What's the deal with the DCT? Export

@article{blinn:dct, abstract = {Discrete cosine transforms (DCTs) and discrete Fourier transforms (DFTs) are reviewed in order to determine why DCTs are more popular for image compression than the easier-to-compute DFTs. DCT-based image compression takes advantage of the fact that most images do not have much energy in the high-frequency coefficients. It is suggested that DCTs are more popular because fewer DCT coefficients than DFT coefficients are needed to get a good approximation to a typical signal, since the higher-frequency coefficients are small in magnitude and can be more crudely quantized than the low-frequency coefficients}, author = {Blinn, J. F.}, booktitle = {Computer Graphics and Applications, IEEE}, citeulike-article-id = {3024339}, citeulike-linkout-0 = {http://dx.doi.org/10.1109/38.219457}, citeulike-linkout-1 = {http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=219457}, citeulike-linkout-2 = {http://www.cs.unc.edu/~kmp/comp832-s08/readings/blinn-dct.pdf}, doi = {10.1109/38.219457}, journal = {Computer Graphics and Applications, IEEE}, keywords = {compression, cs4302, multimedia}, number = {4}, pages = {78--83}, posted-at = {2008-07-21 14:30:24}, priority = {2}, title = {What's the deal with the DCT?}, url = {http://dx.doi.org/10.1109/38.219457}, volume = {13}, year = {1993} }

TY - JOUR ID - blinn:dct L3 - citeulike-article-id:3024339 N2 - Discrete cosine transforms (DCTs) and discrete Fourier transforms (DFTs) are reviewed in order to determine why DCTs are more popular for image compression than the easier-to-compute DFTs. DCT-based image compression takes advantage of the fact that most images do not have much energy in the high-frequency coefficients. It is suggested that DCTs are more popular because fewer DCT coefficients than DFT coefficients are needed to get a good approximation to a typical signal, since the higher-frequency coefficients are small in magnitude and can be more crudely quantized than the low-frequency coefficients IS - 4 JF - Computer Graphics and Applications, IEEE EP - 83 TI - What's the deal with the DCT? VL - 13 T2 - Computer Graphics and Applications, IEEE SP - 78 KW - compression KW - cs4302 KW - multimedia AU - Blinn, JF PY - 1993/// UR - http://dx.doi.org/10.1109/38.219457 ER -