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Best reasonable machine vision camera?

December 13, 2015, 2:55 pm
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Looking for a second hand unit, must have excellent compatibility with LB Vision/MAX..

Lots of camera link 1k Baslers and then some newer aces and runners (gig, usb 3, and camera link) on the bay in the $50-$500 range. The slower frame rate basler 5MP ace is enticing (don't need a high frame rate, would like better res).

I understand needing a frame grabber for CameraLink cameras, but do you need a special NI, or comparable USB 3.0 of gigE card.. or would any USB 3.0 (or GigE) card work?

The application is agriculture inspection post-harvest, particularly leaf identification, flower identification, etc. Any help would be greatly appreciated!
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0xBFF69037

December 13, 2015, 10:16 pm
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Hello Ni,

 

We are using the NI-MAX and want to see the image from our USB3 vision Camera..

The image format to be set is YUV422_unpacked..

There is the error

Error 0xBFF69037 - No decoder available for selected pixel format..

 

Regards,

Nick.

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HOW to change color image to R/G/B as 2D matrix?

December 14, 2015, 12:42 am
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Freshman here.

I just want to transform a color image into 2D matrix so that I can use Matlab to deal with it.

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Is it possible to switch a cvs 1458 wes7 to a Linux RT?

December 14, 2015, 1:04 pm
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Is there a Linux RT image that I could simply installed on the CVS instead of the WES7 image?

 

Thank you,

Patrick

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dimension scale bar

December 15, 2015, 11:30 am
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Hi

 

Is it possible to add a dimension scale bar to an image acquired by labview? If so, could you direct me on how to acheive this?

 

Thanks

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Overlay elapsed time

December 15, 2015, 11:32 am
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Hi

 

Is it possible to overlay the video time to the video acquired via labview to an .avi file? If so, could you please direct me on how to do this?

 

Thanks

 

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pattern match a black image with a black template?

December 15, 2015, 2:11 pm
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Hi,

We have a we have a teststand step which calls a vision module, to perform an on-the-fly "patternchange" step.  The labview code:

 

  • Obtains an image from the camera (image is taking a picture of a device under test LCD), uses this as a pattern match template
  • Loops acquiring a new image, until pattern match drops below a given threshold, and exits, or exits if a timeout value is reached.

This works pretty good for a generic "patternchange" where we just want to see if the screen changes on the device under test, for synchronization purposes, not caring about what it changes from or to.

 

But this test seems to break down when the both the template and screen are black.  What we are seeing in this case is that when pattern matching a black pattern to a black image, the pattern match fails, and thus our step falsely detects a "pattern change", when nothing changed at all (from black).

 

Is this a limitation in the pattern match tool? Should we not see a match when pattern matching a black template to a black image?

 

Thanks

David Jenkinson

 

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imaqdx unknown error 80040217

December 17, 2015, 1:47 am
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Hello,

 

I have an USB camera (Logitech c920), that I want to use in a LabVIEW program.

I have LabVIEW 2011 SP1 with Vision Developer 2011, and IMAQdx 4.3.5 installed on two Windows 7 64 bit computers.

The installs are as far as I know identical.

 

The camera works fine on both computers using third party software.

 

On first computer I can find the camera in NI MAX, and SNAP a photo.

 

On second computer I can find the camera, but SNAP gives me the error:

 

Error 0x80040217

An undetermined error code has been encountered.

 

On repoeated attempts to SNAP I get the error:

 

Error 0x80004005

An undetermined error code has been encountered.

 

If I try to create a LabVIEW program, where I use the "Snap.vi" I get the following error:

 

Error -2147220969 occurred at IMAQdx Configure Acquisition.vi
This error code is undefined.

 

I have checked that the version of "IMAQdx.llb" and "niimaqdx.dll" are the same.

 

Can anyone help me understand what the difference is between my two computers, and why Snap works on one and not the other.

 

Thanks for reading!

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IMAQdx exposure time: when the next frame with new exposure time is ready?

December 17, 2015, 12:13 pm
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I need to perform OCR on some label. To locate the label I use high exposure time to make strong contrast between wide dark and bright areas. The label itself should be acquired with lower exposure time. I open camera, run IMAQdx Configure Grab VI, and then change the exposure time with "CameraAttributes::AcquisitionControl::ExposureTimeRaw" parameter when needed. I can put some pause to be sure the camera adopted to the new value but I'd like to have a clean solution. Unfortunately, running IMAQdx Grab2 VI with "Wait for Next Buffer" is not enough. Is there any way to determine whether the new frame uses new or old exposure time?

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Missing image capture, etc IMAQ VIs

December 18, 2015, 4:34 am
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Hi all,

 

I seem to be missing all of the "image capture" etc VI's from LabView, even with Vision and VAS installed.  No Vision Acquisition express either (only Vision Assistant express).  What am I missing??

 

Thanks in advance!

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can't link imaq grab to imaq close in labview

December 20, 2015, 10:39 pm
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Hi there and thanks for entering this post Smiley Happy

I am still new in machine vision. I'm working on a project in Labview, but I am not able to connect the session out of vi IMAQ grab to the session in of the vi IMAQ close.. Labview tells me that the two wires are of different data types: the type of the first is IMAQdx.ctl , the second is a class IMAQ.

Can you help ?

Thanks 

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camera file for JAI GO-5000M-PMCL

December 22, 2015, 1:14 am
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NI PCIe-1430 software trigger ??

December 22, 2015, 6:03 am
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Hi,

 

I need to start an acquisition from a NI PCIe-1430 frame grabber.  So far I used to trigger the start of the acquisition from the external "trigger in" SMA connector using another NI board (NI PCI-6123) to generate the trigger pulse. From now, I want to eliminate the PCI-6123 but can't find how to trigger the frame grabber in a "software" manner.  I read about the RTSI connector but this would require some hardware to be connected so I don't think this can help me.

 

Is there anyone that can help me to find out a way to do it wright without re-writting everything?

 

I included snapshots of my code.

 

Thank you for your help

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1473R FPGA

December 24, 2015, 2:12 pm
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Hı all
I m using 1473R card with basler camera.
I have some questions about vision assistant on 1473R examples in labview fpga.
This program uses 100 MHz clock with SCTL when writing to DMA for image reading. My question is how I can redesign this code to work at 40Mhz with SCTL. I tried changing all clocks with SCTL but control IO errors occur. This IO control works at 100Mhz message comes. Thanks for your replies.
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1473R particle analysis

December 24, 2015, 2:26 pm
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Hı
There is an example program in labview fpga. Particle analysis on 1473R is the program. This demo reads an image from host to fpga then finds particles on the image. İs it possible to change this program and combine with vision assistant on 1473R.so is it possible reading real time images that comes from camera link camera and find particles on images then we can see at image and partcles coordinates at host computer.
thanks.
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motion blur

January 4, 2016, 3:07 am
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Hi, 

 I have a image with motion blur. I want to measure a particular measument. But due to motion blur measurement gives wrong value. Can any one guide me to remove the error in measurement using the same imge.

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shared variables hosted in labview problems with accessing via vision builder ai

January 6, 2016, 3:06 am
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i have a problem with labview and the vision builder.

 

I want to host shared variables from a pc with a labview project.

I have an cvs1458rt which should connect via vision builder ai to the network variables.

When I simulate the cvs1458RT I have no problems.

 

First I created a variable in my project and publish it to the network. After that I switch into the Vision Builder AI and want to create a network variable. I add this one and search the path of it and find it and accept it with "okay". A black exclamation mark in a yelloy circle appears on the bottom of the variable manager window with the text: Variable Access Timed Out

 

The other way around I have no Problems. When I create variables on the CVS via the VBAI and publish them on the network. After that I can read and write via VBAI and LabVIEW VI.

 

I tried LabVIEW 2012 SP1

and LabVIEW 2014

 

I have the Vision Builder AI 2014 SP1

 

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Detect interruption in contour?

January 6, 2016, 5:29 am
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Hi guys,

 

is it possible with Vision Development Module to detect a contour and further to detect if it is interrupted or closed?

 

A colleague of mine explained to me a method using a lasso tool. If a shape, for example a square with side length "a" is complete, the lasso envelops it completely from outside. The resulting lasso length would be slightly larger than 4*a.

But if the square is interrupted in one or more locations, the resulting contour would be enveloped from the inside as well, giving a lasso length much larger than 4*a. Thus it should be possible to detect the interruption.

 

I have attached an image to illustrate.

Thanks!

 

 

 

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How to make full image of the EVS System and reinstall the vision system software?

January 7, 2016, 12:24 am
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Good day,

 

i have a problem with controller National Instruments NI CVS 1454 (Image in attached). There is something wrong with inspection results, that's why I want to reinstalling the software of the controller. I'll be very thanksfull if  someone describe me in couple steps how to make Full image of the software and reinstall the system. 

 

Thank you very much in advance!

R. Bukov

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IMAQdx Configure Grab decoder error with Mono10 Pixel Format

January 12, 2016, 4:20 am
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Hello, 

 

I have recently encountered the following problem while I am trying to grab images through a iPort CL-U3 Pleora USB3 vision.

 

"Error -1074360265 occurred at IMAQdx Configure Acquisition.vi

Possible reason(s):

NI-IMAQdx: (Hex 0xBFF69037) No decoder available for selected pixel format."

 

I always get this error when I switch the "Pixel Format" to "Mono10". In my images I use "Image Type" "Greyscale (I16)".

 

My test code works fine for "Pixel Format" "Mono8" but not the other ones.

It is also important to note that in MAX, with "Greyscale (I16)" and "Mono10" it works fine as well.

 

Any help will be appreciated.

Thanks,

Harry

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