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Efficient implementation of discrete cosine transform using recursive filter structure

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3 Author(s)
Yuk-Hee Chan ; Dept. of Electron. Eng., Hong Kong Polytech., Hong Hom, Hong Kong ; Chau, L.-P. ; Wan-Chi Siu,

We generalize a formulation for converting a length-2n discrete cosine transform into n groups of equations, then apply a novel technique for its implementation. The sizes of the groups are 2n-1 , 2n-2, ...20 respectively, while their structures are extremely regular. The realization can then be converted into recursive filter form, which is particularly simple for practical implementation

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Circuits and Systems for Video Technology, IEEE Transactions on  (Volume:4 ,  Issue: 6 )