temporary commit

Signed-off-by: ezheng <ezheng@cs.unc.edu>
This version takes all target images together, which seems to be wrong. I am going to take each image as independent

Signed-off-by: ezheng <ezheng@cs.unc.edu>
This version take each image independent. The results are good.
I am going to change the interface, so that it can work for the nvm data

Signed-off-by: ezheng <ezheng@cs.unc.edu>
This version can handle .nvm file. The stereo is not tested yet as there is not enough memory
It automatically finds the depth range [depthNear, depthFar]
I am going to change the code so that it saves some memory. Right now memory is a problem.

Signed-off-by: ezheng <ezheng@cs.unc.edu>