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* Optical Flow Test
* Ryan Hunter <rghunter@bu.edu>
* Boston University Intelligent Mechatronics Lab
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Description:

This application provides camaera de warping and feature flow. Currently, I am using a lucas-kanade implementation to provide sparse optical flow
using derived features from the goodFeaturesToTrack function and cornerSubPix for refinement.

Usage:

$ OpticalFlow <calibration_file> <input_file> <output_file>

If you do not provide an input or output file, the application uses index zero to grab a local video source and displays output on the screen.