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Antoine Chalons

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Posts posted by Antoine Chalons

  1. 1.) Are there quality VIs out there and I'm just not seeing them?

    2.) Is there an appetite for them?

    3.) Would anyone be interested in working (with me or otherwise) on an open-source image processing toolkit?

     

     

    1) I don't really know the answer for sure, I saw that though :http://www.ehe-lab.com/OpenCV_Wrapper.html, I admit I have no idea how openCV compares to  Cognex, Keyence, Matrox, Halcon, NI VDM, etc...

    2) NI's OCR and pattern matching are far behind the competitors, so if there is a way to integrate something that give better results I am very interested

    3) If I can be of any help I'll be glad, I have to say though that I've never coded in any other language than LabVIEW so integrating dll  into LabVIEW is not my cup of tea.

     

    Cheers

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  2. 2048*48K= 983,040,000 pixels per second. Assuming 8 bit images You're at 7.9 Gb/s which is too fast for gige but in USB3.1 range.

     

    I don't think that's the way to calculate this... the 48kHz is the max line rate, if you want 10fps with 2048 lines and 4096 columns, I'd calculate like this : 2048*4096*10/(1024*1024)=80MBytes

     

    According to this you're fine with GigE.

     

    One advice if you go with GigE and NI avoid the PCIe 8231 and 8235 and prefer the PCIe 8236 and 8233.

    We've have had a huge amount of problems with 8231 and 8235 and replacing them with 8236 or 8233 (even without using the PoE) was always a solution.

     

    NI technical support could never explain nor solve the issue and I'm still pretty bitter about this.

  3. I avoid GigE like the plague, I know lots of people go this way (even my co-workers) but I simply don't trust it. I've never had had any issues with Camera Link so I stick to that. It does add extra cost for the frame grabber, but at least I'm confident I won't have disconnection issues.

     

    USB3 seams to be the next thing for cheap application but I wouldn't jump on it too early.

    CoaXPress seams to be the high speed successor for GigE but NI doesn't support it (yet??).

  4. we've asked this from NI multiple times but they say it would be too much work to fully support reading and displaying dxf files, we came up with an compromise that was acceptable for our customers, they have to export their dxf without arcs and then we can parse the dxf files to generate overlays that we display on in IMAQ image.

    would that work for you knowing it requires the Vision Development Module licence?

  5. Hi,

     

    I did work on a similar vision application (controling glass syringes) using LabVIEW + VDM and I also used DSC, but only or the security part (user management).

    I wasn't asked anything more than a user manual to go along with my the sotware, I think the customer dealt with whatever documentation was required.

    The customer is an american company but my app is - as far as I know - only used in european factories. I also know that "they" (this american company) developed their own brew of the system and it does run in factories in the USA and it's LabVIEW + VDM, no DSC though.

     

    Hope this helps

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