The tess-two subdirectory contains tools for compiling the Tesseract and Leptonica libraries for use on the Android platform. It contains an Android library project that provides a Java API for accessing natively-compiled Tesseract and Leptonica APIs.
The eyes-two subdirectory contains a second, separate library project with additional image processing code copied from the eyes-free project. It includes native functions for text detection, blur detection, optical flow detection, and thresholding. Building eyes-two is not necessary for using the Tesseract or Leptonica APIs.
The tess-two-test subdirectory contains Android JUnit tests.