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IMPROVED P-DOMAIN RATE CONTROL WITH ACCURATE HEADER SIZE ESTIMATION

Přednášející: Fan Zhang, Autoři: Fan Zhang, Eckehard Steinbach, Technische Universitaet Muenchen, Germany

p-domain rate control has been shown to be a simple yet effective rate control approach for DCT-based hybrid video codecs. When it is applied to H.264/AVC, improvements need to be made because of the large amount of header information and the QP-dependent Rate Distortion Optimization (RDO). In this paper, we propose a novel rate model to estimate the size of header information accurately. We present a two-stage rate control algorithm which combines the proposed header rate model and the p-domain source model. In comparison to the original p-domain rate control algorithm without header size estimation, our scheme not only improves the PSNR of the decoded video, but also achieves the target bit rates more accurately.

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  Informace o přednášce

Nahráno: 2011-05-24 16:15 - 16:35, Club A
Přidáno: 21. 6. 2011 17:21
Počet zhlédnutí: 28
Rozlišení videa: 1024x576 px, 512x288 px
Délka videa: 0:22:33
Audio stopa: MP3 [7.64 MB], 0:22:33