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Prime factor algorithm for multidimensional discrete cosine transform

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3 Author(s)
Guoan Bi ; Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore ; Yonghong Zeng ; Yan Qiu Chen

A prime factor fast algorithm is proposed for the computation of the multidimensional forward and inverse discrete cosine transform (DCT). By using an example of a two-dimensional (2-D) DCT, it shows that an r-dimensional DCT can be obtained from a 2r dimensional DCT with a post-processing stage, efficient method for input/output mapping is reported to substantially reduce the computational overhead associated with the prime factor algorithm

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Signal Processing, IEEE Transactions on  (Volume:49 ,  Issue: 9 )