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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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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
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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
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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
1984
Highly Cited
1984
A new algorithm is introduced for the 2m-point discrete cosine transform. This algorithm reduces the number of multiplications to… 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
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