Taking a picture in LabVIEW with USB camera

Hello:
I am trying to find a way to use a Logitech USB camera (or potentially a different USB camera - perhaps a more expensive Edmund Optics camera) to snap a picture in LabVIEW. I have NI Vision software installed as well as the IMAQ USB extension for Vision, but I'm not sure where to go from here. All I need to be able to do is to snap a photo within LabVIEW and have LabVIEW save it onto the hard drive. Any help would be greatly appreciated.
Thanks,
Brad

Hi Brad,
Some of the information in the thread linked above may be out of date.
Check out this article [Acquiring Images in LabVIEW Using a USB or an IEEE1394 (FireWire) Camera] for some advice on how to snap your pictures. If you already have the NI-IMAQdx drivers, you should be able to use these for acquisition (as long as the USB camera is DirectShow compliant).
If you do not have the NI-IMAQdx drivers, but you do have the Vision Development Module you will be able to download the Vision Acquisition Software which includes these drivers. The vision acquisition software can be found here: http://www.ni.com/nisearch/app/main/p/bot/no/ap/tech/lang/en/pg/1/sn/catnav:du,n8:13.79.7820,ssnav:s...
I hope this helps!
Matt
Matt
Product Owner - NI Community
National Instruments

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Continuing import problem with USB cameras.

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Hmmm... I think there might be some sort of bug with the app regarding USB port connections. iMovie wouldn't even launch for me until I disconnected my 2 external drives. However, it seems that when I mount the external HD that's connected via firewire, iMovie is able to launch. But when it's the other external drive that's connected via USB that's mounted, that's when iMovie won't even open... And the weirdest thing is that, when the external HD that's mounted via USB is connected, just as you think the app has launched correctly, it sort of brings up an error message box that I can't even read for it just crashes immediately...

LabVIEW 7 USB Camera

Has anyone tried to use the new USB functions in LabVIEW 7 to capture an image from a USB camera?

Hey JVS,
You can try and use the NI-IMAQ for USB Cameras driver to bring the images in, but this driver requires that the USB image device have DirectShow support.
If this does not work for you, then the hardware that you would like to use has to have some form of API that LabVIEW can communicate with. If it does, then you can just use a call library function node to call into the Pinacle software for it to return images to LabVIEW. Or you can try to use ActiveX to bring in the images. Last, you could check with the hardware manufacturer to see if they have any LabVIEW support or VI's that will allow their hardware to work with LV.
If the above doesn't work for you, then you might have to save the images to disk and then use the Vision Software to open the images from the files. Or you could display them by using native LabVIEW functions.
I hope this helps. Please let us know what your final solution is, so that others who would like to interact the same hardware with LabVIEW will be able to find a solution easily. Also, let me know if you have any further questions or concerns. Thanks, and have a great day.
Regards,
DJ L.

IMAQdx change fps adquiring with USB camera

Hello,
Im working with Labview to process images captured with an USB camera. I would like to know how to change the adquiring conditions of the camera, in special the frame rate per second (fps), the video mode and the resolution. I need to change this parameters in real time, while the program is running.
Thank you.
Solved!
Go to Solution.

Hello again!
I have yet not found a single camera where the frame rate was not changable. Maybe you need to change the video mode.
I have created some snippets for you to play with (attached). Drag and drop the images to a vi block diagram to copy the code (You might have to save the images to disk first).
Best regards
Attachments:
Get camera attributes types and values.png ‏54 KB
Set camera VideoMode.png ‏66 KB

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Hi, I am new to LabView and was wondering how I can acquire and display a video directly from USB camera in the front panel. Thanks for any help.

Welcome to the LabVIEW community!
The KnowledgeBase below discusses the issues of interfacing a USB camera with a LabVIEW application.
Acquiring Images in LabVIEW using a USB Camera
Please let us know if you have any questions.
Regards,
Matt F
Keep up to date on the latest PXI news at twitter.com/pxi

Interface LabView with IP camera which supports MPEG4

Hi,I would like to know is there anyway in which LabView can interface with an IP camera that only supports MPEG4?
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Hello
Even i am unable to interface my android smartphone camera with labview even when i used IP Webcam and droidcam.
Although it has been interfaced as it shows my cam in MAX but it doesnt show the camera in the program i made for video acquisition.
the same program works well for my laptop camera.
I am attaching the screenshots as well.
Hope u help me out with.
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Attachments:
Capture1.JPG ‏30 KB
Capture2.JPG ‏43 KB
MAX 1.JPG ‏119 KB

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it always have error code in the step to open camera.
Anyone ever try this camera before and would appreciated if someone provide solution.

You misposted to the Digital I/O board. You can click on Options and request the moderator to move it. The Machine Vision board would be more appropriate.

MAX cannot find two usb cameras at same time

Hi,
I want to use two usb cameras (Thorlabs DCC 1545M) in NI-IMAQdx in Labview, but it can only find one camera (the one plugged in earlier), and also only one camera is shown in MAX. Both cameras works in the software from the manufacturer, and if I unplug the 1st camera, the 2nd will show up in MAX after a refresh.
I found online that up to one camera is supported for each USB hub in Labview, and all USB ports in this computer are corresponding to a same hub. I don't know if this is causing the problem.
Actually I don't need to take picture in both cameras at the same time, a programmed switch between the two cameras will work for me.
Any suggestion and comment will be appreciated.
Solved!
Go to Solution.

Hello JYang,
According to this link, you can acquire from multiple USB cameras simultaneously. The limitation is on the manufacturer and how they interface with the DirectShow bus. When you are using two cameras of the same make and model, it is sometimes the case that not enough information is present for IMAQdx to distinguish between the two cameras. When you switch the cameras in MAX, do they come in as different cameras, or do they show up virtually the same?
Since you said switching between them would work, I found an example that does just that. Just make sure to give each camera a unique camera name. Hopefully this will be useful for you.
Also, there is quite a bit of discussion on this topic available on the discussion forum already. Check out these related threads, or use the Search box to search for more. There is quite a lot of information available!
http://forums.ni.com/t5/LabVIEW/multiple-USB-cameras-in-Labview/m-p/833517
http://forums.ni.com/t5/Machine-Vision/two-USB-camera-identification/m-p/2193960
http://forums.ni.com/t5/Machine-Vision/Synchronized-capture-for-multiple-USB-cameras/td-p/1879647
http://forums.ni.com/t5/LabVIEW/Multiple-USB-Camera-Image-Acquisition-using-Vision-Acquisition/td-p/...
Patrick
CLA

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Hey Mike,
Indded I understand the underexposure and I have been taking pictures since 2010 with this Camera, no problems. I used the stock settings and after doing my course, i understtod the aperture, shutter speed and ISo, however I just dont understand how I can pickup my camera and it stop taking Pictures.
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So i tried shooting on Program mode and its working perfect, I come to the conclusion that my manual mode is screwed up. I did however had my brother use my camera a day but i was present, now i have to backtrack and see what he did in Maunal mode. Thank very much for helpingme out,
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However what are the basic settings I should in manual mode?

How can I delete pictures imported on my ipad from my camera with usb jack ?, How can I delete pictures imported on my ipad from my camera with usb jack ?

How can I delete pictures imported on my ipad from my camera with usb jack ?, How can I delete pictures imported on my ipad from my camera with usb jack ?
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Thanks

The links below have instructions for deleting photos.
iOS and iPod: Syncing photos using iTunes
http://support.apple.com/kb/HT4236
iPad Tip: How to Delete Photos from Your iPad in the Photos App
http://ipadacademy.com/2011/08/ipad-tip-how-to-delete-photos-from-your-ipad-in-t he-photos-app
Another Way to Quickly Delete Photos from Your iPad (Mac Only)
http://ipadacademy.com/2011/09/another-way-to-quickly-delete-photos-from-your-ip ad-mac-only
How to Delete Photos from iPad
http://www.wondershare.com/apple-idevice/how-to-delete-photos-from-ipad.html
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http://www.lifeisaprayer.com/blog/2010/how-batch-delete-photos-ipad
(With iOS 5.1, use 2 fingers)
How to Delete Photos from iCloud’s Photo Stream
http://www.cultofmac.com/124235/how-to-delete-photos-from-iclouds-photo-stream/
 Cheers, Tom

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I'm looking for an USB camera with a CMOS sensor that I can use with
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Hello,
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How can I use a USB camera with cRIO 9022. Please see my strange problem.

Hi,
I would like to use a USB camera with NI cRIO 9022. I used the same USB camera with NI USB 6216 DAQ device and developed a VI(within a PROJECT and outside it). So, It is working fine with NI USB 6216 device when I use the Vision Assistant Express VI and gets detected in its Initialization Window. Please see JPEG File 3 where I get NO ERROR.
I am facing a problem when I want to use it with NI cRIO 9022. What exactly I am doing in this case is:
1) Create a NEW PROJECT
2) Add Targets and Devices(NI cRIO 9022)
3) Use the Scan Interface mode
4) Create a NEW VI under the cRIO 9022 device
5) Use a Timed Loop(Synchronized with Scan Engine) for continuous Data Acquisition and Sending from the Analog I/O modules.
6) Use the Vision Assistant available through the NI Vision Acquisition 2010 Module(I get STUCK HERE! The Express VI opens the Initialization Window, but I don't see the USB camera like in JPEG File 3)
I am facing difficulties with this HOST COMPUTER, cRIO implementation differences. On my host computer I have the software packages as shown in JPEG File 1, and on my cRIO 9022 as shown in JPEG File 2.
Can someone guide me how to overcome this and get the USB camera detected when I am using NI cRIO 9022?
NOTE: If this is a problem with software mismatches on HOST and NI cRIO 9022 device, please see JPEG Files 1 and 2 for available software and Host and cRIO 9022.
Thanks.
Amar.
Attachments:
NI Vision Acquisition Express Error for NI cRIO 9022.JPG ‏39 KB
IMAQ and dx Modules Installed on my NI cRIO 9022 hardware(No NI Vision Acquisition 2010 SP1).JPG ‏82 KB
NI Vision Acquisition Express NO Error for NI cRIO 9022.JPG ‏48 KB

Only GigE comms are supported on the cRIO Real Time OS. Have a look at the following:
Machine Vision on NI CompactRIO and Single-Board RIO
Adnan Zafar
Certified LabVIEW Architect
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Scott Radloff wrote:
This has more to do with the camera than OS X. Some cameras use communication protocols that do not play well with the Finder. For these cameras, support is built into iPhoto.
It is also built into the included Image Capture utility, which is more flexible than iPhoto in some ways for simple downloads. You can preview and select individual pics, and set the folder where the pictures go.
Terence Devlin wrote:
Almost all Canon and some Kodak cameras refuse to mount in the File System. It’s a characteristic of the brands.
In the case of Canon it is lack of support for USB Mass Storage which almost all other brands do. But as stated it is much better and safer to use a card reader instead of the USB cable. A card reader always shows up on the desktop for drag-and-drop.

CK71 suddenly hang when taking a picture using the camera

Hi team, The customer is using the CK71 with camera option.
OS is. 1.61.22.72.
Our partner developed the camera application based on Intermec source file according to the IDL(Multimedia Resource Kit).
Regarding the source that the partner tested, I attached the zip file including the DotNetCF 3.5.
Also, I attached the CNxDShow.CAB that we have to install first for operating the camera. The symptom is... when taking the picture again and again in light environment and in dark environment by turns, suddenly CN70 hang. For restoring, we should remove the battery and install it again for rebooting.
But, the customer hates the removing and reinstalling the battery. To reproduce the symptom....
1. Copy all file under the folder "\FullSreenCameraCNx\FullSreenCameraCNx\bin\Debug" and paste them into the device.
2. Copy the CNxDShow.CAB and paste into the device.
3. Install the CNxDShow.CAB first
4. Create new folder "\My Documents\My Pictures" on the device, if the device doesn't have the name of the folder
5. Execute the FullScreenCameraCNx.exe on the device by clicking
6. Try taking a picture by pushing the enter key in light/dark environment by turns again and againIn our trouble shooting,
The application put the log file when taking a picture.
the location of the log is under the folder "Flash File Store\Log\Device_Conncet".
Normal log is...
===================================
2015-06-30 5:2:31 Camera Shot S
2015-06-30 5:2:31 Camera Shot E
2015-06-30 5:2:33 Start
2015-06-30 5:2:33 Shot Result : Ok : \My Documents\My Pictures\SnapShot-5.jpg
===================================or
===================================
2015-06-30 4:58:0 Camera Shot S
2015-06-30 4:58:0 Camera Shot E
2015-06-30 4:58:1 Start
2015-06-30 4:58:1 Snapshot failed
===================================But, Abnormal log when Device hang suddenly is ...
No "Start" or No "Snapshot failed" like the below.
===================================
2015-06-30 5:5:34 Camera Shot S
2015-06-30 5:5:34 Camera Shot E
2015-06-30 5:5:34 Camera Shot S
2015-06-30 5:5:34 Camera Shot E
2015-06-30 5:5:34 Camera Shot S
2015-06-30 5:5:34 Camera Shot E
2015-06-30 5:5:35 Camera Shot S
2015-06-30 5:5:35 Camera Shot E
===================================Please see the logfile in the 20150630.txt that I attached additionally.
The thing that we are feeling that it was strange is....
in the source, if invoked "Cam.Snapshot(CurrentResolution)", "Cam_SnapshotEvent" should be called. But, when we experienced the "Device Hang" during taking the pictures, I guess that "Cam_SnapshotEvent" were not called. I copied and pasted the some part of source that I want to highlight like the below.
============================================================//---------------------------------------------------
// make snapshot
bool AcceptingEnter = true; //for eliminating repeating enter keydown events...
void Form1_KeyDown(object sender, KeyEventArgs e)
if (e.KeyData == Keys.Enter && AcceptingEnter == true)
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void Cam_SnapshotEvent(object sender, Camera.SnapshotArgs sna)
log_Entity.write_Log(1, " Start");
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============================================================ Can anyone provide the information or solution why the CK71 suddenly hang and how to avoid the "device hang"? Best Regards,
Kim, Hyun Wook

Hello
you opened a case at our support portal. That is the right way to get support for such very specific issues.
Thanks
Josef

Taking a picture in LabVIEW with USB camera

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