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IMAQdx Software trigger not working

December 14, 2017, 2:43 am
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Hi,

 

I am using this equipment :

- Windows 10 PC with PCIe Firewire B-card

- LabVIEW 2015 + IMAQdx 15

- AVT Guppy Pro F503-B (Firewire B camera)

 

We are a machine building company, NI Alliance member and seasoned LabVIEW developers.

 

The camera supports software triggering, and this is working when using the camera with its configuration tool VIMBA from AVT.

However when I try to use the software triggering from MAX (or from LabVIEW), this does not work.

- The camera is correctly identified and is working well in free running mode.

- Under 'Camera attributes', I can set the trigger-mode to "Mode 0" (triggered).

- I can set the source to 'software trigger'.

- When I start the acquisition, The 'Execute'-button under 'software trigger' appears.

- However when I press the execute button, nothing happens. Then the acquisition times out after 5s with an error popup.

- The selector "Trigger activation" (level low or level high) does not make any difference.

 

software trigger.PNG

 

Capture.PNG

 

I get the same behaviour when implementing in LabVIEW.

 

Do you have any advise?

Thx,

Thomas.

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Converting 8x8bit pixel bus to 1x8bit

December 14, 2017, 9:05 pm
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I have a PCIe-1473R-LX110 FPGA board. I've been using the "10-Tap 8-bit" example to acquire images off my cameralink camera successfully. Now I would like to do some additional processing on my board. Unfortunately it looks like most of the NI Vision FPGA functionality is restricted to 1x8bit pixel bus inputs (at least for the Virtex-5 chip).

 

How can I convert or "split out" the 8x8bit pixel bus so I end up with a 1x8bit pixel bus for processing? I can't just put my camera in 1-tap mode. That would not give me sufficient data rate for my application.

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Taking a photo with USB webcam and comparing with more than one template

December 19, 2017, 3:58 am
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Hello everybody,

 

I'm currently working (starting now, actually) on a project that needs to do the following:

 

- Take one photo from a USB webcam;

- Compare with 6 differents templates (I attached two of them to show the complexity of the images);

- Show in an indicator which of the templates the photo matches.

 

The photos are taken with a steady tripod and in a closed area, so I believe the resulting snapshot would be pretty similar to one of the templates.

 

I have vision module with me, but I've never used it before and I'm having a hard time. Tried to use the "Golden Template" example, but did not succed. 

 

May anybody enlighten me with some tips or a general architecture that I can use?

 

PS: If you know any material (youtube videos or even some written guides), please share with me. Unfortunatelly I don't have the condition do to the full course from National, so I'll try to learn by myself.

 

 

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Information needed for NI 178x Smart Cameras

December 19, 2017, 2:09 pm
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NI IMAQ: The passed in sesssion or interface is invalid, Why??

December 20, 2017, 7:13 am
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please tell how to rectify the error.. i am using a webcam which is installed in my laptop.. when i assign the number of buffers to 5 and set the camera session to cam1 or cam0 the error is coming like this which i posted in the screenshot..

please let me know what to do to overcome this error..

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How to create my own IMAQ reference ?

December 21, 2017, 9:05 am
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Hello,

 

I'd like to comunicate with AR0132AT CMOS Digital Sensor.

I am experienced LabVIEW user but i never played with IMAQ tools.

I tried to detect if my camera was seen with MAX but without sucess.

Using LabVIEW 2016.

The CMOS supplier used to debug theirs images with DevSuite

http://www.onsemi.com/PowerSolutions/supportDoc.do?type=software&rpn=AR0543

 

Does it mean my CMOS sensor is not compatible with IMAQ driver?

If it is the case, is there a way to workaroud it ? Creating my own IMAQ reference ?

 

Any help will be apreciated.

Vincent

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Totem pole / open collector

December 22, 2017, 10:04 am
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Hi everybody. I'm trying to connect the iso out of IC3120 to an industrial continuous inket printer (coding printer), replicating a rotary encoder signal. The inkjet printer can accept either a totem pole signal, or an open collector signal (please see attached photo). 

Can anyone help give suggestion on which wiring I should use? Thank you very much.

 

regards,

 

Karman

 

image.jpeg

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What mask size does the Canny edge detection use for calculating the magnitude?

December 25, 2017, 1:25 am
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Hi, everyone. The original Canny edge detection algorithm uses the first derivative of Gaussian to compute the magnitude. I need to implement the original Canny edge detection algorithm but I can not figure out what size of the mask I should use. 
Or maybe somebody knows the idea of how this step is implemented in Matlab?

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Calculate angle b/w cam and object

January 2, 2018, 10:26 pm
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Hi,

 How to calculate angle between object and camera using image processing? 

If anybody knows please help me

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NIMAX application returns : IMAQdx error 0xBFF69000 not enough memory on Grab

January 4, 2018, 8:27 am
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We are working with a U3V vision camera that generates ~ 50 Mpixels (7920x6004) at 12 bits per pixel.

 

When we try to run a grab, we get an error message (see attached PNG):

 

IMAQdx Error:

 

Error 0xBFF69000

Not Enough memory

 

When we use smaller cameras or use this camera and configure a smaller ROI (e.g., 6000x6004), then we are able to grab.

 

The machine we are using should have plenty of memory to capture the frames.  What can we do to resolve this issue?  This is a stopping function.

 

-Mike

 

 

 

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About the NI Vision Assistant problem.

January 4, 2018, 11:13 pm
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 Hello,

I have encountered some problem with "Geometric matching"  when I use the NI Vision Assistant tool . The problem description is shown below:

1. Here is my "Template image".

 2_Pattern_ampm.png

2. When I load the target image in NI Vision Assistant. It can't found any match pattern.

EnableOccludedRange.png

3. But when I disable the "Occluded", the pattern can be found with "Occlusion" 0%.DisableOccludedRange.png

If my understanding for "Occuled" is correct, the occluded setting 0~60% means that the NI vision Assistant should find the matched pattern with occlusion 0% ~60%

Why cancel "Occluded" the result can't be found?

 

 

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Problem in configuring NI 17xx smart camera

January 7, 2018, 9:39 pm
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Dear all,

I have a problem in connecting NI 1776c smart camera with PC. Even though I gave a correct IP address of the camera in vision builder(2011), it was showing as Inconsistent IP address. Please help me out to solve this problem.

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How to detect DIP switches position

January 9, 2018, 10:47 pm
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Hi,

 

I need to detect the position of DIP switches using NI Vision Builder. The method I have tried is first to create an intensity plane, threshold the image, detect objects and measure the distance between found objects. Then I try to deduce the position of the switch based on the distance between objects.
The main problems are wrong objects detected and not all DIP switches detected. Is there any other ways or suggestions how to approach the challenge? This seems to be a tricky one.

I attached four example images and vbai which I have tried.

Any help would be appreciated.

 

Br,

Jick

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Using keypad for interfacing with CVS 1458RT

January 10, 2018, 1:10 pm
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I was having trouble finding a touchscreen monitor I liked to use for using with my CVS 1458RT, so I was wondering if it would be possible to control the front panel of a program I have loaded onto the CVS using a number keypad that plugs into the USB port, and just have a regular display monitor for my output.  The only way I have seen to be able to control knobs and things on the front panel is with a mouse, but could you possibly replace that with the arrows on a keypad?  Also, if you plugged in a keypad, would the CVS even register the keys that you are pressing correctly?  My goal with this assembly is mobility, so I would rather not have to lug out a full-size keyboard and mouse along with the camera I am interfacing my CVS with.  

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Image flickers with more than 2 cameras

January 11, 2018, 2:39 am
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Hello,

 

I have tried to search for a similar issue but didn't find any.

I'm trying to grab & record multiple cameras at the same time.

My code runs fine until I connect more than 2 USB cameras. 

 

My camera model: Logitech webcam C930e

 

The VI is attached, could someone try to help me to figure out what can cause that ? 

 

 

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Fastest way to log images to disk during acquisition

January 11, 2018, 2:52 pm
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I'm acquiring 8bit 800x600px images at 250fps continuously using the Imaq Image Acquisition Express VI. The VI is called in a loop and configured to read only the most recent frame in the buffer. I'm monitoring the loop execution time and I get at least 250 loop iterations per second. So far so good.

 

When configuring the image acquisition VI to log images to disk there's a warning about it affecting the maximum frame rate and sure enough when I enable logging I drop down to 50 loop iterations per second. So I was wondering what I can do to keep my 250fps. Data is being written to a modern SSD on 6Gbps SATA so I don't think I have a hardware bottleneck. Is there an image file format that will be faster to encode? Should I write AVIs instead of pngs? Should I manually create an image logging thread that buffers to disk (seems like a losing game if it really can only write at 1/5th the acquisition rate). Any other tricks I haven't thought of?

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NI-MAX is not able to see Embedded camera and GigE camera

January 12, 2018, 3:31 am
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Hi, 

I have problems with MAX and my GigE camera .  Is not possible to see camera into "devices and Interfaces" tree. The Camera is a Basler ace and works well with vendor's SW (Pylon5). Also Laptop's embedded camera is not shown into MAX tree . I already uninstalled all NI Drivers and Softwares (using also MSIBlast procedure as recommended me by an NI Application Eng) and then installed NI SW and drivers . I read a lot of posts but i wasn't able to solve my problems. 

My Config is : Labview2103, Vision 2013 , IMaqdx 4.3.5 , IMAQ I/O 2.9 , IMAQ 4.9 . I have a HP ProBook Laptop .

In attached what I see with MAX .

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Labview cannot detect USB Camera DMC-1213 in NI Max

January 16, 2018, 5:27 am
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Hello,

I bought a USB Camera DMC-1213 and I would like to use it to acquire images and videos through Labview. The camera comes with its own software and the driver was installed automatically in plug and play but unfortunately I can use the camera only through its own software called EZimage.

Could you please help me with a method to force Labview to recognize the USB camera?

Thanks,

Zied

 

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How to aqcuire image in MAX from FLIR A655sc without FLIR toolkit

January 17, 2018, 5:10 am
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Hi,

 

Currently i have problem to acquire photo's from the flir camera in MAX.

It is possible to see the FLIR camera in labview but it gives an error when opening.

It gives a 0xBFF69007 error "invalid device type".

Is it possible to use the FLIR camera in labview without the use of the FLIR toolkit?

The camera that i am using (FLIR A655sc) has the  GenICam and GigE Vision protocols.

(http://www.flir.com/science/display/?id=46802)

 I am using Labview 2017 (64 bit) and have the next NI packages installed

Vision development module 2017

Vision Acquisition software 17.1

NI-VISA and NI-DAQmx

 

Best regards

 

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Verifying UUT Orientation Using Vision Builder

January 17, 2018, 12:29 pm
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Hi,

I would like to implement a vision inspection system that ensures a UUT is placed under the camera at the exact orientation every time without using test fixtures. Once it's placed correctly it will run its inspection for existence of parts. What is the best way to ensure the UUT is correctly placed under the camera?

Thank you in advance!

 

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