title: Pattern recognition for static images in Android (eg cards, vouchers etc.)
body: <p>I want to implement pattern recognition mechanism in Android. The use case is: You take the camera and scan "our specific company member card". This card has some individual patterns on it, like a red stripe. Another use case is scanning a specific voucher that has some visual fixed patterns as well.
  I want the camera to detect that card or voucher by the visual patterns. No OCR.</p>
  
  <p>Is there a suitable framework for Android you can recommend? Since that cards are not known by Google and for privacy reasons we don't want to use Cloud service providers. All I found are SDKs that use Cloud services or do not match the pattern recognition of my individual images.</p>