From 319f0c8e228562f603963a72e4a0da3d27fd6dcd Mon Sep 17 00:00:00 2001 From: chris-langfield Date: Wed, 24 Apr 2024 22:53:22 -0400 Subject: [PATCH] add second paper --- README.md | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/README.md b/README.md index ad15a4d..afdb007 100644 --- a/README.md +++ b/README.md @@ -1,5 +1,7 @@ A Python package aiming to provide an easy and efficient interface to various implementations of the [Hexagonal Fast Fourier Transform](https://en.wikipedia.org/wiki/Hexagonal_fast_Fourier_transform). The purpose of the software is primarily educational with a goal of eventually reaching production quality. -For now the `fft()` and `ifft()` methods implement the HFFT algorithm due to Mersereau in +For now the `fft()` and `ifft()` methods implement HFFT described in the following papers: > R. M. Mersereau, "The processing of hexagonally sampled two-dimensional signals," in Proceedings of the IEEE, vol. 67, no. 6, pp. 930-949, June 1979, doi: 10.1109/PROC.1979.11356 + +> Ehrhardt, J. C. (1993). Hexagonal fast Fourier transform with rectangular output. In IEEE Transactions on Signal Processing (Vol. 41, Issue 3, pp. 1469–1472). Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/78.205759