Title :
A new convolution structure for the realisation of the discrete cosine transform
Author :
Chan, Yuk-Hee ; Siu, Wan-chi
Author_Institution :
Dept. of Electron. Eng., Hong Kong Polytech., Kowloon, Hong Kong
Abstract :
A formulation for converting a length-N, where N=2m and m is an integer, discrete cosine transform into two length-N/2 correlations is presented. This formulation enables the authors to realize the discrete cosine transform with a reduced number of operations compared to conventional approaches, and it also results in extremely regular structure, which is most suitable for a realization using distributed arithmetic
Keywords :
correlation methods; digital arithmetic; transforms; convolution structure; discrete cosine transform; distributed arithmetic; length-N/2 correlations; regular structure; Arithmetic; Convolution; Digital signal processing; Discrete Fourier transforms; Discrete cosine transforms; Discrete transforms; Image coding; Matrix decomposition; Signal processing algorithms;
Conference_Titel :
Circuits and Systems, 1990., IEEE International Symposium on
Conference_Location :
New Orleans, LA
DOI :
10.1109/ISCAS.1990.112487