| prapi::transforms::CircularHough< T, U > | Circular Hough transform |
| prapi::transforms::CircularHough< T, graphics::Point< double > > | The circular Hough transform for gradient images |
| prapi::transforms::FFT< T, U > | This class includes FastFourierTransform algoritms for 2D transforms |
| prapi::transforms::LinearHough< T, U > | Linear Hough transform |