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In this paper, the authors proposed 2D FFT for 8x8 matrix without transpose of data by using multiple topology on 4x4 Torus. The proposed 2D FFT used parallel operation on 1D FFT and applied an effective calculation by executing a pipeline operation. They implement the proposed architecture on Xilinx Virtex-IV device and a detailed evaluation has been reported based on maximum system frequency, chip area and image size. The implementation results show that the core speed of the proposed FFT architecture is around 157.3MHz and it occupies 11733 slices. The average SQNR for various images is 61.9dB. To compare the proposed 2D FFT with other methods, they can see that frame per second is improved 8 times.
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