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Hidden Letter Detection(Function) To Add #37

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@protruser

Top 3 improvements

link : https://www.komsco.com/guide/sub4.html

There are 3 hidden features in 1000 won.
It's very difficult to catch features on the camera, so I upload it as issue.

  1. Texture
    Texture is impossible to deal with in OpenCV.
    We don't have to deal with this problem.

  2. Tilting
    There are 2 features in this section.

  • Hologram
  • 'Won' letter
    Since it is difficult to distinguish even with eyes, it seems very difficult to capture features with a camera.
  1. Adjust brightness
    There are 3 feactures in this section.
  • Matching mark
  • Hidden person
  • '1000' letter

Matching mark have to be dealt with filming from multiple angles. It is impossible at once.
Hidden person appears at the left of the bill. However, brightness is very low. It may be possible, but it looks a little hard.
'1000' letter appears at the left of hidden person. This feature is much brighter than Hidden person. So we have to add detection function with it.



### Suggestions

hidden letter detection

### This issue is Regarding

Feature Request

### Agreement

- [X] I Agree

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