Image and audio transform methods

Details Image and audio transform methods Image and audio transform methods

2005-09-23

2009-11-17

Hudspeth, David R (Department: 2626)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

C708S402000, C708S403000

Reexamination Certificate

active

07620675

ABSTRACT:
Inverse discrete cosine transform (type-III DCT), used in video/image and audio coding, is implemented in the form of FFT to lower computational complexity.

REFERENCES:
Narashima et al,“On the Computation of the Discrete Cosine Transform”, IEEE Trans., vol. 26, No. 6, pp. 934-936, Jun. 1978.
Vetterli, “Fast 2-D Discrete Cosine Transform”, Proc. IEEE Int. Conf. Acoustics, Speech, Signal Processing (ICASSP), vol. 10, pp. 1538-1541, 1985.
Diab et al, “A New IDCT-DFT Relationship Reducing the IDCT Computational Cost”, IEEE Trans., Signal Processing, vol. 50, No. 7, pp. 1681-1684, Jul. 2002.

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