Abstract
To provide a good quality rendering in the Image based relighting (IBL) system, tremendous reference images under various illumination conditions are needed. Therefore data compression is essential to enable interactive action. And the rendering speed is another crucial consideration for real applications. Based on Spherical wavelet transform (SWT), this paper presents a quick representation method with Integer wavelet transform (IWT) for the IBL system. It focuses on comparison on different IWTs with the Embedded zerotree wavelet (EZW) used in the IBL system. The whole compression procedure contains two major compression steps. Firstly, SWT is applied to consider the correlation among different reference images. Secondly, the SW transformed images are compressed with IWT based image compression approach. Two IWTs are used and good results are showed in the simulations.
| Original language | English |
|---|---|
| Pages (from-to) | 553-557 |
| Number of pages | 5 |
| Journal | Chinese Journal of Electronics |
| Volume | 12 |
| Issue number | 4 |
| Publication status | Published - Oct 2003 |
| Externally published | Yes |
Keywords
- Bit allocation
- Embedded zerotree wavelet
- Image based relighting
- Integer wavelet transform
- Spherical wavelet