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Computers Forum Index » Computer Languages (Labview) » USB DRIVER FOR IMAQ
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| Vision-USB |
 Posted: Thu Dec 01, 2005 3:40 pm |
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Guest
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Hello,
I have one CreativeLabs Webcam Live ! The webcam driver is told to be
compatible with Microsoft DirectShow. After starting the Vision Assistant,
the system display a message "incorrect settings for the camera". Does
anyone have a sugestion ? The camera is working normally with the
manufacturer software.
THX ! |
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| Brooks W. |
| Posted: Fri Dec 02, 2005 6:11 pm |
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Guest
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Hi,
I am assuming that you have a USB webcam. If so, you will not be
able to use this with the Vision Assistant. Here is a portion of
the Vision Assistant help below.
You can acquire live images in Vision Assistant if you have one of
the following device and driver software combinations:
- National Instruments IMAQ device and NI-IMAQ 3.0 or later
- IEEE 1394 industrial camera and NI-IMAQ for IEEE 1394 Cameras 1.5 or later
Do you have LabVIEW? If so, then you can acquire images through
most usb cameras. You will need the USB camera VI's which you can
download from:
http://venus.ni.com/stage/we/niepd_web_display.DISPLAY_EPD4?p_answer=&p_guid=ED6942DF78E34659E034080020E74861&p_node=DZ52490&p_rank=&p_source=Internal&p_submitted=N
Please note that while NI-IMAQ for USB Cameras
comes with complete documentation, it is not supported by National
Instruments Applications Engineers.
Best Regards,
Brooks W.
National Instruments |
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| Vision-USB |
| Posted: Sat Dec 03, 2005 10:10 pm |
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Guest
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Brooks,
Thanks for your time on answering my question about USB camera.
Your assumption is correct. I have a CreativeLabs Webcam Live!
According to NI-IMAQ USB Driver Guide, this driver support Webcams,
the guide asks for launching Vision Assistant and select Acquire Image
option. That is exactly when I got the message "The settings for this camera
are not valid" message.
Yes , I have LABVIEW 7.1 (student version) installed on my PC.
Last but not least, I am afraid I could not understand your statement that
I will not be able to use Vision Assistan , why not ? This Webcam according to
CreativeLabs does support DirectShow and this is what NI asks to IMAQ USB
Driver works. If you could please make additional comments I will greatly appreciate
them.
Regards,
Guilherme |
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| alipio |
| Posted: Sun Dec 04, 2005 5:10 pm |
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Guest
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Hi Guilherme
See this link:http://forums.ni.com/ni/board/message?board.id=200&message.id=7317&view=by_threading&page=1
There have been quite a lot of discussions about the subject.
You can use most webcams under vision assistant and vision development, but there are some problem with languajes.
Hope it helps
Alipio
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| Brooks W. |
| Posted: Mon Dec 05, 2005 8:40 pm |
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Guest
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Hi Guilherme,
Since you have the NI-IMAQ USB driver, and the camera supports Direct
Show filters, then you should be able to use it with Vision
Assistant. Unfortunately, NI Application Engineers don't support
the NI-IMAQ USB driver. However, I will try to help you
troubleshoot this problem.
Have you tried acquiring images through LabVIEW using the USB driver? Does that work?
What OS are you using?
Best Regards,
Brooks W.
National Instruments |
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| Vision-USB |
| Posted: Sun Dec 11, 2005 1:40 pm |
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Guest
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Brooks,
Thanks for your pro-active attitude on helping me with my USB issues.
I believe that the underlying issue of my problem is to identify how to set-up my camera settings
(assuming that there is no language issues) once CREATIVELABS states that its WEBCAM Live !
supports Microsoft DirectShow Driver Capabilities. I am not sure if I understood your suggestion
to use LABVIEW for acquiring the images without the aid of Vision Assistant, what could be the
difference that could make one working and the other don't ?
My OS is Windows XP with SP2 ( Portuguese Version ).
Thanks,
Guilherme |
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| alipio |
| Posted: Sun Dec 11, 2005 6:10 pm |
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Guest
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Hi
You can be quite positive the problem is a language dependency one.
As I know for other posts and for my home PC, IMAQ USB from NI does not
work in xp sp2 in spanish, german... etc. It works in english
only. Fails are in vision asistant and plane vision.
Try xp sp2 englis or your native language in xp sp1.
Cheers
Alipio |
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| Vision-USB |
| Posted: Sun Dec 11, 2005 6:40 pm |
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Guest
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Alipio,
Thank you for your inputs and informations. I hope some fellow from NI (Brooks could be the one)
could do extra investigations, why Windows XP SP2 has languages issues with this NI USB driver
and with SP1 works fine, no matter language you are using ?
Brooks is this a known issue for you ?
THX !
Guilherme |
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| Brooks W. |
| Posted: Mon Dec 12, 2005 3:10 pm |
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Guest
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Hi Guilherme,
The Direct Show driver for USB
cameras returns language specific strings for certain functions. There
are some hard coded English strings used in the driver when looking for
a "Capture" pin. Apparently on non-English OS's, the driver returns the
capture pin string in the OS language, so the english string isn't
found. I don't see how this would be any different for XP SP1.
Alipio,
Have you seen the USB driver work on XP SP1 with a non-english OS?
Best Regards,
Brooks W.
National Instruments |
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| alipio |
| Posted: Mon Dec 12, 2005 6:41 pm |
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Guest
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Hi Brooks
Yes. It works in my work PC (XP pro SP1 spanish) vision assiatant and vision. Lv7.1 and 8.
It does not work in XP sp2 german or spanish. It does work in XP sp2 english.
So I am quite positive there is some language dependency in sp2 that is not compatible with Ni imaq for USB.
Actually, I will had to go back to sp1 to be able to keep using Ni Imaq for USB.
I am not the first one to detect this problem. There are posts in machine vision forum about the subjet.
Cheers
Alipio |
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| alipio |
| Posted: Tue Dec 13, 2005 6:10 pm |
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Guest
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| Vision-USB |
| Posted: Wed Dec 14, 2005 3:10 pm |
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Guest
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Brooks,
Thank you very much for your support. Although this driver is not supported
by NI engineering Staff, I am sure it will benefit a lot of Vision practioners with
small budget.
THX !
****************
Alipio,
You are really doing a very good job to our Vision Comunity , providing good NI fellows
like Brooks with good informations and feedback about your experience using NI IMAQ
USB driver.
Cheers,
Guilherme
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| Brooks W. |
| Posted: Wed Dec 14, 2005 4:40 pm |
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Hi Guilherme,
We are happy to assit our customers in any way that we can.
I have talked to R&D about this issue and they are aware of it and
are going to implement a fix. However, there is no defined
timeline as to when the fix will be issued. In the mean time the
options are:
1. Roll back to SP1
2. Go to an Italian, Japanese, French, or English OS. These languages have work with the NI-IMAQ for USB driver.
Hope this helps!
Brooks W.
National Instruments |
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| Brad |
| Posted: Wed Jan 04, 2006 3:10 pm |
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Guest
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We just put together a way to easily add support for new OSes for the USB driver. Once you have the NI-IMAQ for USB driver installed (it is recommended to use version 1.1.0 put on the web 1-4-2006), rename the ImaqDirectShowDll.dll located in your system directory (C:\windows\system32\) and replace it with the DLL that is attached. Then run a shipping example (C:\Program Files\National Instruments\LabVIEW x.x\examples\imaq\imaqUSB examples.llb) A popup dialog will appear with a string. Please send a screen shot of the first dialog box to <a href="mailto:support@ni.com" target="_blank">support@ni.com</a> with an email title of IMAQ USB Foreign OS String and what OS you are using.
You can replace the ImaqDirectShowDll.dll with the original to get back the original behavior...within a few days/weeks an updated version of the driver will be available with support for your OS.
We have also recently added the ability to set the resolution of the camera programmatically to a supported video mode of the camera without using a popup dialog box. The driver that has this feature is now available on the web. Upgrading to version 1.1.0 which has this feature should break existing code, but the IMAQ USB Init will have an additional input to allow you to specify which video you want to acquire with.
Hope this helps,
Brad
USB Foreign OS DLL.zip:
http://forums.ni.com/attachments/ni/170/159194/1/USB Foreign OS DLL.zip |
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| alipio |
| Posted: Wed Jan 04, 2006 5:40 pm |
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Guest
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Hi Brad
Once more, outstanding support from NI.
Thanks.
This things ( since IMAQ usb is not oficially supported by NI)
makes a company to be a leader and its users to be sure they will have
a true and real help and support.
Alipio |
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