Bib Detection

  1. 3 months ago

    Chris H

    May 23 Pre-Release Testers, Xojo Pro, XDC Speakers Grand Rapids Michigan

    I'm trying to write some code to detect the numbers on Bibs for races.
    I've been working with MBS' OCR plugin but it's not going as well as I need.
    I think the problem is that they are very complicated scenes and not just paper through a scanner.
    When complete I'm going to want to automate it so I'll have to add a pattern recognition, eg discard "Chicago", "Exit", but keep "26016". The discard/keep is easy enough, but maybe gives you a sense of complexity of the images.

    Has anyone else tried something like this?
    Any tips or hints would be greatly appreciated.

  2. Jean-Yves P

    May 23 Pre-Release Testers, Xojo Pro Europe (France, Besançon)

    may be you should try with opencv ?

    https://github.com/ldci/OpenCV-Xojo

  3. Christian S

    May 23 Pre-Release Testers, Xojo Pro, XDC Speakers Germany

    Did you try to set the white list of characters to recognize?

  4. Chris H

    May 23 Pre-Release Testers, Xojo Pro, XDC Speakers Grand Rapids Michigan

    @ChristianSchmitz , I did.

  5. Bob K

    May 23 Pre-Release Testers, Xojo Pro Kansas City
    Edited 3 months ago

    Oh, if you contact Jim Meyer he did a wonderful presentation at XDC this year about using Machine Learning from AWS and Google to detect things on an image. I would think this would be a wonderful use of such a technology.

  6. Chris H

    May 23 Pre-Release Testers, Xojo Pro, XDC Speakers Grand Rapids Michigan

    @ChristianSchmitz I'm reading online that this engine's whitelist isn't working correctly with some versions. I don't know which your plugin uses.

    @Bob K, thanks for the suggestion. I don't know Jim. Is he in this forum?

  7. Bob K

    May 24 Pre-Release Testers, Xojo Pro Kansas City

    @Chris H @Bob K, thanks for the suggestion. I don't know Jim. Is he in this forum?

    He's a lurker and I don't think he posts a lot.

  8. Chris H

    May 31 Pre-Release Testers, Xojo Pro, XDC Speakers Grand Rapids Michigan

    OK, complete failure with MBS OCR (could be my fault), and I can't get the OpenCV example to compile.
    Other suggestions?

    There are commercial products but they require uploading everything through a web server, and with the quantity and size of the images I'll be dealing with, it's just not an option.

    I'm considering hiring a squad of high school kids to simply type them in!

  9. Bob K

    May 31 Pre-Release Testers, Xojo Pro Kansas City

    @Chris H I'm considering hiring a squad of high school kids to simply type them in!

    That's the cheaper option, no doubt.

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