cuda 2d correlation

does anybody know if there is a 2d normalized cross correlation implemented on CUDA. I mean any kind of source code or package easy to port. I will use the implementation to do 2D motion tracking. Thanks.

does anybody know if there is a 2d normalized cross correlation implemented on CUDA. I mean any kind of source code or package easy to port. I will use the implementation to do 2D motion tracking. Thanks.