Re-vision exit ladder assist

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• A question about 'value spots' in the Vision Assistant of NOR

  Hello, all,.

  I am a new learner or vision.

  When I use 'mark set' in the Vision Assistant of NOR. It works well. for example

  

  (The image above is the example in the Vision Assistant of NOR, please see help > Assistant Solution > Inspection of dental floss)

  However, when I put the program NI Vision Assistant to create a Labview VI program. (Tools > create a LabVIEW VI), then run the VI, it no longer works.

  

  The result of the system of coordinates outside is always like that.

  

  I can't find where is the error. I tried a few other examples in the Vision Assistant of NOR. If the command "set mark" is used in the program in the Vision Assistant of NOR. then create the LabVIEW VI.

  The problem still occurs.

  I hope some man experienced in NI Vision could help me.

  Thank you.

  Hi all

  This problem has been reported under Corrective Action Request (CAR) 441410 and has since been fixed in 2014 of VDM. I highly recommend upgrading to the latest version here: www.ni.com/download/vision-development-module-2014-f1/4971/en/ because it contains other patches. If you are unable to do so, I have attached the patched file, you need to change. Replace the following file (assuming that the default installation location): \National Instruments\LabVIEW 2013\vi.lib\vision\Vision Utils.llb Assistant with the version I have attached here, and that should solve the problem you see with NaN values of reference in the VG of the generated code.

  Kind regards

  Joseph

• matter of timing in a signal to simulate (exit DaqAssistant)

  Hi, I was working on a wave form simulating the box to exit DAQ Assistant (try to generate the sinusoidal waveform amplifier)

  and... for some reason, I can't run my program

  I thought that if I put the DAQ assistant to be "On Demand" should be all he gets:)

  the error message says, that there are some problems with the sampling frequency,

  I am attaching some pictures, please help me:)

  

  Lol at the request is not that at all. How to take a single (scalar) value and write request. It does not accept a waveform. You do not use N samples or continuous

• Audible clicks of noise generation/acquisition vi

  Hey everybody!

  Fast facts:

  I'm doing a vi to perform measurements of room acoustics.  The goal is to apply white noise octave band filtered in a room until a level of balance is reached, then turn off the sound source and measure the decay of the sound field in the room.  So, my vi generates white noise, filter by octave specified parameters, at the same time sends the output and begins data acquisition using DAQ assistant 2 blocks (both caused by an external function generator).  I put the exit exit DAQ assistant N samples (same number as generated by the simulation signal block) and the acquisition of input data is set to acquire more samples that block signalling simulation generates so that I continue to acquire the signal after speaker cuts wide and measure the sound field decomposition in the room.

  The problem:

  The vi works perfectly except that when the speaker pauses at the end of the N samples is a notable very audible click, which must correspond to a kind of tip in the single output at the end of my example output N.  It is a big problem because it will change my measurements of the disintegration of his field. (see Appendix 1 for a screenshot of my vi)

  I tried unsuccessfully to solutions:

  (1) I thought that the click can be caused by sharply cutting the signal of excitement, so I tried to insert a block window to give a smooth envelope at the beginning and end of my signal.  The envelope fainted at the volume at well, but there was still a noticeable click and the end of the exit (after closing fade).

  (2) I tried to zero-pad to the end of the signal, thinking that I might be able to output a signal of amplitude zero while I measure the decay curve and I hope to delay the inevitable apparently, then click on until I have capture my data.  However, when I do this, my production Assistant DAQ gives me an error that the sample rate is 1 and the valid range of sampling frequencies are 800 1000 to 204.  Apparently the DAQ output is sent a single sample of my table of output data.  (see 2nd screenshot below)

  I'm really puzzled, so any help would be greatly appreciated.  Be it a way to correctly implement my solution #2 from above, a new method to get rid or delay the click, or if someone can point me to an existing vi that will perform the functions of noise-excitation/acquisition that I need.

  FYI, the material is a PXI-4461.

  Thanks in advance!

  Michael K

  Here's the code to 9.0. As I said I have not tested, because I have no data on this PC acquisition unit

• Show model on caterpillars

  Hello, I use acquisition of vision and mink assistant in labview and a webcam to detect a pattern

  I was able to detect the object and to follow, vision assistant gives me the coordinates X and Y of the object followed at every moment, but I have seen in some videos that appears a red square and surrounds the detected object so how can do this?

  Hello

  You can use 'draw the pattern position.vi matches ". Please see the attached code. If you use special criteria, you can use it directly, otherwise you can create an array of clusters.

  Best regards

  K

• Fix missing for EBS R12.2 quick installation?

  Hi all

  EBS R12.2.4

  RHEL 6.5

  An Oracle Consultant installed the VISION instance to Assistant Rapid aid for our demonstration tests.

  After that, I was task to install the instance of CRP to help Assistant Rapid to start at our facility to the CRP/test.

  To my dismay, some functional test gets the error in CRP but runs well in the VISION.

  I think I have missed a few major patches or applied the wrong patch when installing apps?

  How can I check which patch is missing or poorly implemented, by comparing the two instance?

  In comparison, there are ins invalid objects CRP which is VISION valid example is the package APPS. IBY_VALIDATIONSETS_PUB

  The cause is the incompatible table IBY_DOCS_PAYABLE_VAL_GT of the CRP and the Vision which have different structures. There are some missing columns in CRP:

  INT_BANK_BRANCH_TYPE
  EXT_BANK_BRANCH_TYPE

  Please help how to find the patch that will fix these inconsistencies of table.

  Thank you very much

  JC

  I don't know how to continue without instruction, like another note asking to apply this hotfix. I would try to apply the fix in normal mode (when I have no time constraints)

  Want to logging than an SR can help solve the problem more quickly.

  It's interesting too https://blogs.oracle.com/stevenChan/entry/ten_ways_of_using_isetup_to_st

  Have not worked on it yet, but your comparison question sparked an interest for ways to compare the instances

• vision assistant problem

  Hi all

  I use my Vision assistant (2015, 64 bit, build 20150612021331) for the batch of treatment on several images in the browser. Ok.

  But for that matter, as he returned after the batch script to change by doubling (copy - paste) a bunch of "VIbox"... randomly.

  This bug reproduces very well on another PC too.

  Any hint?

  Stones

  This bug has been fixed in Vision Development Module 2015 SP1 (CAR 567565).

  Please consider upgrading to this version.

• Different methods to find a form of rectangle Center and rotation in vision assistant

  Hi This is my first shot at the machine vision and Vision Assistant tool. I am trying to find a rectangle shape in an image and determine its Center and rotation around the Center. I started with this image:

  

  and I increased saturation and contrast to make a clearer target area:

  

  I am interested in the main red rectangle turned about 5 degrees to the right. For me, it seems that there is enough contrast edges, but quickly, I tried some of the edge (including the rake) detection and pattern matching algorithms and I don't get any useful results. Maybe it's the white lines don't interfere. I tried to extract just the plan of the red color but as white also contains red these lines always appear.

  I'm hoping to get some ideas for different approaches get precisely the Center and the rotation of this part, as well as the guidance you need to succeed. Thanks for the tips!

  I would try to extract the rectangle using color thresholding.  Analysis of particles of use on the rectangular blob and you should be able to get a rotation value.

  Bruce

• Bend contour (assistant vs labview vision)

  Hello

  In the Vision Assistant, if I use 'Analysis of Contour' and click on "Curvature of the computer", there is a table below that show x, position y as the value of the curvature.

  When I'm in LabVIEW, there is only a table out of the function of curvature Compute... There is no relationship with the x, position y of the curve.

  How can I match x, y of the curve with curvature value?

  Thank you

  Patrick

  If you generate the code in the Vision Assistant, you'll see that a few screws are called to calculate the curvature:

  -IMAQ from Contour, which retrieves the outline of your object. That VI returns the points of the outline you want to.

  -IMAQ overlay Contour allows to superimpose the outline on the image.

  -Finally, bend to calculate IMAQ is used to calculate the curvature at each point of the contour.

  The curvature profile returned by this VI table has the same number of points as the Points of Contour table returned by IMAQ extract of outline.

  The indices of these 2 tables match.

  I hope this helps.

  Christophe

• Vision Assistant has theAlgorithms.Resample feature

  I'm just not see it, or is there no way to resize (Resample) an image in Vision Assistant?

  It seems to me that the resizing of an image is one of the simplest function of image processing.

  I'm used to having to open images in MS Paint to resize, and then reoppen in the Vision Assistant.

  I created a VI resampling that works. But I just thought that it would be part of the core functionality.

  Yes, the function of resampling in Vision Assistant is in the first tab (processing of functions: Image). Select the step of geometry, and Resampling.

• vision Assistant

  Hi, would you please tell me what can I do with this PIN 'Image In "? It is purple

  I tried a lot of experience, but the vision assistant insist to grab me something to this 'Image In' purple

  I tried to create the path of file (green color), I gave him the path, but it did not work without "the image in.

  I am very new to the vision, it is perhaps a trivial question, but the help file didn't help me a lot.

  Thanks for your help.

  That's what you want
  just take care about format if your need for RGB code change grayscale in RGB

• Advancing the Straight Edge configuration in the Vision Assistant

  Hello world

  I used the function advance Straight Edge with Vision Assistant who I little understand but this is not enough for what I'm trying to achieve. I tried to find some info on the underlying theory, but the only thing I found is the help document for it, which provides details on the different variables only.

  Could you please tell me where I could find a good source of information on edge configurations right ahead?

  Thank you  

  Take a look at the NIVisionConcepts.chm you could find under ...\National Instruments\Vision\Documentation.

  

  Christian

• Characteristics of vision assistant

  I was wondering if someone could tell me how to change an image´s brightness, contrast and histogram with vision assistant. I want to do this, in order to normalize the image and reduce the impact of the light on the image. I m of the system development will always illuminating, but I Don t want to get the results to change so dramatically with just a little change in illumination.

  Can someone help me please?

  Thanks in advance!

  There is a direct function under image - brightness.  You can adjust the brightness, contrast and gamma. If you want to go check dynamic table of choice

• Using the thresholds the in Vision Assistant Image calibration

  

  I would like to form images of calibration with some images of 1280 x 720 of grids that I take with a fisheye lens. Usually, when I raise Calibration training Vision Assistant interface, I have some tools really powerful local thresholding as in the screenshot above.

  But with images that I put in now, I'm threshold options that aren't really my needs. These are shown in the screenshot below. Is it possible to manually choose the local threshold options?

  

  Hello

  You got this window because it seems that you have a 32 bit image instead of an image of grayscale 16 or 8-bit.

  Convert your image into 8-bit, and you'll have the threshold parameters you need.

  Hope this helps

  Agress

• Detect dirt on a picture of the camera with Vision Assistant

  Hello

  I want to test a camerachip cleanliness.

  I tried to make a detector of dirt for a camera with Vision Assistant 2011 SP1 image.

  I modified the cell analysis of the Solution Wizard.

  My Vision Script is not able to detect any dirt pirate on the camera Image.

  Maybe you tips to optimize my other scrip alternative.

  You can use "Equalize IMAQ" (could be found in the service Table of the Vision Assistant research) right after you open the image to spread the histogramm on any bit depth.

  Christian