enduser to be included inside Gem. I think most people that use Gem are not interested in a blob tracker. That is why I needed to write my own. My goal is to use the tracker output to control Geos in Gem using iemmatrix and other goodies. BTW the algorithms for pix_multiblob are way, way over my head(seriously)! Alain From: Kyle Klipowicz [EMAIL PROTECTED] Date: 2007/05/27 Sun PM 10:17:02 EDT To: [EMAIL PROTECTED] [EMAIL PROTECTED] CC: pd-list@iem.at, [EMAIL PROTECTED] Subject: Re: [PD] opencv motion tracker external HELP! I haven't looked at this yet, and have no external coding experience. However, I'm wondering if it would be an easier task to port this library to mimic the pix_* objects in Gem? Maybe you could look at the Gem source and figure out how to do this. Or better yet, compare the code you have here with the pix_multiblob, and try to correct the algorithms as was suggested earlier. Good luck!!! ~Kyle On 5/27/07, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: For the last 2 weeks I have been trying to write a motion tracking external using the blob motion tracker in opencv. I had success with writing a program that recieves a path to an avi and motion tracks the blobs and prints their position. Now I am writing the set of Pd externals using the same code with very little success. I need someone that knows what they are doing to look at my Pd code and show me what I am doing wrong. I have read and followed IOhannes guide on external writing. Also, I have looked at the zexy and pdp sorce code in order to learn but still I am not getting it to work. The externals are based on the already working code I was able to frankenstein together. I am calling it FTIR_Tools. It consist of the following (if I ever get them to work!): 1. FTIR_Cam: detects webcam and sends out frames to outlet. 2. FTIR_VPlayer: reads quicktimes from path and sends out frames to outlet. 3. FTIR_Tracker: tracks blobs, sends out matrix blob# position to outlet2 and frames to outlet 1. you can also turn on and off visuals for center point and bounding box. 4. FTIR_Window: displays frames in an X11 window. Please look at my code and show me how to fix it. I am getting nowhere. In the cvBloblib.zip is the program I put together called Tracker and the code called Tracker.cpp. If you want to see how it works drag it to terminal and follow it with a path to an .avi. You must have opencv and fink installed. If you have ploblems installing opencv post and I will be glad to help. Thanks, Alain ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list -- - - - -- http://perhapsidid.wordpress.com ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
