Working on overhead camera vision subsystem development

The normal vision application development process can be summarized as following diagram shown. The extended lines lead to the specific tasks I need to work on.




Currently I am trying on to develop this vision subsystem by using Matlab/Simulink toolboxes (Image acquisition toolbox, Image processing toolbox, Video and Image processing blockset)and customized code sections. Hope can figure out a way for autonomous the fish-eye distortion correction. Below is a capture of the video image that I am working on.