Hi, I have to access up to 3 cameras in my program. I am using highgui CvCapture structure and asso. functions to access the cameras (Logitech PRO 4000 - USB...
10721
fritschgmbh <frits...
fritschgmbh
Feb 1, 2003 6:43 pm
Hi, I need to recognize rows of rectangles. The problem is that there is not just one but 2 or 3 rows of rectangles in one picture and the rows could have...
10722
J.P. Mellor
jpmellorus
Feb 1, 2003 10:21 pm
I believe there is a bug in cvInitMatHeader. The following call produces a matrix with a step of 0. cvInitMatHeader(MatC, 3, 3, CV_32FC1, NULL, CV_AUTO_STEP);...
10723
braguista_pt <fr@....
braguista_pt
Feb 1, 2003 11:36 pm
It is actually possible to see a continuous video feed while adjusting the parameters if you use VFW eg. Camera class. One good example is the Lucas Kanade...
10724
Bob Davies <bobdav...
bobdavies2000us
Feb 2, 2003 7:42 pm
Anadi I would make sure that you have the latest driver for the camera. The Vicam USB camera was in a similar state a few years back where you could not access...
10725
Bob Davies <bobdav...
bobdavies2000us
Feb 2, 2003 7:46 pm
Markus Fritsch, Try this sample program: C:\Program Files\OpenCV\samples\c\squares.c It works pretty well at finding rectangles at any angle. Bob Davies...
10726
and1rewt <and1rewt...
and1rewt
Feb 3, 2003 1:53 am
Given the headaches I have been through I figured I can be some help here: I managed to get 4 USB 2.0 Cams working at 30fps each using DirectShow. (Can't do...
10727
irene_he <irene_he...
irene_he
Feb 3, 2003 2:44 am
Sorry, I can't post code here. Actually I am not writting my code in C/C++, but translate into LabVIEW, a programming language for measurement and automation,...
10728
Molinov, Sergey
smoli_ru
Feb 3, 2003 4:44 am
Irene, This is a bug :( Will be fixed in the nearest update. To fix it replace line 1022 of cvcmp.cpp with icvInitMaxCC1RTable( &minmaxs_tab[1] ); You are...
10729
karmelealberto <kf...
karmelealberto
Feb 3, 2003 9:37 am
Hello, When I use the function cvShowImage I get a new window with the image. I would like to get that window inside my MDI application, like a child window,...
10730
???
leeyounbaek
Feb 3, 2003 1:01 pm
Unscribe please~...
10731
???
younbaek@...
Feb 3, 2003 1:01 pm
Unscribe please~...
10732
이연백
younbaek@...
Feb 3, 2003 1:07 pm
unsubscribe me...
10733
이연백
leeyounbaek
Feb 3, 2003 1:07 pm
unsubscribe me...
10734
Pisarevsky, Vadim
vp153
Feb 3, 2003 2:43 pm
Thank you, I've fixed it. Vadim ... From: J.P. Mellor [mailto:jpmellor@...] Sent: Sunday, February 02, 2003 1:21 AM To: opencv@yahoogroups.com ...
10735
amh2000 <amh2000@....
amh2000
Feb 3, 2003 3:00 pm
I didn't read your older message. Thanks for the answer. ... upgrade...
10736
Bob Davies <bobdav...
bobdavies2000us
Feb 3, 2003 5:16 pm
Andrew Thanks for your post on the USB 2.0 cameras. I have 3 Firewire cameras going into one Firewire card at 15 fps. I wouldn't have room for all the USB...
10737
and1rewt <and1rewt...
and1rewt
Feb 3, 2003 6:10 pm
sorry about the confusion - yes - I mean the cvcam code. I remember seeing it hook into directDraw somehow - but I am no longer sure. I bit the bullet and...
10738
and1rewt <and1rewt...
and1rewt
Feb 3, 2003 6:17 pm
Also - I should mention that the most simple to implement API is the firewire driver from CMU. If you want to simply get a frame on demand and get it at 30fps...
10739
ismaeloarciga <ism...
ismaeloarciga
Feb 3, 2003 7:43 pm
I,m trying to do some measurements using the extrinsic and intrinsic parameters of the camera after doing the calibration, does anybody know how can I measure...
10740
Frank Wu
frankfmwu
Feb 3, 2003 7:54 pm
By only one camera or one normal images, there is no possible to reconstruct 3D information. So you cann't convert pixels into milimeters. ... From:...
10741
Rui Bento
RuiMSBento
Feb 3, 2003 7:59 pm
Is there any special driver for reading multiple USB1.1 cameras simultaneously, under WinXP? Does the function cvcamSelectCam work ? Thanks in advance Rui...
10742
ayall_gadasy@...
ayall_gadasy
Feb 3, 2003 8:00 pm
Hi ismaeloarciga, You should know the camera sensor size. Then, you should find the magnification factor from the calibration. So if the measurements distance...
10743
Bert <bertwheeler@...
Bertwheeler
Feb 3, 2003 9:45 pm
OpenCV Group As I have gotten no response to my post, I thought I would update the status and see if anyone has any other suggestions. I can successfully...
10744
danishor <d_shor@....
danishor
Feb 3, 2003 11:54 pm
Hi, If that helps, there is probably a(the) bug in cvCreateData. Another problem with cvInitMatHeader is step testing, there is no problem setting step to 6...
10745
kometes77 <island3...
kometes77
Feb 4, 2003 2:35 am
Otsu's Image Thresholding Method is famous. As far as I know, many people is using his algorithm. Can anyone provide the c source code implementing Otsu...
10746
kometes77 <island3...
kometes77
Feb 4, 2003 4:58 am
... Let me give you more information for Otsu binarization method. He published the paper Nobuyuki Otsu, "A threshold selection method from gray-level ...
10747
sandeep
sandeep_gaurkar
Feb 4, 2003 5:23 am
Hi every one Is it possible to call any dos program in vc++ program (when the code of dos program is not available ), I don't want that dos window to appear,...
10748
shake4874 <shake@....
shake4874
Feb 4, 2003 9:11 am
change lines 1277f to #define CV_IS_SEQ_SIMPLE( seq ) ((((seq)->flags & CV_SEQ_FLAG_SIMPLE) != 0) || \ CV_IS_SEQ_CONVEX(seq)) A '(' is missing in front of...
10749
mulligan_14 <mulli...
mulligan_14
Feb 4, 2003 9:41 am
Hi, I have an image with a ROI. I need to get all pixel values within the ROI. I seem to be having problems with line Value = ptr_src[0]. The currentline value...
