Traditionally，projection screens like plane，cylindrical，multi-plane screens are all plane-like screens。They all need manual adjusting grids to align out pictures。 This can be a time consuming job，and may causing uneven pixel distribution problem。

uvMapp is a Camera based technique， for mapping the stage(multiple projection screens) coordinates into the scene(what we see) coordinates。With this technique，auto geometry registration and picture blending can be helpful to our technical staffs，no more handful work is needed。

uvMapp support all kinds of cameras，fish-eye camera，and you can even use your phone to take pictures for the following mapping process。In other words，you can sometime finish the most of jobs remotely。