Radix-2 × 2 × 2 algorithm for the 3-D discrete Hartley transform

@article{Boussakta2001Radix22,
  title={Radix-2 × 2 × 2 algorithm for the 3-D discrete Hartley transform},
  author={Said Boussakta and Osama Alshibami and Mohammed Aziz},
  journal={IEEE Trans. Signal Process.},
  year={2001},
  volume={49},
  pages={3145-3156}
}
The discrete Hartley transform (DHT) has proved to be a valuable tool in digital signal/image processing and communications and has also attracted research interests in many multidimensional applications. Although many fast algorithms have been developed for the calculation of one- and two-dimensional (1-D and 2-D) DHT, the development of multidimensional algorithms in three and more dimensions is still unexplored and has not been given similar attention; hence, the multidimensional Hartley… 
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