IMAQ Vision Image structure

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• 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 flatten image for the 64-bit version of string

  Hello

  I noticed customer odd based on vision "flatten image chain" on labview 64-bit edition. In my program I use flatten image to the string (with compression to JPEG and kind of flatten Image) to compress and send data to another application. I noticed on the compressed image color missmatch. I say red (255,0,0) 32-bit RGB image and I flattened for string and then save this string as a binary JPEG using Write to vi. When I open the file of the picture is blue (0,0,255). It doesen't matter how data is written (big endian, little endian or native) the result is always the same. 32-bit edition Labview, the code worked correctly.

  I reported a bug in the NC and I'm still waiting for a solution to this problem.

  LabVIEW: labview professional development system 2010 32/64 bits (with vision development module) completely v10.0f2 lie

  Systems: labview 64 bit on windows 7 64 bit-> flatten image to string-> false color

  LabVIEW 32-bit on windows 7 64 bit-> flatten image to String-> colors OK

  LabVIEW 32-bit on windows 7 32 bit-> flatten image to String-> colors OK

  A picture of the block diagram that I used to test the conversion is attached.

  See you soon

  Hi 3DVision.

  I think I see the problem... you code looks like he expects that out of "flattening the image of the chain" will actually be a JPG file as a string, because you have chosen to use the JPG compression options. However, this is not the way that VI is intended to be used. It is simply a way to convert an image type of Vision in a string representation which can be easier to haul around (for example via the network, the user file format, etc.). It is a parallel to normal 'flatten' that can be used on any type of data from LabVIEW. The format of this string is the owner and has provisions for storing information that is specific to the Vision images that cannot be represented in the file formats normal image (overlay information, benchmarking, custom, etc. data info). If you are save the string flattened in a file and expects to open as a normal JPG file, it is unlikely to work properly. The only way that it would be guaranteed to work is if you switch to the corresponding VI "unflatten chain. I don't know why it works in 32-bit mode, but it sounds like a lucky fluke.

  For your use case, you probably want to use the VI "IMAQ write the string. This does not give a result string that is identical to the specified file format.

  Eric

• Vision image acquisition

  I have image acquisition via a USB camera to a 12 speed.  The problem I have is to save these images.  If I save these images while acquiring data, the program cannot keep up at this rate.  I need a way to get images to 120 and then save them once the acquisition completed.  I tried to build a table, but it doesn't seem to work (the issue is when I have the array index, I do not get out images).  Any suggestions on this approach or maybe a different approach to achieve this.

  Thank you.

  Hey, gene,

  Guess IMAQ Vision + IMAQ USB was used.

  The typical error is grouping table of images IMAQ. Do not forget, that the IMAQ image passed as reference, not the image itself. This means, the following code will not work as you expect:

  

  What you need is the following. You must create your buffers before acquisition, then acquire each image in the own buffer:

  

  It will be useful,

  Andrey.

• 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 Cast Image error

  Hi guys!

  So I installed a program using a camera and an analysis of the image. It works fine on another computer, but during the installation of this second system, I get:

  

  The research I found: http://forums.ni.com/t5/LabVIEW/imaq-cast-image-error/m-p/3217035/highlight/true#M934230

  This suggests that it is a matter of licensing. However, I have activated the license on this computer.

  What should do?

  /Y

  Thus, it is fixed.

  It seems that I needed two NI Vision Acquisition Module AND NI Vision Development software and then enable them both to get the program running.

  Both can be installed under license with the license of the develop module.

  /Y

• 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.

• 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

• 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 function reference

  Hi all

  I'm new to Lab Windows/CVI and uses the library imaq vision.

  Could someone tell me where I can find the reference of function IMAQ Vision? I found a function reference manual at first--> National Instruments--> Vision--> Documentation. But all the functions described in this document are starting by img * (). I was looking for functions starting with imaq * ().

  I'm sorry that it might be a stupid question, but any help would be appreciated.

  See you soon,.

  Thanks Alex,

  I found the document

• IMAQ CREATE, image type setting

  Hello

  I'll put my f031b Pro Guppy camera pixel format.

  It seems too long I put attributes with property nodes: pixelformat as Mono 16, no matter what I put in the "IMAQ create"--->"image type", I still get output 16-bit gray scale.

  Is this correct?  What can control when I change the image type to "IMAQ Create"?

  best,

  Wen

  If the image is passed directly to the Image to get VI of IMAQdx, the type is unimportant since it is converted by the driver when it fills with data. Only the border size is relevant.

• 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: 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.

• Flicker of image with USB IMAQ vision

  Hi everyone

  I develop a detector/tracking system of simple movement using a USB WEBCAM, I calculated the difference in frame, between successive framework easily, using a business structure that exploit a while loop to store into two buffers two successive frame.

  IMAQ using subtract two stored image I got the picture of the difference. On this picture, I made a cast of the image using the image cast IMAQ plug-in, and successively, I applied cascading the following modules:

  1 - IMAQ BCGLookup (to improve the brightness and contrast of the image of the difference)

  2 - 2 AutoBThreeshold IMAQ (to get a picture of threesholded)

  3 - IMAQ GrayMorphology (to improve the form int threesholded image object)

  4. and finally IMAQ number of objects 2 (to count and track objects in the scene)

  The result is almost good (isn't a movement tracker real but it is sufficient for my purpose).

  Now my problem is related to the image of twinkling of effect on the area of display image, making it impossible to see the result of the image on the front panel. A highlight on the block diagram allows to obtain a more stable image (even though highlighted after the application of the IMAQ count objects flickers however). The effect of scrapie is absent in a simple vi published to view the source of the webcam.

  Now what should I do to remove this effect? Is a system or a problem related to the sampling problem video webcam (I use a webcam low cost with a resolution of 640 x 480 15 fps)?

  I have already read messages from the other person, in this forum about this problem, but my case is slightly different.

  to overcome the lack of understanding of my explanation, I enclose a diagram view that I realized.

  Thanks in advance for any answer you can give me on this problem.