Deprecated: The Mobile Vision API is now a part of ML Kit: Check out this repo:
Android SDK for the Microsoft Computer Vision API, part of Cognitive Services.
Text recognition for Android app using Google Mobile Vision API
Sample Anroid app for image classification using a TensorFlow model exported from Microsoft Cognitive Services Custom Vision
Fast computer vision library for SFM, calibration, fiducials, tracking, image processing, and more.
Demonstration of BoofCV for Android devices