Don't understand IMAQ image behavior
Hi there,
I have several image controls in my application. When I assign image A to image B (in my wiring diagram), and then close image B, image A is no longer valid! When I try to crop image A after closing image B, I get a "not an image" error. If I do not assign image A to image B, I don't get the error. If I do not close image B after assigning image A, I don't get the error.
I am new to IMAQ and don't understand this behavior at all. It looks like when I try to give the value of image A to image B, it somehow links the two rather than just copying the information over. Is this a pointer and reference vs. value assignment issue?
Regardless, these IMAQ image controls behave differently than any other control in the labview palette. I hope someone can explain what I am seeing to me so that I that I can learn when I can assign one image to another, and when I can close, and how I can avoid extremely confusing and difficult to debug results.
Thanks,
Eric
Hi,
You must create each of Image A and Image B separately using IMAQ Create and then copy content of image A to image B using IMAQ Copy.
Image Display control in Labview does not create an image and does not reserve memory for it. It just displays content of the image it is wired to. I suspect that when you "assign" image A to image B in your program, you just wire the same image to 2 Image Display controls. No wonder they show identical image. When you "close image B", you actually closing the only image you have, memory space allocated fot that image is released and reference is no longer valid. After that any attempt to modify/change that image will return "not an image" error.
I recommend you to look into Vision examples shipped with Labview - see for example "Extract Example.vi" in "C:\Program Files\National Instruments\LabVIEW 7.1\examples\Vision\2. Functions\Image Management". In the path above you should change LabVIEW 7.1 to your version of LabVIEW.
Similar Messages
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Background...
I joined the Mac bandwagon about 2 months ago. I am still getting used to it, but like it so far. Last week, I activated a new Iphone on my Imac. I needed to key in my userid and password. 3 days later, my itunes account was hacked into. My itunes information was scrambled. My itunes email, home address, and password were changed. Also, they didn't use my credit card which was attached to my account to make any purchases (they deleted my card and put someone else's card on my account to buy $100 worth of gift cards). I didn't receive any emails from Apple that my password, or email were changed, but I did get 2 receipts from the Itunes Store identifiying the purchases. Apple support fixed everything, but couldn't offer any explanation on what happened, other than to say my account was "modified". I don't like coincidences.
I freely admit that I didn't do enough to protect my login credentials as I used the same userid and password on multiple sites (since corrected). I still don't know how my account was accessed. I started to wonder if there may have been a key logger installed on my Imac without my knowing it. I am pretty careful with installing software and have purchase about 15 applications, all either from the itunes store, or from other reputable sources. I have never made any in-app purchases.
I understand that to install a key logger you would need to supply the admin password, which brings me to my question....
About 4 weeks ago, my wife was using the Imac on facebook. While she was there, the Imac experienced a hard crash. We had to do push and hold the button on the back of Imac to get it to shut down and reboot. When it came up, it required the admin password, and dropped me into a mode where it wouldn't recognize the external disk drive which was attached via USB. I needed to restart the machine and everything appeared to be normal. I assumed that this was Apples version of "safe" mode, but now I am not so sure. Could a key logger have been installed during this event? Is this expected behavior after a hard reset?
I have McAfee for Mac installed and it hasn't detected any threats, but McAfee is pretty wishy-washy on it's ability to detect key loggers. I am thinking about Macscan or Little Snitch. I would do a reinstall of the OS, if I only knew how.
Any help?your itunes accoutn have nothing to d with your computer
you can go to any computer with internet access in the world and
login into your itunes account if you have the appleID and password
the itunes account is placed on apples itunes servers -
Finder behavior I don't understand
The thing I don't understand is why Apple did this...
Usually when you copy some files from a folder to another in which are already presents some of the same files the Finder ask you if you want to ignore the duplicate ones.
Like that
You have the option for not letting doing the copy of the files already presents (non sostituire in italian)
Then while working on files something different happens.
Watch the video. Why Apple did that? It's a non-sense.
https://www.dropbox.com/s/sdmysgheg0omnj4/CopiaML.mov
The Finder copy 2 times the same files! Where is the "don't overwrite" option?So do you think this is normal?
Don't you think it was better and simple to understand in the past?
I'm an advanced user so I know how to understand how Finder works, but some many new Mac users don't.
I'm only telling that a "keep both" function is almost useless because if I select some duplicate files and also some unique ones it ends with keeping duplicates that needs time to copy and are a space waste.
This function would be fun if the Finder do an hash on those files and find that they have tha same name but not the same content.
Before that was way better, now I need to install third party softwares and for "new to mac" or "new to computer" users this is NOT so great. -
Why does moving the mouse over an IMAQ image display slow the GUI down so much?
I have a large application with several vi's running simultaneously under labview 8.6.1. When I mouse over an image display control in one of the vi's, everything slows down a shocking amount in all the other vi's. The windows task manager does not show a large increase in CPU use. My pc is has a quad cpu with 4GB of RAM, and the CPU and memory loads do not appear to be terribly taxing to the system. However, many of my vi's apparently come almost to a standstill if I just move the mouse in a circle around my image control.
This looks like it is largely a GUI display issue. If I make a new vi and put a while loop in it that only displays the iteration loop number to an indicator, I can see the iterating occurring, then stopping totally when I mouse inside the image display control. When I stop moving the mouse inside the control, or when I move it outside the control, the interation loop number jumps up, as if it had been incrementing behind the scenes the whole time. So only display of the interating was halted.
This problem occurs even if the vi with the image control is not executing. If the vi with the image control is open but not running, and I mouse over the image on it, the other guis all come to a screeching halt.
Does mousing in the image display control really utterly crush all other guis in all other labview windows? Is this an issue inherent to the image display control? If so, is there anything I can do about this?
Also, this issue is not entirely limited to display. I started looking at it in greater detail because this issue also exposed what I think is a race condition in my code. I have a vi that acquires an image from a ccd and puts it into an IMAQ image.ctl. This image then gets passed up to a vi up the call chain, and is put on a queue and sent over to be de-queued by a vi that has the image display control. Here's the kicker: when I mouse over the image display control, the image successfully gets acquired inside the subvi, and if I probe the wire leading to the output IMAQ image display.ctl, I see the image. If I simultaneously probe the wire coming out of the subvi one level up the call chain, the image gets lost about half the time. This only happens if I am mousing in the image display control IN A TOTALLY DIFFERENT AND SEPARATE VI. If I bump up the priority of the ccd image acquisition vi to 'highest priority', the problem only happens about 1% of the time, and I really have to mouse around to make it happen. Still, it's disturbing that mousing in the GUI in one window results in a failure of a separate subvi to simply pass an image up the call chain. I understand that IMAQ images are referenced rather than passed by value, but I don't see why there should be a failure to pass the image up the call chain. I've looked for a race condition, but can't find one.
EricI have finally been able to replicate the behavior that you are seeing on another computer once the image was large enough. Here are a few notes about this behavior:
First. The UI only slows down when the images are large, 16 bit images. The reason why this is unique to 16 bit images is that they can only be displayed on the front panel as 8 bit images. The workaround that Weiyuan suggested to change the 16 bit display mapping hints towards the root of the problem...that any time a mouse runs over the indicator, Windows asks the entire image to re-draw (having a separate indicator overlapping the image will create the same behavior). With a 16 bit image, not only does the image have to re-draw on the screen but the 16 bit pixels need to be mapped to 8 bits. When setting the 16 bit display mapping to Full Dynamic, this requires mor computation/pixel than 90% dynamic or one of the other mapping schemes.
This is expected behavior if your program is running and you're trying to display a large 16 bit image. To fix this behavior there are a couple options:
Change the 16 bit display mapping to something other than full dynamic. You can choose which 8 bits to display or if you want to map the bits.
Resize the image just for viewing purposes on your front panel (since you aren't going to view every single pixel of you image on the screen). You can use the IMAQ Resample.vi to do this. This will allow you to take your 1500x1500 pixel image and only display a 500x500 pixel version.
If you are interested in viewing small details of the large image, consider just displaying a smaller region of interest at a time.
Let me know if any of these solutions work for you. Good luck on your application.
Zach C.
Field Engineer
Greater Los Angeles -
Handling IMAQ Images in the TestStand Opeator Interface
I'm modifying the LabVIEW Operator Interface to display images from IMAQ VIs on the front panel. I've got it to work a number of ways, but never if I compile the interface into an executable.
I've tried using the "IMAQ Image Cluter to Image Dataype" and "IMAQ Image Datatype to Image Cluster" vi's to store and pass references to the Operator Inteface. It works in development mode but not when built. I understand this won't work as the reference is local to the adapter you are using so I abandoned that.
I've tried storing the Image into a global VI and then reading that global VI in the interface for display. I've made sure to call the Global VI dynamically in the operator interface so I'm using the same VI and not one compiled into the executable. It works in development mode but not compiled. Don't know why.
Another method I tried was to use the "Flatten To String" and "Unflatten From String" functions to store the image in a local string (as a binary string) in the sequence. I then tried accessing the local with the "ProperyObject" Method "GetValString" in the Operator Interface VI. When I try this I get an error and the development system shuts down. I know I'm access the local correctly as I have accessed other locals from the sequence in this manner.
Any ideas why one or both of the last two methods are not working for me? Is there any other methods that would work? How about sending the image to a common dll? Can you store an image or image reference in a dll so any platform could access it?
Thanks,
DaveThanks for the tip about trying another data type. I tried an numeric array and it did not work as well. But now I could see what is happening. When the GetValString reads the local it does not interpret the escape code '\'. i.e. if the string contains '\00' it ends up as '5C 30 30'. The Unflatten From String vi is expecting hex 00 and an error occures.
I wrote a crude VI to look for the escape code and convert what follows to pure hex. It first converts the string to byte array, interprets each byte, creates a new hex array then converts it back to a string. The good news is that it works for numeric arrays, and I was able to read the array values in the Operator Interface by reading the flattened data from the sequence. However, when I applied the VI to the Image Flattened data, the array was 2,295,879 elements long and my VI was way too slow to convert the whote image.
Is there a fast way of converting the string to pure hex values?
Don't know why my VI didn't show up. I'm now trying to attach an image of the block diagram.
Attachments:
FlattendImagefromSequence.jpg 46 KB -
I am trying to figure something out but can't seem to find
it. I'm sure it must be pretty simple, but I'm stumped. Basically,
I have a main image and a few thumbnail images below it. I've
attached the Swap Image behavior to each thumb to change the main
image to a different photo and then changed the onMouseOver to
onClick.
The problem is I want to also have some photo text or caption
below the main image to change. Does anyone know how to do this
with more or less stock DW behaviors? Or if not, how to do it in
the most efficient way possible?
Thanks in advance.
-BillYou could always embed the caption information in the image,
you know? That
would be the simplest way. Is that possible?
Alternatively you could create a series of stacked
containers, each hidden,
in the location where you want your captions. Then you would
make your
onclick event do both the image swap and the Show/Hide on the
associated
caption container (*and* a hide on all the rest of the
caption containers).
This can be pretty tedious when there are lots of images, and
you are using
only the DW User interface (as opposed to Code view). It will
also take you
into the realm of positioned elements (probably) which can be
troublesome
themselves.
Finally, if this is all too much for you, there are EXCELLENT
alternatives
over at projectseven ($) for doing something like this right
out of the box.
http://www.projectseven.com/
Murray --- ICQ 71997575
Adobe Community Expert
(If you *MUST* email me, don't LAUGH when you do so!)
==================
http://www.projectseven.com/go
- DW FAQs, Tutorials & Resources
http://www.dwfaq.com - DW FAQs,
Tutorials & Resources
==================
"captcashew" <[email protected]> wrote in
message
news:[email protected]...
>I am trying to figure something out but can't seem to
find it. I'm sure it
>must
> be pretty simple, but I'm stumped. Basically, I have a
main image and a
> few
> thumbnail images below it. I've attached the Swap Image
behavior to each
> thumb
> to change the main image to a different photo and then
changed the
> onMouseOver
> to onClick.
>
> The problem is I want to also have some photo text or
caption below the
> main
> image to change. Does anyone know how to do this with
more or less stock
> DW
> behaviors? Or if not, how to do it in the most efficient
way possible?
>
> Thanks in advance.
>
> -Bill
>
> <p><img src="images/215-suite-2.jpg" alt="Main
Photo" name="mainImage"
> width="300" height="225" id="mainImage" /></p>
> <p> </p>
> <p> </p>
> <p><img src="images/215-suite-2.jpg"
alt="Thumbnail Photo 1"
> name="thumb1"
> width="100" height="75" id="thumb1"
>
onclick="MM_swapImage('mainImage','','images/215-suite-2.jpg',1)"
/>
> <img src="images/renovations_02-after.jpg"
alt="Thumbnail Photo 2"
> name="thumb2" width="100" height="75" id="thumb2"
>
onclick="MM_swapImage('mainImage','','images/renovations_02-after.jpg',1)"
> />
> <img src="images/renovations_03-after.jpg"
alt="Thumbnail Photo 3"
> name="thumb3" width="100" height="75" id="thumb3"
>
onclick="MM_swapImage('mainImage','','images/renovations_03-after.jpg',1)"
> /></p>
> -
What datatype should i use to store imaq image in sql database?
Hi there i am thinking of saving the imaq image into database for retrieval in my website so that it's like a stream but i don't like what datatype does labview store the image as.
You have two options for storing images in a relational database:
A. Don't put it in a database. Store it as a file, and store the pointer int he DB (as mentioned above).
B. Store it as a blob datatype. See here for more info. -
I just updated my Macbook (2010) to Yosemite, and it's become very slow. After searching through this community, I downloaded and run EtreCheck, but don't understand what the report means. Please could you help me with what I should do to improve my computer's speed, aside from upgrading my RAM? Thank you so much.
The report:
Problem description:
my macbook is running very slowly after upgrading to yosemite.
EtreCheck version: 2.0.11 (98)
Report generated 12 November 2014 1:44:14 pm SGT
Hardware Information: ℹ️
MacBook (13-inch, Mid 2010) (Verified)
MacBook - model: MacBook7,1
1 2.4 GHz Intel Core 2 Duo CPU: 2-core
2 GB RAM Upgradeable
BANK 0/DIMM0
1 GB DDR3 1067 MHz ok
BANK 1/DIMM0
1 GB DDR3 1067 MHz ok
Bluetooth: Old - Handoff/Airdrop2 not supported
Wireless: en1: 802.11 a/b/g/n
Video Information: ℹ️
NVIDIA GeForce 320M - VRAM: 256 MB
Color LCD 1280 x 800
System Software: ℹ️
OS X 10.10 (14A389) - Uptime: 3:23:3
Disk Information: ℹ️
TOSHIBA MK2555GSXF disk0 : (250.06 GB)
S.M.A.R.T. Status: Verified
EFI (disk0s1) <not mounted> : 210 MB
Macintosh HD (disk0s2) / [Startup]: 249.20 GB (25.42 GB free)
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
HL-DT-ST DVDRW GS23N
USB Information: ℹ️
Western Digital My Passport 0748 1 TB
S.M.A.R.T. Status: Verified
EFI (disk1s1) <not mounted> : 210 MB
tansey (disk1s2) /Volumes/tansey : 999.83 GB (951.98 GB free)
Apple Inc. Built-in iSight
Apple Inc. BRCM2070 Hub
Apple Inc. Bluetooth USB Host Controller
Apple Inc. Apple Internal Keyboard / Trackpad
Configuration files: ℹ️
/etc/hosts - Count: 15
Gatekeeper: ℹ️
Mac App Store and identified developers
Kernel Extensions: ℹ️
/System/Library/Extensions
[not loaded] com.NovatelWireless.driver.NovatelWirelessUSBCDCECMControl (3.0.13) Support
[not loaded] com.NovatelWireless.driver.NovatelWirelessUSBCDCECMData (3.0.13) Support
[not loaded] com.ZTE.driver.ZTEUSBCDCACMData (1.3.8) Support
[not loaded] com.ZTE.driver.ZTEUSBMassStorageFilter (1.3.8) Support
[not loaded] com.novamedia.driver.IceraUSB_MSD_Bypass (1.3.0) Support
[not loaded] com.novatelwireless.driver.3G (3.0.13) Support
[not loaded] com.novatelwireless.driver.DisableAutoInstall (3.0.13) Support
[not loaded] com.option.driver.Option72 (2.15.0) Support
[not loaded] com.option.driver.OptionHS (3.26.0) Support
[not loaded] com.option.driver.OptionMSD (1.21.0) Support
[not loaded] com.option.driver.OptionQC (1.11.0) Support
[not loaded] com.rim.driver.BlackBerryUSBDriverInt (0.0.39) Support
[not loaded] com.rim.driver.BlackBerryUSBDriverVSP (0.0.45) Support
[not loaded] com.vodafone.driver (3.0.9) Support
[not loaded] com.zte.driver.cdc_ecm_qmi (1.0.1) Support
[not loaded] com.zte.driver.cdc_usb_bus (1.0.1) Support
[not loaded] de.novamedia.driver.NMSamsung (0.0.2) Support
[not loaded] de.novamedia.driver.NMSmartplugSCSIDevice (1.0.1) Support
[not loaded] de.novamedia.oem.vodafone.vtp.huawei.cdc (0.0.2) Support
/System/Library/Extensions/NMHuaweiPhonesVTPCDC_106.kext/Contents/PlugIns
[not loaded] de.novamedia.driver.NMUSBCDCACMControl (3.2.12) Support
/System/Library/Extensions/NMSamsungDriver_106.kext/Contents/PlugIns
[not loaded] de.novamedia.driver.NMUSBCDCACMData (3.2.12) Support
/System/Library/Extensions/NovatelWireless3G.kext/Contents/PlugIns
[not loaded] com.novatelwireless.driver.3GData (3.0.13) Support
/System/Library/Extensions/Vodafone.kext/Contents/PlugIns
[not loaded] com.vodafone.driver.Data (3.0.9) Support
Startup Items: ℹ️
HP IO: Path: /Library/StartupItems/HP IO
HWNetMgr: Path: /Library/StartupItems/HWNetMgr
HWPortDetect: Path: /Library/StartupItems/HWPortDetect
Startup items are obsolete and will not work in future versions of OS X
Problem System Launch Agents: ℹ️
[failed] com.apple.accountsd.plist
[failed] com.apple.AirPlayUIAgent.plist
[failed] com.apple.bird.plist
[failed] com.apple.CallHistoryPluginHelper.plist
[failed] com.apple.CallHistorySyncHelper.plist
[failed] com.apple.cloudd.plist
[failed] com.apple.coreservices.appleid.authentication.plist
[failed] com.apple.coreservices.uiagent.plist
[failed] com.apple.EscrowSecurityAlert.plist
[failed] com.apple.icloud.fmfd.plist
[failed] com.apple.iconservices.iconservicesagent.plist
[failed] com.apple.nsurlsessiond.plist
[failed] com.apple.pluginkit.pkd.plist
[failed] com.apple.recentsd.plist
[failed] com.apple.security.cloudkeychainproxy.plist
[failed] com.apple.spindump_agent.plist
[failed] com.apple.telephonyutilities.callservicesd.plist
Problem System Launch Daemons: ℹ️
[failed] com.apple.awdd.plist
[failed] com.apple.cache_delete.plist
[failed] com.apple.coresymbolicationd.plist
[failed] com.apple.ctkd.plist
[failed] com.apple.diagnosticd.plist
[failed] com.apple.iconservices.iconservicesagent.plist
[failed] com.apple.iconservices.iconservicesd.plist
[failed] com.apple.ifdreader.plist
[failed] com.apple.installd.plist
[failed] com.apple.MobileFileIntegrity.plist
[failed] com.apple.nehelper.plist
[failed] com.apple.nsurlsessiond.plist
[failed] com.apple.sandboxd.plist
[failed] com.apple.softwareupdated.plist
[failed] com.apple.spindump.plist
[failed] com.apple.sysmond.plist
[failed] com.apple.tccd.system.plist
[failed] com.apple.wdhelper.plist
[failed] com.apple.xpc.smd.plist
[running] de.novamedia.nmnetmgrd.plist Support
Launch Agents: ℹ️
[not loaded] com.adobe.AAM.Updater-1.0.plist Support
[failed] com.adobe.CS5ServiceManager.plist Support
[loaded] com.google.keystone.agent.plist Support
[running] de.novamedia.VodafoneDeviceObserver.plist Support
[invalid?] SwapperUFi.plist Support
Launch Daemons: ℹ️
[loaded] com.adobe.fpsaud.plist Support
[invalid?] com.adobe.SwitchBoard.plist Support
[loaded] com.cloudpath.maccmd.plist Support
[loaded] com.google.keystone.daemon.plist Support
[loaded] com.microsoft.office.licensing.helper.plist Support
[invalid?] PPPMonitord.plist Support
User Launch Agents: ℹ️
[loaded] com.adobe.ARM.[...].plist Support
[invalid?] com.akamai.client.plist Support
[invalid?] com.divx.agent.postinstall.plist Support
[failed] com.facebook.videochat.[redacted].plist Support
User Login Items: ℹ️
Dropbox Application (/Applications/Dropbox.app)
SurplusMeterAgent UNKNOWN (missing value)
Google Chrome ApplicationHidden (/Applications/Google Chrome.app)
HP Scheduler Application (/Library/Application Support/Hewlett-Packard/Software Update/HP Scheduler.app)
Internet Plug-ins: ℹ️
o1dbrowserplugin: Version: 5.38.6.0 - SDK 10.8 Support
Google Earth Web Plug-in: Version: 7.1 Support
Default Browser: Version: 600 - SDK 10.10
OfficeLiveBrowserPlugin: Version: 12.2.6 Support
OVSHelper: Version: 1.1 Support
AdobePDFViewerNPAPI: Version: 10.1.12 Support
FlashPlayer-10.6: Version: 15.0.0.152 - SDK 10.6 Support
Silverlight: Version: 5.1.10411.0 - SDK 10.6 Support
Flash Player: Version: 15.0.0.152 - SDK 10.6 Mismatch! Adobe recommends 15.0.0.223
iPhotoPhotocast: Version: 7.0
googletalkbrowserplugin: Version: 5.38.6.0 - SDK 10.8 Support
QuickTime Plugin: Version: 7.7.3
AdobePDFViewer: Version: 10.1.12 Support
SharePointBrowserPlugin: Version: 14.0.0 Support
JavaAppletPlugin: Version: 15.0.0 - SDK 10.10 Check version
User Internet Plug-ins: ℹ️
OctoshapeWeb: Version: 1.0 Support
Safari Extensions: ℹ️
DivX Plus Web Player HTML5 <video>
3rd Party Preference Panes: ℹ️
DivX Support
Flash Player Support
Time Machine: ℹ️
Skip System Files: NO
Auto backup: NO - Auto backup turned off
Volumes being backed up:
Macintosh HD: Disk size: 249.20 GB Disk used: 223.78 GB
Destinations:
Time Machine Backups [Local]
Total size: 0 B
Total number of backups: 0
Oldest backup: -
Last backup: -
Size of backup disk: Too small
Backup size 0 B < (Disk used 223.78 GB X 3)
Top Processes by CPU: ℹ️
15% WindowServer
1% Dropbox
0% AppleSpell
0% Skype
0% imagent
Top Processes by Memory: ℹ️
60 MB Google Chrome
56 MB JavaApplicationStub
47 MB Skype
45 MB Finder
45 MB WindowServer
Virtual Memory Information: ℹ️
60 MB Free RAM
443 MB Active RAM
398 MB Inactive RAM
349 MB Wired RAM
16.91 GB Page-ins
633 MB Page-outsI advise to reply to the one you want to reply to.
You have had good information here. I will not repeat that here.
I would like to add:
you have incompatible software: start in SafeMode, read Woodmeister and see if it is free of issues.
Akamai is crap software needed or not, Huawei the same.
It is very possible that the keygenerator you used for generating a key for some softwares has infected your mac.
The non-regular software with the false key(s) are not compatible probably or generate malware. Luckily you can not update them automatically because the keygenerator blocked the software for contacting the developer... I propose to consider getting rid of those softwares by really good uninstalling.
You have a beautiful mac, don't degenerate it with crapped software. There are alternatives for expensive software, for example Adobe Photoshop has a free alternative (with a less beautiful interface) in GIMP. And so on.
Lex -
IMAQ image out- what's the best way?
Hello forum,
I'm developing an interface to acquire a square image from an NI-DAQmx PCI 6221 on LabVIEW 7.0 and Windows XP. At present I am simply collecting my information from a physical sine wave generator on the bench, but eventually this will be used to process images from a CARS microscope.
My problem is that I am trying to figure out a user-friendly way of "buffering" all previously acquired images in the session, and then choosing one several of them to save as an uncompressed BMP. At the moment I am using two image displays; one for the whole image overview (picture indicator) and one to pan around and zoom on fine details (IMAQ image indicator). The IMAQ image indicator is also outputting to an IMAQ browser window, which I have modified based on the Browser Example.vi which ships with LV. However, there are several difficulties with this method.
Firstly, I'm not sure how to select an indexed image from the browser itself to save; the only way I can think of would end up wiring the IMAQ image out to the BMP writing VI, but that would only save the current image, and not necessarily the one the user wants.
Secondly, I haven't quite got the hang of combining case structures, event structures and while loops yet, so there's a very specific order things have to be done in or the program hangs, (e.g.. you must press the buttons: Acquisition - Unlock Browser - Stop in that order, nothing else works properly), and I'm pretty sure I've set the browser up wrong because every time I finish with the acquisition window, an error message appears.
Thirdly, it would be nice if I could hide the browser window until I've finished with the other window, but I can't seem to get IMAQ windshow to do that. I have boolean constants wired to Hide/Show and Set/Get but no matter what combination of false and true I use, the window appears anyway.
I will attach the VI and subVIs to this post in a zipped folder, and would appreciate any help you could give me. General constructive criticism on my wiring, methods, Rude Goldbergs, etc, would also be appreciated if anyone has the time, as I'm still pretty new to LabVIEW.
Thanks in advance!
LabVIEW 2013, Windows 7
He who asks the question is a fool for five minutes; he who does not ask the question remains a fool forever.
Attachments:
Image Acquisition VI 0.4.zip 187 KBDH is right about the difficulty in removing wind noise, but hoping it might prove useful, here is a hint I copied from a thread somewhere in this discussion list.
How to export audio from Final Cut Express to (free) Audacity and back again after noise removal.
1) download Audacity
2) in fce timeline, place in and out points at beginning and end of audio
3) select that audio clip, and that clip only
4)file-export-using quicktime conversion, in the pop-up box format as aiff, 44.1kwh 16bit stereo
5)open audacity, make sure box in bottom left corner says 44100
6)file-import-audio
7)go to file and select it, click choose
8) select part of audio with just wind noise, then go to effects noise removal, click get noise profile etc.
9)when satisfied, click file-export, click ok, close audacity
10)Open fce, drag your audio clip to the right hand end of clip. Move playhead to the in marking. Go to File-import
select your audio file, choose.
11) file appears in fce browser. Drag from there to overwrite and the audio goes into the track, perfectly synced
My apologies to whoever posted this hint, I tried to find the name to give credit. This really does work to get rid of room hum, but wind noise is a really different beast and this may not help. I suspect, as DH says, it will remove too much of the audio you want to keep. Hugh -
I don't understand why iPhoto recognize the pictrures in the videocamera and iMovie doesn't recognize the videos and the videocamera.
I see all the pictures taken in iPhoto but I can't see any video in iMovie because I don't see the videocamera in iMovie.
I did the same operation several times in the past and always worked it out, with USB connection, I've tryed to restart the computer, to turn on and off the camera, to change cable, to change MAC: always the same problem!
Please is anybody so kind to help me ? Thank you!hi dlpmaster!
So, when it updates the program is working but then it sort of freezes. Then unfreezes and then again..
hmmm. what antivirus applications are you using?
as an experiment, does the freezing behavior still occur if you disable the antivirus prior to plugging your ipod in?
love, b -
From what I understand RAW photos are supposed to open in raw in photoshop CC. I don't understand why my RAW photos don't open in RAW in photoshop CC or Lightroom 5
Has the behavior changed compared to how it used to open ? If so, do you refer to the Camera RAW window similar to this: http://screenshots.en.sftcdn.net/en/scrn/78000/78026/adobe-camera-raw-22.jpg
What is the file extension of your photos ?
In Lightroom, there is no special way of opening a RAW file vs. JPEG. They all open the same. What is the Lightroom behavior ? Can you post a screenshot ? -
Flickering problem with live viewing with IMAQ Image Display
Hi everyone,
I am trying to write a program to do live imaging with Andor camera. I am using some examples from Andor. The images are acquired in sequence and send into IMAQ Image Display and also Intensity Graph. There is minimal flickering issue in the Intensity Graph but there is very bad flickering problem in IMAQ Image Display. Perhaps I misunderstand how to optimize the vision tools. Does anyone know how to overcome this issue? I have attached the code that I am testing. Thanks in advance.
Best regards,
Han Yen
Solved!
Go to Solution.
Attachments:
iXonRTA_live_0.0.1.vi 70 KBYou can use Vision Assistant to test our vision functions. Vision Assistant is really meant to prototype - it does not have all teh functionality of Vision Development Module and is not as flexible as we don't allow you access to all the settings for every function.
I recommend starting in Vision Assistant and then porting over to LabVIEW or C (whatever you are most comfortable with)...this is built-in functionality. There is nothing wrong with using Vision Assistant to do live imaging, just that you run into limitations and you will only be able to use this code on computers that have Vision Assistant.
Hope this helps.
--Michelle
Instrument Control R&D
National Instruments
Instrument Control
Machine Vision -
I don't have IMAQ vision, where can I get some super basic easy VI's for IMAQ?
Hello,
I don't have IMAQ vision, where can I get some super basic easy VI's to get images from my IMAQ PCI-1424 board, without Vision?? is there some kind of tutorial that will help me get started from the ground up in designing VI's? Also I am trying to run the HL Snap in picture control.vi and I keep getting an error that says:
-1074397150 occured at IMAQ snap.vi
Possible reasons,
NI-IMAQ (Hex 0xBFF6022) wait timed out; aquisition not complete.
Why am I getting this??? it is driving me nuts, I don't know how to get a image on my computer from the IMAQ board. I can get one in MAX. Also in MAX I try to change the camera driver to Kodak because that is the boar
d that I have KLI-2113, but when I try to change anything under properties like the window size and then apply it, it says error removing old camera. why does that do that? Some of the other drivers sort of work and let me change the settings. I don't know if they work right though. I can get atleast some response to light from the CCD chip.
Anyways, thanks,
BrianBrian;
There is an example on how to display images in LabVIEW without having the full IMAQ application.
You can always convert the images to bitmaps (flattening) and display them in a picture indicator. If you are going to do some image processing within LabVIEW, this may be the way to go.
About the error you are getting, hopefully the above example will help you in resolving the issue. If the problem persist, it will be more beneficial if you can post the code. Also, you may get better answers if you post your question in the Vision forum.
Regards;
Enrique
www.vartortech.com -
Don't understand the java.lang.OutOfMemoryError
Hi there,
I try to create an 'About' frame for a small programm I created and I get an java.lang.OutOfMemoryError which I don't understand. Can somebody help?
Here is my code:
* TabbedPaneDemo.java is a 1.4 example that requires one additional file:
* images/middle.gif.
import javax.swing.JTabbedPane;
import javax.swing.ImageIcon;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JFrame;
import javax.swing.JComponent;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.KeyEvent;
import java.awt.Dimension;
import java.awt.Rectangle;
public class TabbedAbout extends JPanel {
JLabel label=new JLabel("PRODUCT INFORMATION ");
JLabel pv=new JLabel("Product version:");
JLabel pvR=new JLabel("1.0");
JLabel javav=new JLabel("Java Version:");
JLabel javavR=new JLabel("1.4.2");
JLabel sqlv=new JLabel("PostgreSQL Version:");
JLabel sqlvR=new JLabel("8.1");
JLabel pt=new JLabel("Programming Team:");
JLabel onoma1=new JLabel("Gkisis Traianos");
JLabel onoma2=new JLabel("Zafeiropoulos Ioannis");
JLabel onoma3=new JLabel("Supervisor Teacher:");
JLabel onoma3R=new JLabel("Stamatis Dimosthenis");
JLabel alr=new JLabel("Product developed as dissertation for the ATEI");
JLabel alr2=new JLabel("Thessaloniki on autumn 2006.");
JLabel alr1=new JLabel("All rights reserved");
ImageIcon icon = createImageIcon("images/folder_sticky.gif");
ImageIcon icon2 = createImageIcon("images/tick.gif");
public TabbedAbout() {
JLabel panel1 = new JLabel();
JFrame frame = new JFrame("About");
JFrame.setDefaultLookAndFeelDecorated(true);
frame.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);
//super(new GridLayout(1, 1));
JTabbedPane tabbedPane = new JTabbedPane();
panel1.setIcon(new ImageIcon("images/TakeANoteProgress.jpg"));
tabbedPane.addTab("About", icon, panel1);
tabbedPane.setMnemonicAt(0, KeyEvent.VK_1);
JPanel panel2 = new JPanel();
//JFrame frame2 = new JFrame();
panel2.setLayout(null);
label.setIcon(icon2);
label.setBounds(new Rectangle(20, 20, 200, 25));
pv.setBounds(new Rectangle(20, 40, 175, 45));
pvR.setBounds(new Rectangle(180, 40, 175, 45));
javav.setBounds(new Rectangle(20, 60, 175, 45));
javavR.setBounds(new Rectangle(180, 60, 175, 45));
sqlv.setBounds(new Rectangle(20, 80, 175, 45));
sqlvR.setBounds(new Rectangle(180, 80, 175, 45));
pt.setBounds(new Rectangle(20, 100, 175, 45));
onoma1.setBounds(new Rectangle(180, 100, 175, 45));
onoma2.setBounds(new Rectangle(180, 120, 175, 45));
onoma3.setBounds(new Rectangle(20, 140, 175, 45));
onoma3R.setBounds(new Rectangle(180, 140, 175, 45));
alr.setBounds(new Rectangle(20, 190, 500, 45));
alr2.setBounds(new Rectangle(20, 210, 500, 45));
alr1.setBounds(new Rectangle(20, 250, 500, 45));
panel2.add(label);
panel2.add(pv);
panel2.add(pvR);
panel2.add(javav);
panel2.add(javavR);
panel2.add(sqlv);
panel2.add(sqlvR);
panel2.add(pt);
panel2.add(onoma1);
panel2.add(onoma2);
panel2.add(onoma3);
panel2.add(onoma3R);
panel2.add(alr);
panel2.add(alr2);
panel2.add(alr1);
tabbedPane.addTab("Detail", icon, panel2);
tabbedPane.setMnemonicAt(1, KeyEvent.VK_2);
tabbedPane.setSize(new Dimension(400, 300));
//Add the tabbed pane to this panel.
add(tabbedPane);
//Uncomment the following line to use scrolling tabs.
//tabbedPane.setTabLayoutPolicy(JTabbedPane.SCROLL_TAB_LAYOUT);
//Create and set up the content pane.
JComponent newContentPane = new TabbedAbout();
newContentPane.setOpaque(true); //content panes must be opaque
frame.getContentPane().add(new TabbedAbout(),
BorderLayout.CENTER);
//Display the window.
frame.setLocationRelativeTo(super.getComponent(0));
frame.pack();
frame.setResizable(false);
frame.setVisible(true);
protected JComponent makeTextPanel(String text) {
JPanel panel = new JPanel(false);
JLabel filler = new JLabel(text);
filler.setHorizontalAlignment(JLabel.CENTER);
//panel.setLayout(new GridLayout(1, 1));
panel.add(filler);
return panel;
/** Returns an ImageIcon, or null if the path was invalid. */
protected static ImageIcon createImageIcon(String path) {
java.net.URL imgURL = TabbedAbout.class.getResource(path);
if (imgURL != null) {
return new ImageIcon(imgURL);
} else {
System.err.println("Couldn't find file: " + path);
return null;
* Create the GUI and show it. For thread safety,
* this method should be invoked from the
* event-dispatching thread.
// private static void createAndShowGUI() {
//Make sure we have nice window decorations.
//Create and set up the window.
public static void main(String[] args) {
// //Schedule a job for the event-dispatching thread:
// //creating and showing this application's GUI.
//javax.swing.SwingUtilities.invokeLater(new Runnable() {
// public void run() {
TabbedAbout a=new TabbedAbout();
}Thanks in advanceI will try your suggestions. But still I don't understand. It was running independently very ok and it was what I wanted. It was built excatly as the example in
With run and main etc etc. But when I put it in my rest program it started and stack overflow error. Then I tried to change, change, change and got this last form.
This is what I had before but didn't work with my rest program.
* TabbedPaneDemo.java is a 1.4 example that requires one additional file:
* images/middle.gif.
import javax.swing.JTabbedPane;
import javax.swing.ImageIcon;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JFrame;
import javax.swing.JComponent;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.KeyEvent;
import java.awt.Dimension;
import java.awt.Rectangle;
public class TabbedAbout extends JPanel {
JLabel label=new JLabel("PRODUCT INFORMATION ");
JLabel pv=new JLabel("Product version:");
JLabel pvR=new JLabel("1.0");
JLabel javav=new JLabel("Java Version:");
JLabel javavR=new JLabel("1.4.2");
JLabel sqlv=new JLabel("PostgreSQL Version:");
JLabel sqlvR=new JLabel("8.1");
JLabel pt=new JLabel("Programming Team:");
JLabel onoma1=new JLabel("Gkisis Traianos");
JLabel onoma2=new JLabel("Zafeiropoulos Ioannis");
JLabel onoma3=new JLabel("Supervisor Teacher:");
JLabel onoma3R=new JLabel("Dimosthenis Stamatis");
JLabel alr=new JLabel("Product developed as dissertation for the ATEI Thessaloniki on autumn 2006.");
JLabel alr1=new JLabel("All rights reserved");
public TabbedAbout() {
//super(new GridLayout(1, 1));
JTabbedPane tabbedPane = new JTabbedPane();
ImageIcon icon = createImageIcon("images/folder_sticky.gif");
JLabel panel1 = new JLabel();
panel1.setIcon(new ImageIcon("images/TakeANote.jpg"));
tabbedPane.addTab("About", icon, panel1);
tabbedPane.setMnemonicAt(0, KeyEvent.VK_1);
JPanel panel2 = new JPanel();
JFrame frame = new JFrame();
panel2.setLayout(null);
label.setBounds(new Rectangle(170, 20, 150, 25));
pv.setBounds(new Rectangle(90, 40, 175, 45));
pvR.setBounds(new Rectangle(220, 40, 175, 45));
javav.setBounds(new Rectangle(90, 60, 175, 45));
javavR.setBounds(new Rectangle(220, 60, 175, 45));
sqlv.setBounds(new Rectangle(90, 80, 175, 45));
sqlvR.setBounds(new Rectangle(220, 80, 175, 45));
pt.setBounds(new Rectangle(90, 100, 175, 45));
onoma1.setBounds(new Rectangle(220, 100, 175, 45));
onoma2.setBounds(new Rectangle(220, 120, 175, 45));
onoma3.setBounds(new Rectangle(90, 140, 175, 45));
onoma3R.setBounds(new Rectangle(220, 140, 175, 45));
alr.setBounds(new Rectangle(30, 170, 500, 45));
alr1.setBounds(new Rectangle(170, 190, 500, 45));
panel2.add(label);
panel2.add(pv);
panel2.add(pvR);
panel2.add(javav);
panel2.add(javavR);
panel2.add(sqlv);
panel2.add(sqlvR);
panel2.add(pt);
panel2.add(onoma1);
panel2.add(onoma2);
panel2.add(onoma3);
panel2.add(onoma3R);
panel2.add(alr);
panel2.add(alr1);
tabbedPane.addTab("Detail", icon, panel2);
tabbedPane.setMnemonicAt(1, KeyEvent.VK_2);
tabbedPane.setSize(new Dimension(400, 300));
//Add the tabbed pane to this panel.
add(tabbedPane);
//Uncomment the following line to use scrolling tabs.
//tabbedPane.setTabLayoutPolicy(JTabbedPane.SCROLL_TAB_LAYOUT);
protected JComponent makeTextPanel(String text) {
JPanel panel = new JPanel(false);
JLabel filler = new JLabel(text);
filler.setHorizontalAlignment(JLabel.CENTER);
//panel.setLayout(new GridLayout(1, 1));
panel.add(filler);
return panel;
/** Returns an ImageIcon, or null if the path was invalid. */
protected static ImageIcon createImageIcon(String path) {
java.net.URL imgURL = TabbedAbout.class.getResource(path);
if (imgURL != null) {
return new ImageIcon(imgURL);
} else {
System.err.println("Couldn't find file: " + path);
return null;
* Create the GUI and show it. For thread safety,
* this method should be invoked from the
* event-dispatching thread.
private static void createAndShowGUI() {
//Make sure we have nice window decorations.
JFrame.setDefaultLookAndFeelDecorated(true);
//Create and set up the window.
JFrame frame = new JFrame("About");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Create and set up the content pane.
JComponent newContentPane = new TabbedAbout();
newContentPane.setOpaque(true); //content panes must be opaque
frame.getContentPane().add(new TabbedAbout(),
BorderLayout.CENTER);
//Display the window.
frame.pack();
frame.setVisible(true);
public static void main(String[] args) {
//Schedule a job for the event-dispatching thread:
//creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}But independetly was working just fine. Excatly as I wanted
Message was edited by:
sickboy -
I have IMAQ image and I want to generate report ald place this image in table cell:
Can I do that without safing image on disk?Hi,
I don't believe there is another way, because you have to specify the path to the file.
What you can do is to create programmatically and delete the file at the end of your program execution.
Best Regards,
I.R.
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