Unformatted text preview: many other transform that can perform similar task as DCT. However, one characteristic of the resulting spectrum after DCT is that the values of the low frequency components are usually much larger than those of the higher frequency components. This is the key to achieve higher compression rate As shown in Figure 7-10 on page 127 (textbook), the original signal can still be well approximated when a large portion of the higher frequency components are discarded. DCT are more suitable for compression than other transformations such as Discrete Fourier transform as it takes fewer components to approximate a signal....
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This note was uploaded on 11/30/2011 for the course CIS 6930 taught by Professor Staff during the Fall '08 term at University of Florida.
- Fall '08