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Thread: Edge detect problem

  1. #1
      Legiazus is offline
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    Default Edge detect problem

    I have been following the tutorial here: http://forums.getpaint.net/index.php...ographers-way/ and it has been working fine. However, when I get to the edge detect part, it misses a lot of them and seems incomplete. The result is something like that shown in the attachment.

    Am I going something wrong? I want to have all the outlines.

    Thanks in advance. Legiazus out
    Attached Thumbnails Attached Thumbnails Edge detect problem-example.jpg  

  2. #2
      waldronate is offline
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    Your edge detector isn't symmetrical. I would guess that you're defining your own convolution matrix and are missing a sign. Or you're using the edge detect filter rather than Mexican Hat edge detect. The difference between the two is that Mexican Hat detects edges in all directions and edge detect only in a particular direction.

  3. #3
      Legiazus is offline
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    Default

    Aah, that makes sense. And now I come off as a real newbie - where do I find the Mexican Hat detect?

  4. #4
      waldronate is offline
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    http://www.google.com/#hl=en&source=...fd76fcf5f723ec - the first link should have it. It looks to be a user-devised plugin.

  5. #5
      Legiazus is offline
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    Thanks for the link! Again, newbie question - how do I install the plugin to Paint.NET?

  6. #6
      waldronate is offline
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    No idea, unfortunately. I'm not a Paint.NET user. However, http://www.ehow.com/how_5013787_add-...-paintnet.html has some suggestions.

  7. #7
      Legiazus is offline
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    Yup, found a tutorial and now it works just fine. Thanks for the help

  8. #8
      su_liam is offline
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    I prefer the nice omnidirectional edge-finder in photoshop, but that asymetrical edge-find looks really nice as an option.

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