Re: How do I set a coordinate system using Vision Assistant 7.0
Vision Assistant does not currently have the ability to create coordinate systems. You can either generate LabVIEW code from your Vision Assistant script and insert the coordinate system VIs, or use Vision Builder for Automated Inspection to set up a coordinate system. Best regards, Dawna P. Applications Engineer National Instruments
Re: Labview crashes because of a conflict between IMAQ and a dll
It may be that the 12C VI is not properly closing out the session, but it is impossible to know since we cannot access the dll. Can you contact the company and find out more about what their VI is doing? It may be that you just have to stick with running their VI separately. Good luck!
Re: How to set background color to black for PCI-1407 on 2nd target machine with LabVIEW 5.1
Let's try to narrow down the issue a bit. Try displaying an image from file rather than the acquired video data and see if the background color still changes. If you have not already done so, I also suggest running the executable on the development machine and on a different operating system, to possibly eliminate or confirm Windows 98 as part of the problem. Please let me know the results. Best wishes!
Re: How to set background color to black for PCI-1407 on 2nd target machine with LabVIEW 5.1
The background color of your picture should not be changing if your image environment, video monitor, etc. are the same for both systems. Do you see the problem if you use the camera from the first machine on the target machine? What if you use swap out the PCI-1407s between the two systems? Also, are you running the same version of the NI-IMAQ driver on both machines? Best regards, Dawna P. Applications Engineer National Instruments
Re: Integrate IMAQ Vision picture into frontpanel
Hi, Felix, I believe what you are asking is how to display images on a LabVIEW front panel. If you are using LabVIEW 7, there is now an embedded front panel control that you can use for image display. This control is found in the following location on the Controls Palette: Controls >> Vision >> Image Display. If you are using a previous version of LabVIEW but you have IMAQ Vision (which it sounds like you do), you can display the image in a WindDraw window. Here is an example that demonstrates the use of the WindDraw window: http://sine.ni.com/apps/we/niepd_web_display.display_epd4?p_guid=B45EACE3DB9156A4E034080020E74861&p_node=DZ52490&p_source=External";>Developer Zone Example: High-level Grab in IMAQ Vision Display I hope this helps! Best wishes with your application. Best regards, Dawna P. Applications Engineer National Instruments
Re: Vision Builder 7.0(IMAQ) : Using fxs in subVIs with references to image control
Typically you would update an Image Display control from a subVI using the Value property nodes. However, this method does not currently work with LabVIEW 7 and Vision 7, but the issue will be resolved in the next release of LabVIEW and Vision. In the meantime, in addition to the solution you found you could also use a global variable to pass images from one VI to another. Using a global variable works, but not in the same way as a reference or property node would. With a reference or property node, you can pass a reference of the control to a subVI and have the subVI update the control's image. Using global variables, the subVI will update the global variable with the new images, but you need a loop monitoring the global variable in your top level VI. I hope this helps! Best wishes. Regards, Dawna P. Applications Engineer National Instruments
Re: LabVIEW 7 USB Camera
Actually, you will need a USB driver for the camera. There are several third party organizations which make such drivers. For example, Inventeering.com has an ActiveX Control that interfaces to USB Cameras, as well as LabVIEW examples. You might also check out http://www.geocities.com/irene_he/IVision.html or Peter Parente's webcam drivers (www.mindofpete.org). For more information, you may want to post this question on the Vision discussion forum. Here's an example of a thread from that forum on USB cameras: http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RNAME=ViewQuestion&HOID=50650008009B7E&ECategory=Vision I hope this helps! Best regards, Dawna P. Applications Engineer National Instruments
