IMAQ vision function reference

Similar Questions

• bug in several functions of IMAQ vision mask

  Some functions IMAQ Vision bad work if you use the image source as the mask. I keep running into this bug in IMAQ Vision, Vision functions exhibit this behavior, and others do not. It is not documented in job descriptions. Even if it were, it would still be a bug. Example:

  1. create an image source U8 containing zeros and nonzero values.

  2. son of the image in the entry source and IMAQ mask entry quantify and return the value of % of the global report to see what percentage of pixels are different from zero.

  The answer is wrong. If you copy the image in a separate image first and distinct picture of wire in the input mask, you get the right answer. See attached VI for building

  

  See you soon,.

  -root

  If someone knows a way to return the number of pixels not dummies in an image without duplicating the image in memory, please post the method here so I can mark it as a solution. I find that using IMAQ getpixelvalue in a double loop is extremely slow, even with a shift as a counter register.

  Using the histogram IMAQ VI seems to work (with no mask image)-the first index of the returned histogram array is the number of zero pixel, so the sum of the table no less (or less area this) is the number of pixels non-null.  The VI has the same bug with the image of the mask (and I agree with you that document a bug does not correct!) but at least you can use for this problem.

  Cheers ~ Greg

• IMAQ Vision Image structure

  I currently grabbing an image, using my own equipment and windows messaging and do it in memory as a bitmap image.  How to copy this image in a structure Image IMAQ Vision.  I see other threads that the structure is the owner, but is it possible to copy the raw data in the structure of the Image.  The only way I can achieve this is to write in a BMP file, and then use the () imaqReadFile to read back in. It takes a lot of time, it would be much faster if I could copy from one location to another.

  You can use imaqArrayToImage(), but I've always found this difficult to use function.

  my favorite way is to create a new image of the right size using imaqCreateImage(), then get a pointer to the first pixel using imaqGetImageInfo() and fill pixels directly by copying the data in the buffer of the image. I already showed how to access pixels directly on this forum. You should pay attention to the size of your pixels and the format of the image (RGB, grey levels).

• Error 1074395720 has occurred to IMAQ find circular Edge 3 IMAQ Vision: invalid KING.

  Hello

  I am writing a program to adapt to a circle of an image (from the avi), but when running the IMAQ find circular edge v3.vi I get the error message:

  "Error 1074395720 occurred at IMAQ find circular Edge 3.

  Possible reasons

  IMAQ Vision: Invalid KING. "

  I use the vi KING of construct IMAQ to set the return on investment and I am sure that the KING output is in a format suitable for the discovery of the IMAQ circular edge v3 vi.

  I joined my program (Labview 2011)

  Any thoughts?

  Thank you very much

  Rory

  Hi Rory,

  Welcome to the Forums of NOR.

  «IMAQ find circular Edge 3' expects a return on investment for type 'Ring'.» There are a number of functions in labVIEW for the conversion of the type of return on investment as "IMAQ convert the KING to ring. However, as the circular edge VI find JUST does not ring but bounding box and other details as well, there is a strange solution to this problem.

  Drop-down "IMAQ convert KING ring" and get the return on investment through. Drop-down and then "Convert ring to the KING" (Yes, really) and pass the output of who to "find the circular edge.

  It is circular, strange workaround, but it seems to force the type of return on investment to go to the ring and so works.

  Let me know if you have any other questions.

  Thank you very much

• How to download imaq vision

  I am a new user of labview and I wish to study this subject IMAQ vision. However, for the same thing, I have no idea as to how I can use it on LabView. Smoker I don't understand if I have to download additional software for IMAQ Vision work with LabView. Kindly advice me.

  Jean-Luc

  NOR-Vision and NOR-IMAQ are two different things. NOR-IMAQ is a set of drivers and software to acquire, view and save images of some devices. The supported devices are in the readme file. This software is free. NEITHER Vision is a software level. He did work with a wider variety of devices. It is not free.

  I think that it is best to call your local sales office OR that they would be better suited to help you, rather than this forum. We mainly answer technical questions here.

• IMAQ Vision: (Hex 0xBFF60403) copy unauthorized IMAQ Vision.

  Hi all

  I have a Labview program developed a few years ago by one of my students who use some images from a camera to do some analysis.

  It's the environment that was used:

  Windows Xp professional version 2002 Service Pack 2

  LabVIEW 7.1
  LabVIEW Run-time Engine 6.1 - 7, 0 - 7.1.1
  NOR-Imaq 3.1.0
  IMAQ vision 7.1.1
  NI-Visa 3.1
  NOR-488. 2 2.40

  NOR-IMAQ 3.1

  Application Builder 7.1

  Now, the PC crashed and I tried to restore all the software and VI.

  I got these (3) types of errors when I lounched the VI:

  1074396157 error occurred at WindShow IMAQ
  Unauthorized copy of IMAQ Vision.

  1074396157 error occurred at WindSize IMAQ
  Unauthorized copy of IMAQ Vision.

  1074396157 error occurred at WindMove IMAQ
  Unauthorized copy of IMAQ Vision.

  Possible reasons:

  IMAQ Vision: (Hex 0xBFF60403) copy unauthorized IMAQ Vision.

  I read that it is possible to overcome these types of errors lounched visionXXrte.exe, but I don't have on my PC.

  What can I do?

  Thank you for your help

  Gino

  Hi all

  the problem has been resolved.

  It has been necessary run the NILM License Manager and activate the product of the Vision, which has been exceeded (I don't know why).

  So, thanks to all the world.

  Gino

• Lost file "IMAQ Vision example Folder.vi"

  Hello world

  I was working with this file and I lost it. Now, I could not find or fix also I re - install all the modules of the vision, and many examples use this file to take the path of the image to work. Someone can help me trying to find the path and bring me the IMAQ Vision example Folder.vi

  Thank you for your cooperation,

  John

  Hi, thanks for your response, I did it and I don't know why, but did not work. I solve the problem using the IMAQ Vision AVI Folder.vi and change the block diagram and removal of some parts and then rename it as the vi that I lost. In this way, I solved the problem.

• IMAQ Vision: Mode invalid (Hex 0xBFF6048C) ranking.

  I use usb enter vi and when I run my vi I get an error

  IMAQ Vision: Mode invalid (Hex 0xBFF6048C) ranking.

  what it means and how to fix it?

  Thanks for your help

  another stupid mistake. It had to be a file name in the folder not a file name.

• IMAQ Vision NOR find circular edge

  Hello

  I had a few a problem with a circular border of LabView Vision search.  The problem is when the function found my circle he put a red circle, that's good! but when I move the object to try to follow the point, all the old red circle will not disaper.

  After I got everything its quite messy in my interface.

  I got a picture of the problem.

  I want to know how to clear the circle each iteration.

  Thank you

  Hi PIOU123,

  To clear the overlay use the clear overlay VI IMAQ. An example of this in use VI can be found by going to help > find examples and then navigate to the Modules and Toolkits > Vision > geometric matching > geometric Matching.VI

• IMAQ Vision: image not valid type

  I use the evaluation version of LabView Pro and Vision Builder to process a video taken from a Webcam from Microsoft. I try to apply a part of the function as a filter of treatment or look at a histogram as graph below but LabView always returns invalid image type.  I assume that these functions cannot process the image directly from webcam (using Vision acquisition) and may need to be converted before their transformation. However, I'm unable to do it. Please give me any suggestions or provide that I have to use the function

  

  In most cases, WebCam will deliver Image RGB (color). Even if you have turned on the WebCam in grayscale mode (then RGB components are equal). IMAQ polygon can handle the U16 only U8 I have 16 or types of SGL.

  What you can do:

  (A) use IMAQ ColorHistograph instead of the polygon IMAQ.

  or

  (B) convert your color to grayscale image (good way is to take ExtractSingleColorPlane IMAQ and set the type of intensity. Destination image must have type Grayscale U8). You will then be able to use IMAQ polygon.

  Andrey.

• IMAQ Vision: IO file error

  Hello

  I get the error in the subject, trying to open a file that was acquired from a phone android via the command "adb shell screencap.  I have attached the criterion vi and the image.  I can't seem to find the solution to open this file without error happening on "imaq readfile.  I tried image different types on imaq create and also tried the other way to read that an image file named "imaq read info image and vision.

  I see that I can use the 'imaq getimageinfo' tool to get the parameter image correctly.  I can't get labview to open the image without error, given the tools available.  Help, please.

  P.S. I'm under labview 2013 sp1.

  Thanks in advance,

  David Jenkinson

  Confirmation: Your product-1074395993 code error code when executing "IMAQ ReadFile" during the reading of this png. I don't know what could be the problem with this PNG. To work around the problem, you can use 'Read the PNG file' of the 'Graphics Formats VIs"which doesn't have this problem.

  

• IMAQ Vision: Is not an Image error when using producer/consumer

  Hi any person

  I used the Vision Express to solve the problem of Patern Machine.

  I want to put Assistant and Aquistion in 2 loop parallel. So I used the producer/consumer to transfer data

  After running VI, I pressed the Stop button and I encountered this error

  I think that getting the queue has a problem. I changed Image to Contant control and connect it to the data type of element. I think that this path is correct.

  So, in case of error, it addressed to Coppy IMAQ in Assistant. So I think that I used the Comunication of the queue is not correct.

  How can I solve this problem

  Thank you

  

  You can see more detail in the following video: https://www.youtube.com/watch?v=i6FOQ2jypXc&feature=youtu.be

  Try this:

  

  You should put the image process in the loop of the consumer and release it properly.

• 2014.02 - Bluescreen Windows 8.1 vision acquisition software (imaq vision acquisition express vi in labview)

  Hello

  I have big problems to install the Acquisition of Vision software to Windows (64-bit) with installed LabView 2013 SP1 (32-bit) 8.1. He finds himself in a blue screen after the computer is restarted.

  My main problem was that I only had 'Vision Acquisition' express vi LabView 2013 SP1 Windows 8.1. So I installed this VAS2014.02 (http://www.ni.com/download/ni-vision-acquisition-software-2014.02/4584/en/) and it solved the problem, the vi in labview and works fine until I restart my pc. Because after the restart of the blue screen is coming. After several times of blue screens it came Windows 8.1 recovery menu. By selecting "Help for starting" or something similar (I have German OS) in "Advanced Boot Options", the system could be recovered with relatively little loss of data (work today has been lost, only yesterday the files were there). So I repeated the installation of VAS2014.02 and once again the same: blue screen after restarting Windows 8.1.

  It is not compatible with it?

  (but it is: NEITHER Vision Acquisition Software 2014.02 - Windows 8 32-bits/8 64-bit/7 64-bit/7 32 - bit / Vista / XP 32-bit/Server 2008/Server 2003 R2 32-bit)

  What can I do to use the Vision Acquisition express vi into labView 2013 Sp1 Windows 8.1? I had lost the good part of the time today to operate without success. Thank you for your suggestions in tips!

  Michael

  Hi Michael,

  I'm sorry for the problems you are faced with customer Service. There is a known issue with some software components which ARE pulled inward, which will cause the BSOD you see. The problem is examined formally at the moment, but in the meantime, the simplest solution is to remove the stand from the IO IMAQ for R series cards (1483, 1473R, 8237R, 825xR) as described here: http://forums.ni.com/t5/Machine-Vision/After-upgrade-to-NI-Vision-Acquisition-Feb-2014-Windows-does-.... If you require the use of these cards, there are other workaround solutions for which you can contact OR support that is formally addressed.

  Kind regards

  Joseph

• several webcams in for usb or imaq vision Builder

  Hello

  I have a question about imaq nor for usb or vision builder AI 3.6 (I did a vi with imaq and I run in the constructor of the vision) and I want to know how can I connect multiple webcams to the computer, and how many of them can be connected. can they all be of a make and model and can they be executed with a driver installed on the computer?

  Thank you

  Hello

  In general NOR-IMAQ for USB can support only one camera at a time. You can acquire multiple cameras (not simultaneously) using USB IMAQ list VI cameras to identify each device plugged into your system and access it via the other IMAQ live to USB.

  I would also like to point out that Vision Builder AI does not support the NO-IMAQ for cameras USB driver. It is designed to solve machine vision applications, but USB cameras provide in general or advanced necessary for machine vision triggering modes.  Because the machine vision and USB cameras will usually together, we do support USB cameras in Vision Builder AI.

• Non-linear function Lev - Mar - output gradient functions reference table?

  Hello

  I have the whole 8.6 developer and am relatively new to labview.  First time posting, but these tips already have a lot of my problems solved.  Thank you!  My luck ran out however...

  I had worked on a recursive function to fit a set of nonlinear data, when I stumbled upon the function of lev - mar.  What a great discovery... it works very well.  However, I tried to determine the criteria for the named 'f '(X,a)' reference to the static VI which contains the lev - Mar function to fit the output.  The function performs fine without her that it will calculate the slopes in itself if the gradient table is empty, but it takes a little more time and I'm trying to speed up a bit.

  The example 'Fit Gauss surface with offset.vi' is the only example I could find where the output of f'(X,a) of the reference to the function VI is populated, but I'm a little rusty with my calculations and has failed to reverse engineer exactly what should be the values that they had classes in this table.

  I would like to be able to complete the table of f'(X,a) with the data of a 2d versus 3d surface curve in the example 'Fit Gauss surface with offset.vi.  Is attached a screenshot of the example showing the output in the example of f. '(X,a).

  Thank you very much!

  -Bill

  If you do not provide the analytical partial derivatives, LabVIEW will use automatically digital derived partial. You can watch the labview code in detail to see how it does, just open the VI and search for "LM digital gradient.vi.

  I don't know what, "recursive function" in this context, but they have an analytic expression for the partial derivatives?

  Even if the analysis of the partial derivatives are not possible, it may be an advantage to making your own derived partial inside the model. It seems to be much faster.

  You'd basically is to calculate the function several times, each time with one of the parameters that is incremented by a small delta and subtract function calculated with the current settings Plains each and divide the result by the delta. Do everything in a table 2D for the output of f'(X,a).

  The image shows one way to do this inside the model. The black square is a model where you replace you own function (f(x,a)).

  

  Let me know if you have any questions.