Name
Abstract | ||
|---|---|---|
We propose a hybrid transform that performs one-level wavelet decomposition of any image and follows it with a discrete cosine transform (DCT) in its lowpass sub-band. It shows a definite improvement over the DCT-based JPEG coder performance, in that it allows for a wider range of compression ratios (CR) over which the coder PSNR performance is good while it requires far fewer computations. We show that even though the proposed transform has similarity to sub-band DCT, it outperforms sub-band DCT at low CR and is as good as the sub-band DCT at high CR |
Year | DOI | Venue |
|---|---|---|
2001 | 10.1109/ISSPA.2001.950203 | Signal Processing and its Applications, Sixth International, Symposium. 2001 |
Keywords | Field | DocType |
data compression,discrete cosine transforms,discrete wavelet transforms,image coding,transform coding,DWT-DCT algorithm,PSNR performance,compression ratios,discrete cosine transform,hybrid transform,image compression,lowpass sub-band,one-level wavelet decomposition,wavelets | Computer science,Discrete cosine transform,Artificial intelligence,Discrete wavelet transform,Quantization (image processing),Wavelet transform,Computer vision,Lapped transform,Pattern recognition,Modified discrete cosine transform,Transform coding,Algorithm,JPEG | Conference |
Volume | ISBN | Citations |
2 | 0-7803-6703-0 | 1 |
PageRank | References | Authors |
0.41 | 1 | 2 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| How Sun Dee | 1 | 1 | 0.41 |
| Varun Jeoti | 2 | 46 | 11.34 |