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Direct Computation of Type-II Discrete Hartley Transform

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4 Author(s)
Huazhong Shu ; Lab. of Image Sci. & Technol., Southeast Univ., Nanjing ; Yuan Wang ; Senhadji, L. ; Limin Luo

We present in this letter an efficient direct method for the computation of a length-N type-II generalized discrete Hartley transform (GDHT) when given two adjacent length-N/2 GDHT coefficients. The computational complexity of the proposed method is lower than that of the traditional approach for length Nges8. The arithmetic operations can be saved from 16% to 24% for N varying from 16 to 64. Furthermore, the new approach can be easily implemented

Published in:

Signal Processing Letters, IEEE  (Volume:14 ,  Issue: 5 )