Verscheure O., Basso A., El-Maliki M. and Hubaux J.-P. Perceptual Bit Allocation for MPEG-2 CBR Video Coding. In Proceedings of the International Conference on Image Processing, Lausanne, Switzerland, September 1996  Home/Search   Document Details and Download   Summary   Related Articles   Check

....involving video transmission in particular, like videoconference and video on demand) both with and without real time encoding could offer enough quantitative flexibility in resource demands, to make these connections, in some extent, charge dependent. Experiences on perceptual quality metrics ([21], 22] show that considerable gain in bandwidth allocation could be obtained while resulting in minimum degradation of quality at user s perception. That means the application would be willing to accept quantitative degradation, if and only if the connection do not suffer qualitative degradation. ....

O. Verscheure & al., Perceptual Bit Allocation for MPEG-2 CBR Video Coding, Int. Conference on Image Processing (ICIP), Lausanne, Switzerland, (Sep. 1996).

....perceive an improvement in quality after a certain bit rate. However, such a saturation of quality is not well captured by the PSNR. The average bit rate after which the quality does not significantly increase may be shifted to the left by means, for instance, of an adaptive quantization scheme [Ver96] Indeed, adaptive quantization aims at spatially uniformizing the coding noise by adjusting the MQUANT value on a macroblock basis. Therefore, the same perceptual quality may be reached at a lower average bit rate. 6.1.2 Data Loss Impact on Video Quality Up to this point, we did not consider ....

Verscheure O., Basso A., El-Maliki M. and Hubaux J.-P. Perceptual Bit Allocation for MPEG-2 CBR Video Coding. In Proceedings of the International Conference on Image Processing, Lausanne, Switzerland, September 1996.

....perceive an improvement in quality after a certain bit rate. However, such a saturation of quality is not well captured by the PSNR. The average bit rate after which the quality does not significantly increase may be shifted to the left by means, for instance, of an adaptive quantization scheme [Ver96] Indeed, adaptive quantization aims at spatially uniformizing the coding noise by adjusting the MQUANT value on a macroblock basis. Therefore, the same perceptual quality may be reached at a lower average bit rate. 6.1.2 Data Loss Impact on Video Quality Up to this point, we did not consider ....

Verscheure O., Basso A., El-Maliki M. and Hubaux J.-P. Perceptual Bit Allocation for MPEG-2 CBR Video Coding. In Proceedings of the International Conference on Image Processing, Lausanne, Switzerland, September 1996.

.... video quality metric (i.e. a quality metric based on a complete spatio temporal model of the human visual system (van den Branden Lambrecht, et al. 1996) This introduction of the vision science knowledge into the video coding and transmission domain may lead to very interesting results (Verscheure, et al., 1996a b) Garcia, et al. 1996) The existing QoS mapping schemes, essentially those described in (Nahrstedt, et al. 1996) and (Coulson, et al. 1995) do not address this issue. In this paper, we essentially intend to bridge the results from (Nahrstedt, et al. 1996) and (Coulson, et al. 1995) ....

....processing devices, a medium QoS controller, and some mechanisms. We believe that four main groups of mechanisms may be designed in order to control the encoding process of a video source: the rate control, the quality control, the robustness and the tools based on psychophysics groups (see (Verscheure, et al., 1996b) for examples) The rate control mechanism group aims at regulating the encoded video stream in order to produce either a constant or a controlled variable bit rate stream. This group of ApplicationLayer AL Controller Application is synchronized Medium String serviceType AL QoS ....

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Verscheure, O., Basso, A., El-Maliki, M., and Hubaux, J.-P. (Sept. 1996-a) Perceptual Bit Allocation for MPEG-2 CBR Video Coding. International Conference on Image Processing (ICIP), Lausanne, Switzerland.

.... the user perspective thanks to a perceptual video quality metric (i.e. a quality metric based on a complete spatio temporal model of the human visual system [1] This introduction of the vision science knowledge into the video coding and transmission domain may lead to very interesting results [2,3,4]. The existing QoS mapping schemes, essentially those described in [5] 6] and [7] do not address this issue. In this paper, we essentially intend to bridge the results from [5] 6] and [7] with studies carried out in both the vision science and video coding areas in order to build up an ....

Verscheure, O., Basso, A., El-Maliki, M., and Hubaux, J.-P, Perceptual Bit Allocation for MPEG-2 CBR Video Coding. In Proc. of the International Conference on Image Processing (ICIP), Lausanne, Switzerland, September 1996.

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Verscheure O., Basso A., El-Maliki M. and Hubaux J.-P. Perceptual Bit Allocation for MPEG-2 CBR Video Coding. In Proceedings of the International Conference on Image Processing, Lausanne, Switzerland, September 1996

No context found.

O. Verscheure, A. Basso, M. E1-Maliki, and J.P. Hubaux. Perceptual bit allocation for MPEG-2 CBR video coding. In International Conference on Image Processing (ICIP), September 1996. Lausanne (Switzerland).

No context found.

O. Verscheure, A. Basso, M. El-Maliki, and J.P. Hubaux. Perceptual bit allocation for MPEG-2 CBR video coding. In International Conference on Image Processing (ICIP), September 1996. Lausanne (Switzerland).

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