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Discrete cosine transform

Known as: ICT, Inverse cosine transform, Fast cosine transform 
A discrete cosine transform (DCT) expresses a finite sequence of data points in terms of a sum of cosine functions oscillating at different… Expand
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Papers overview

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Highly Cited
2011
Highly Cited
2011
The discrete cosine transform (DCT), introduced by Ahmed, Natarajan and Rao, has been used in many applications of digital signal… Expand
Highly Cited
2004
Highly Cited
2004
An accurate and robust face recognition system was developed and tested. This system exploits the feature extraction capabilities… Expand
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Highly Cited
1999
Highly Cited
1999
Each discrete cosine transform (DCT) uses $N$ real basis vectors whose components are cosines. In the DCT-4, for example, the $j… Expand
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Highly Cited
1994
Highly Cited
1994
The discrete cosine transform (DCT) is a technique for converting a signal into elementary frequency components. It is widely… Expand
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Highly Cited
1992
Highly Cited
1992
Several fast algorithms for computing discrete cosine transforms (DCTs) and their inverses on multidimensional inputs of sizes… Expand
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Highly Cited
1990
Highly Cited
1990
Discrete Cosine Transform. Definitions and General Properties. DCT and Its Relations to the Karhunen-Loeve Transform. Fast… Expand
Highly Cited
1987
Highly Cited
1987
  • H. Hou
  • IEEE Trans. Acoust. Speech Signal Process.
  • 1987
  • Corpus ID: 44710299
The discrete cosine transform (DCT) is widely applied in various fields, including image data compression, because it operates… Expand
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Highly Cited
1980
Highly Cited
1980
The discrete cosine transform (DCT) of an N-point real signal is derived by taking the discrete Fourier transform (DFT) of a 2N… Expand
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Highly Cited
1977
Highly Cited
1977
A Fast Discrete Cosine Transform algorithm has been developed which provides a factor of six improvement in computational… Expand
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Highly Cited
1974
Highly Cited
1974
A discrete cosine transform (DCT) is defined and an algorithm to compute it using the fast Fourier transform is developed. It is… Expand