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