-h | Help, prints usage message. |
-o | Output object file name. |
-a | Filter feed forward parameters. |
-b | Filter feed back parameters. |
-c | Filter normalization parameter. |
-P | Print filter parameters to the standard output. |
-n | Dont filter object. |
-g | Use approximate Gaussian filter. |
-d | Use Deriche filter. |
-p | Filter parameter for Gaussian (sigma) and Deriche (alpha). |
-r | Order of derivative for Gaussian and Deriche filters [0-2]. |
-t | Filter directions, eg x filter along lines and x,y filter along lines then through columns. |