How to measure in real world coordinates (Cognex)

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  • Опубліковано 18 лис 2024

КОМЕНТАРІ • 9

  • @nguyentung6862
    @nguyentung6862 4 роки тому +1

    Hi Landel Tech 1
    I would like to have a question: what is the difference between calibration by a file from your computer and calibration by live video. Will dimention of object be changing significantly ?

    • @nguyentung6862
      @nguyentung6862 4 роки тому

      calibration by live video means when we use check board for calibration

    • @landeltech1240
      @landeltech1240  4 роки тому

      They are the same. You can take the calibration cell structure and save it as a file on the computer then import it into a different inspection. As long as the physical setup doesn't move the calibration will still be valid.

    • @landeltech1240
      @landeltech1240  4 роки тому

      I'm not calibrating with a computer. Just importing an already saved calibration into a new spreadsheet.
      Does this answer your question?

  • @marcol5374
    @marcol5374 3 роки тому

    Thanks for the video. Is mandatory print the grid ?

    • @landeltech1240
      @landeltech1240  3 роки тому +1

      For the most part, yes. The intersections are what the camera uses to calibrate itself. If you can't use a grid there are other methods such as point calibration. I may have done a video on that.

    • @marcol5374
      @marcol5374 3 роки тому

      ​@@landeltech1240 Thanks for the answer. I was hoping not to have to glue the grid to the piece but if is mandatory i will do it. And another question :
      if I have the camera at 45 degrees with respect to the piece, does something change for the calibration?

    • @landeltech1240
      @landeltech1240  3 роки тому +1

      I glued the grid to a piece of cardboard.
      Process doesn't change for a 45 degree tilt.

  • @marcol5374
    @marcol5374 3 роки тому

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