<human>: Question: What does a DCT do?
Answer: Other methods, such as fractal compression, matching pursuit and the use of a discrete wavelet transform (DWT) have been the subject of some research, but are typically not used in practical products (except for the use of wavelet coding as still-image coders without motion compensation).
 Is the question answered in a satisfactory fashion?

OPTIONS:
- yes
- no
<bot>: no