A separable Hartley-like transform in two or more dimensions
M.G. Perkins · Proceedings of the IEEE · 1987
This letter introduces a discrete, separable, real-to-real transform, called the cas-cas transform. Theorems for the two-dimensional (2-D) case are presented, and the cas-cas transform is compared to the Hartley transform as an alternative way to convolve 2-D arrays and compute 2-D power spectra.