Does Fritz Vision work with images from my camera roll, an SD card, or a live camera preview?

Yes. Fritz Vision for iOS and Android is designed to work with any image whether it comes from a saved photo in a user’s camera roll, a storage device like an SD card, or a live preview from a built-in camera.

Even if you don’t see a tutorial or example project using the exact image type you had in mind, chances are Fritz Vision will still work for your use case.