Theoretical distortion estimation in L-infinite wavelet-based coding of semi-regular meshes
Subdivision-based wavelet coding techniques yield state-of-the-art performance in scalable compression of semi-regular meshes. However, all these codecs make use of the L-2 distortion metric, which gives only a good approximation of the global error produced by lossy coding of the wavelet coefficien...
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| Vydáno v: | 2012 Proceedings of the 20th European Signal Processing Conference (EUSIPCO) s. 764 - 768 |
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| Hlavní autoři: | , , , , |
| Médium: | Konferenční příspěvek |
| Jazyk: | angličtina |
| Vydáno: |
IEEE
01.08.2012
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| Témata: | |
| ISBN: | 1467310689, 9781467310680 |
| ISSN: | 2219-5491, 2219-5491 |
| On-line přístup: | Získat plný text |
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| Shrnutí: | Subdivision-based wavelet coding techniques yield state-of-the-art performance in scalable compression of semi-regular meshes. However, all these codecs make use of the L-2 distortion metric, which gives only a good approximation of the global error produced by lossy coding of the wavelet coefficients. The L-infinite metric has been proven to be a suitable metric for applications where controlling the local, maximum error on each vertex is of critical importance. In this context, an upper bound formulation for the L-infinite distortion for a wavelet-based coding scheme operating on semi-regular meshes is derived. In addition, we propose a rate-distortion optimization algorithm that minimizes the rate for any target L-infinite distortion. It is shown that our L-infinite coding system outperforms the state-of-the-art and that an L-2 driven coding approach for semi-regular meshes loses ground to its L-infinite driven version when the goal is to have a tight control on the local reconstruction error. |
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| ISBN: | 1467310689 9781467310680 |
| ISSN: | 2219-5491 2219-5491 |