help me with my project in augmented reality

hi i m doing a project in augmented reallity in android. It has got 4 modules 1. Marker generation - This module generates marker in which specific data is encoded. 2. Marker detection - This module recognises the marker and decodes the data and examine the object to be displayed. 3. Object overlay - This module generates the 3-D object or vedio over the corresponding detected marker. 4. Object orientation and rendering - This module detects the orientation of mobile device and render the image according to orientation. can you please help me to create a data flow diagram? please say the how and what data is flowing in each module