File acces denied @ IMAQ Write File 2

Hi,
I've started a project using Vision Development Module and I'm stuck in saving some templates to a folder.
I tried many other ' methods' using the same Imaq Write File 2 and all have the same error...
Below it's a basic example.
Maybe somebody can provide a correct solutions or give me an idee about what might be wrong.
I'm loosing my mind soon
PS: I gave Full Control Acces to all users ...
Thanks in advance!

Thanks for your reply!
Actually, in the main vi I'm using grab function.
The thing is... i'm using Folder Path instead File Path... If I'm creating a control from vi's path terminal, it will create a File Path control which needs : "the complete pathname, including drive, directory, and filename, of the file to write". But I cannot have a filename before I get a picture. Maybe there is another vi which has to be used before, for setting the filename???
Don't worry about "F" drive. I've already tried the other drives and same thing.
Thanks!

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Cant get IMAQ write file 2 to ask user for the path.

I am currently using an IMAQ write file 2 to create a .bmp image. I have the VI attached to a control path that allows the user to enter the path where they want to save the file. However I dont want the user to have to make sure they typed the path in before the IMAQ write file executes. I want the program to work so that when the IMAQ write file executes a window appears asking the user where they would like to save the file. If someone could help me out I would appreciate it thanks.
Solved!
Go to Solution.

Use the File dialog VI under File I/O >> Advanced File Functions palette

IMAQ Write JPEG File doesn't save color

Hi, I'm writing an 8 bit image to file. If I save it as bmp (using "IMAQ Write BMP.vi") File then color data is saved. If I save it as Jpeg using "IMAQ Write JPEG File", then I only get grayscale. I have attached a demonstration. There appears to be a bug in the IMAQ vi.
Attachments:
ni_demo.llb ‏203 KB

At IMAQ create.vi you need to specify RGB image type. You are actually using 8 bit, that is a grayscale type.
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ni_demo.llb ‏203 KB

Probleme avec Imaq write file qui n'enregistre pas les images en jpg

Bonjour,
dans le cadre d'un stage, je suis en train de dévellopper un programme qui récupère une vidéo issue d'une caméra usb. Jusque là tout vas bien. Mais je souhaite réalisé une vidéo a partir d'une suite d'image au format jpeg que le programme aura enregistrer dans un dossier.
Mon probleme etant que Imaq write file 2 que j'utilise n'arrive pas a enregistrer les image au format jpg (alors qu'il y arrive au forma png, tiff ou jpg2000). Ainsi, lorsque je lance la capture, le programme a l'air de faire des opération mais lorsque je vais dans le dossier où doivent etre entreposé les jpeg, celui ci est vide.
J'utilise labview 2010 et suis sous windows 7 x64 bits.
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oui bien sur, le voila :
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test Controle_caméra_prosilica_2.8_2121.vi ‏3752 KB
CalculateFPS.vi ‏12 KB

Acces denied

Hello to everybody. I'm developing a Client-Server application with RMI, I'm having a problem.
I can lookup the remote object, but it throws an Exception when a method of this remote object returns an Object. The exception is:
java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException:acces denied to class loader
java.lang.ClassNotFoundException: java.security.AccesControlException: acces denied (java.io.FilePermission \d:\projectes\m2m\build\- read)
<<no stackl trace available>>
This occurs when I move the server to a public Ip, when the application runs in a LAN, there are no problems. I think i have all the permissions, and I don't know what i have to do. Can anybody help me, please???
P.D. Sorry for my bad English

Do you start your server with a server security policy like:
-Djava.security.policy=server.policy
server.policy:
grant {
permission java.net.SocketPermission "*", "accept, connect, listen, resolve";
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Regards,
Geri

What is the input "key" in the IMAQ Write Custom Data palette?

Hello!
I am not able to use correctly the IMAQ Write Custom Data palette because I do not know what is the input "key".
Does anyone know its meaning?
Sincerely,
Fábio Machado Cavalcanti
Canada-Brazil Science Without Borders Student
Lakehead University, Thunder Bay, Ontario, Canada
Federal University of Pernambuco (UFPE), Recife, PE, Brazil
Undergraduate Student in Chemical Engineering

Thank you for replying Ninad Regundwar!
I agree with this. I have already read this information in the LabView Help.
However, I would like to know what is the "key" specifically. I know that it is a string.
I have written a code to add some acquisition features in a PNG Image File. For this, I have used the following palettes: IMAQ Write File 2 - PNG with Vision Info and IMAQ Write Custom Data.
Afterwards, I have written another code to read the acquisition features from this PNG Image File. For this one, I have used the following palettes: IMAQ Read Image and Vision Information and IMAQ Read Custom Data.
But, when I am reading the acquisition features, an error message appears: "ERROR -1074395723 occurred at IMAQ Read Custom Data - IMAQ Vision: The key you specified cannot be found in the image"
I do not know what I have to put in the input "key". So, I have been trying different values for it: "data", "hello", "13", "56", etc. But, none of these has worked and the same message has appeared.
Does someone know what I have to put in the input "key"? Does someone have an example that shows how to use the palettes: "IMAQ Write Custom Data" and "IMAQ Read Custom Data" correctly?
Sincerely,
Fábio Machado Cavalcanti
Canada-Brazil Science Without Borders Student
Lakehead University, Thunder Bay, Ontario, Canada
Federal University of Pernambuco (UFPE), Recife, PE, Brazil
Undergraduate Student in Chemical Engineering

Java.security.AccesControlException:acces denied

I do a signed applet that send a stream of an archive, to a servlet, this servlet, save the stream in the other archive, but now i want to do same calling this applet method with JavaScript, but when i call this method, i see this message "java.security.AccesControlException:acces denied (java.io.FilePermission c:\src\im1.jpg read)" maybe some people help me with this problem

Since 1.4.2 the stack is checked according to specification. Allthough the
current method might be in signed and trusted code is is called by javascript
wich is automatically untrusted.
See links below to solve your problem.
Signing applets:
http://forum.java.sun.com/thread.jsp?forum=63&thread=524815
second post and reply 18 for the java class file using doprivileged
http://forum.java.sun.com/thread.jsp?forum=63&thread=409341
4th post explaining how to set up your own policy with your own keystore
Still problems?
A Full trace might help us out:
http://forum.java.sun.com/thread.jspa?threadID=656028

AVI2 Create error: Acces denied.

Dear all,
For my research project on a fusion device I've dug into Labview to automize my measurements. Allthough I'm a novice in Labview the program is working as required, except for one part. There is a webcam involved which monitors the inside of the reactor; during operation I want to know what happens inside. I've made a while loop which uses NI-MAXdq VI's to continuously display the webcam images. But next to that I also want to record these videos as .avi files and that is where I'm stuck. I've made a second while loop with a local variable of the images as input that uses the AVI2 VI's to automatically record the images during a measurement. However I keep getting an error at the AVI2 Create VI saying Acces Denied. Any help is very welcome.
Kinds regards,
Mick
P.S. in the attached image you can see the camera and the recorder loop, and also the other event cases of the recorder loop.
Attachments:
labview problem.png ‏57 KB

From the screenshots it's little bit difficult.
Can you post your vi in lv12(file>>save for previous version) if possible.
-Did you try giving different path/location instead of C drive??
-The code which i have shown is also for lv 12 only!!! did it work or not?
Thanks
uday,
Please Mark the solution as accepted if your problem is solved and help author by clicking on kudoes
Certified LabVIEW Associate Developer (CLAD) Using LV13

IMAQ write to bmp

I am grabing an image and I am trying to save it. For this I am creating a file and then using IMAQ Write to BMP File but it doesn't work. I suppose that there is something wrong in the way I am creating the file or something like that. Could someone have a look at my .vi ? Thank you.
Attachments:
SaveImage.vi ‏93 KB

Hi there,
Looking at your vi,
What is happening is that you are disposing of the image at the same time as you are trying to save the image. If you wire the error out from the write to bmp file vi to the error in of the dispose of image vi. Then you will save the file before you dispose of the image.
That should solve your problem. Post back if you have any problems.
Thanks
AdamB
Applications Engineering Team Leader | National Instruments | UK & Ireland

IMAQ write palette not visible

I have installed NI Vision 2011 but IMAQ write file vi is not visible but IMAQ write file 2 vi is visible. No idea what is the problem.
I am using labview 2011 on windows 7.
Kudos are always welcome if you got solution to some extent.
I need my difficulties because they are necessary to enjoy my success.
--Ranjeet

Write2 replaces Write. It handles file formats differently. I believe there is a legacy option during install that will put these earlier versions of Vision VIs into a separate folder, if needed. Check the Device Drivers Install CD, and DVD 2.
Machine Vision, Robotics, Embedded Systems, Surveillance
www.movimed.com - Custom Imaging Solutions

IMAQ Write JPEG File Error

Hi,
I am trying to save the image file captured by a camera (.tiff) to JPEG file, but it came up with an error. Can anyone tell me how to fix this issue?
The sample VI and the TIFF image file are attached. Thanks a lot.
Jane
Solved!
Go to Solution.
Attachments:
SaveJPEG.vi ‏47 KB
SaveJPEG.vi ‏47 KB
IR_Image.zip ‏443 KB

The VI "IMAQ Dispose" is not used immediately after creating the image with the VI "IMAQ Create" and is closing a session you will process later, you must also change the location at which to save the image, because to the location "C: \" and "C: \ temp \" often generates problems with operating system permissions.
Regards.
Jonathan Cruz
CHALLENGER
K U D O S __ B I E N V E N I D O S

Memory leak in IMAQ Write PNG File

Hi,
I have a labview program that I'm using to do Speckle Patter Interferometry - it takes an image, takes a second image after some time, then subtracts the original image from the first and saves the subtraction. The process reveals fringes on an object deformed on wavelength scales.
The problem currently is that the program seems to have a memory leak. When I run the program, the amount of memory being used (according to Windows Task Manager) just keeps going up and up then after about 20 minutes, it crashes with the error:
Error 1074396159
Not enough memory for required operation
The error is normally when the file tries to write the png file - though that is the part of the program that takes the most time so it could just be coincidence that it happens at this point in the loop.
I've tried using the labview profiler (output attached), but can't see a particular VI that is using an abhorrent amount of memory.
I'm fairly stuck for ideas - I've attached a library with the VI and its sub VIs - if anyone would be so kind as to give me a hand I'd be very much appreciative. I realise that my code is quiet messy - this is my first attempt at labview (albeit quite a long way into my first attempt) so any suggestions would be much appreciated also.
Thanks
Sam
Attachments:
ESPI.llb ‏556 KB
memory_profile.txt ‏237 KB

Hi Sam,
I'm glad to hear that you managed to fix the problem in your code. I have had a look at the code you posted and I have a few suggestions on how you can improve it.
In your code you haven't included the error clusters from the VIs. Most sub VI functions included in LabVIEW will have an Error In and Error Out port that will transfer any error information through the VI. If an error does occur in the code, the error will be passed through the rest of the VI. If a sub VI or function receives an error at its error in port the VI will not execute and the error will pass through until it reaches the end of the VI. At the end of a the VI there needs to be an Error Handler function to display the error information. As error information flows through the VI the same as the data, using error clusters is a good way to determine the flow of data through a VI. This is a good way to determine the data flow through the VI as opposed to Sequence Structures which should be used in moderation.
I have taken a segment of you code and made some minor modifications to demonstrate how error clusters can be used (see screenshot below).
Error clusters can be implemented into any logic for the stop condition of a while loop. The Unbundle by Name using the Status option can be used in conjunction with the error cluster to produce a boolean output depending on if an error has occurred. If an error does occur, the function will produce a true and if an error does not occur it will produce a false. The error cluster can also be expanded by hovering the mouse over the top or bottom of the function and dragging the grey box up or down. This is useful for when you want to produce multiple outputs from the same data, such as the histogram data in your VI.
Another thing I noticed in you code was some redundant logic. You had set the Stop button default on your front panel to true, which meant that an inverter had to be used to stop the first while loop and the stop condition in the last while loop had been changed to Continue if True. If you had kept the stop button default to False and the stop condition of the last while loop to Stop if True, the inverter on the first while loop would not be needed. This however is only a small issue but its something you could keep in mind when writing other code.
Hopefully these suggestions will help you to further develop you LabVIEW code. I understand that implementing these suggestions into you current code could be an issue due to the size of it, but they are good features to consider when developing any code in the future.
If there is anything you are unsure of please do not hesitate to post any questions. I will be more than happy to assist you.
Kind Regards
Jason W.
Applications Engineer
National Instruments UK & Ireland

File acces denied

I downloaded windows10 then adjusted personal setup. I now cant access my email on outlook, it says i dont have permission required......anyone know how to get access (ive gone back to windows7 but that didnt help)

Thanks for your reply!
Actually, in the main vi I'm using grab function.
The thing is... i'm using Folder Path instead File Path... If I'm creating a control from vi's path terminal, it will create a File Path control which needs : "the complete pathname, including drive, directory, and filename, of the file to write". But I cannot have a filename before I get a picture. Maybe there is another vi which has to be used before, for setting the filename???
Don't worry about "F" drive. I've already tried the other drives and same thing.
Thanks!

Acces denied or file missing

We have Zenworks 6.5 running on Neteare. When I made a simple application to
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Any ideas?
Jukka Olanter
Paijat-Hame Central Hospital
Lahti/Finland

It was my mistake. Disk was out of space and the script I was running did
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Jukka
"Jukka" <[email protected]> wrote in message
news:TN5oh.26043$[email protected]..
> We have Zenworks 6.5 running on Neteare. When I made a simple application
> to run cmd-file. When running I do get error message: Access Denied or
> File Missing. I have tried almost eveything, but it does not work.
> Any ideas?
>
> Jukka Olanter
> Paijat-Hame Central Hospital
> Lahti/Finland
>

File Error: Acces Denied Msg?

What does that mean? I tried to render my footage and that is the msg that popped up. Please help me. I have been trying to export to tape because when I compress the images are distorted.

That error usually means that there is a read/write permissions problem with either one of your source or the destination to which you are rendering to.
Try repairing permissions.

File acces denied @ IMAQ Write File 2

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