Noble, B.D., Satyanarayanan, M., Narayanan, D., Tilton, J.E., Flinn, J., Walker, K.R. Agile, Application-Aware Adaptation for Mobility. In Proceedings of the 16th ACM Symposium on Operating Systems Principles. St. Malo, France, October, 1997.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....forms of image transcodings to customize an image for the prevailing network conditions or the destination target device characteristics. Fox et al. 47] used transcoding to render an image on a PDA such as Palmpilot, as well as to offset access latencies from slow modems. 19 Noble et al. [95] manipulated the JPEG Compression metric as a distillation technique for a Web browser that adapts to changing network environments. Without the ability to measure the initial Quality Factor of an image, they assumed that the original image is of JPEG Quality Factor 100 (Fidelity = 1.0) and ....

Brian D. Noble, M. Satyanarayanan, Dushyanth Narayanan, J. Eric Tilton, Jason Flinn, and Kevin R. Walker. Application-aware adaptation for mobility. In Proceedings of the 16th ACM Symposium on Operating Systems and Principles, Saint-Malo, France, October 1997.

....to the closest replica. Our work complements these systems by allowing a web service to manage its expensive network bandwidth consumption regardless of whether the object was served from the origin server or from replicas. D. Transcoding Network Proxies A number of systems such as [34] 35] [36], 37] 38] 39] 40] 1] 41] 42] 43] 44] 45] 46] have used various forms of compression and transcoding operations to improve web access from slow networks. However, those systems do not use an informed transcoding technique that can quantify the information loss from the chosen ....

Brian D. Noble, M. Satyanarayanan, Dushyanth Narayanan, J. Eric Tilton, Jason Flinn, and Kevin R. Walker, "Application-aware adaptation for mobility," in Proceedings of the 16th ACM Symposium on Operating Systems and Principles, Saint-Malo, France, October 1997.

....to 3 and 7. The end results were similar and the values that we chose better predict efficient transcodings by a slight margin. 5 Related Work Fox et al. 8] used transcoding to render an image on a PDA such as Palmpilot, as well as to offset access latencies from slow modems. Noble et al. [18] manipulated the JPEG Compression metric as a distillation technique for a web browser that adapts to changing network environments. Mazer et al. 16] describe a framework for allowing users to specify their own transcoding transducers for a application specific proxy that acts on the HTTP stream ....

B. D. Noble, M. Satyanarayanan, D. Narayanan, J. E. Tilton, J. Flinn, and K. R. Walker. Application-aware adaptation for mobility. In Proceedings of the 16th ACM Symposium on Operating Systems and Principles, SaintMalo, France, Oct 1997.

.... 80 Cumulative Energy Consumed (mWh) Picture No transcoding Always transcode (Q=25) One shot transcoding Gradual transcoding Network Battery A (CR 2016) c) Cellular connectivity CDPD Figure 8: Energy consumed by digital camera using Rangelan 2 and CDPD network A number of systems [13, 31, 32, 33] have used transcoding to fit images to the current operating environment. However, there has been little formal work in conducting a systematic study to measure the information loss associated with a given transcoding, so previous systems performed ad hoc transcoding without an explicit ....

B. D. Noble, M. Satyanarayanan, D. Narayanan, J. E. Tilton, J. Flinn, and K. R. Walker. Application-aware adaptation for mobility. In Proceedings of the 16th ACM Symposium on Operating Systems and Principles, Saint-Malo, France, Oct. 1997.

....and potential gains. Han et al. 11] present an analytical framework for determining whether to transcode and how much to transcode an image. However, their quantification does not take the image information quality into account and hence the information quality loss is not quantified. Odyssey [20] manipulated the JPEG Compression metric as a distillation technique for a web browser that adapts to changing network environments. Without the ability to measure the initial Quality factor of an image, they assumed that the original image is of JPEG Quality factor 100 (Fidelity = 1.0) and ....

NOBLE, B. D., SATYANARAYANAN, M., NARAYANAN, D., TILTON, J. E., FLINN, J., AND WALKER, K. R. Application-aware adaptation for mobility. In Proceedings of the 16th ACM Symposium on Operating Systems and Principles (Saint-Malo, France, October 1997).

....possible cost. On the other hand, consumers using high speed networks and high quality displays may desire to view the multimedia images at the highest quality. Further, consumers using slow networks want to view the images as quickly as possible. Transcoding has been used in a number of systems [3, 4, 11, 12, 26, 23, 22, 21, 19, 27, 8, 17, 1, 28] to serve the same multimedia object at different quality levels to different users. Transcoding is a transformation that converts a multimedia object from one form to another, frequently trading object fidelity for size. Some of the transcoding choices for images include color reduction, spatial ....

....various forms of image transcodings to customize an image for the prevailing network conditions or the destination target device characteristics. Fox et al. 11] used transcoding to render an image on a PDA such as Palmpilot, as well as to offset access latencies from slow modems. Noble et al. [26] manipulated the JPEG Compression metric as a distillation technique for a web browser that adapts to changing network environments. Mazer et al. 23] describe a framework for allowing users to specify their own transcoding transducers for a application specific proxy that acts on the HTTP stream ....

Brian D. Noble, M. Satyanarayanan, Dushyanth Narayanan, J. Eric Tilton, Jason Flinn, and Kevin R. Walker. Application-aware adaptation for mobility. In Proceedings of the 16th ACM Symposium on Operating Systems and Principles, Saint-Malo, France, October 1997.

No context found.

Noble, B.D., Satyanarayanan, M., Narayanan, D., Tilton, J.E., Flinn, J., Walker, K.R. Agile, Application-Aware Adaptation for Mobility. In Proceedings of the 16th ACM Symposium on Operating Systems Principles. St. Malo, France, October, 1997.

No context found.

Brian D. Noble, M. Satyanarayanan, Dushyanth Narayanan, J. Eric Tilton, Jason Flinn, and Kevin R. Walker, "Application-aware adaptation for mobility," in Proceedings of the 16th ACM Symposium on Operating Systems and Principles, Saint-Malo, France, October 1997.

No context found.

B. D. Noble, M. Satyanarayanan, D. Narayanan, J. E. Tilton, J. Flinn, and K. R. Walker, "Application-aware adaptation for mobility," in Proc. of the 16th ACM Symposium on Operating Systems and Principles, (Saint-Malo, France), Oct. 1997.

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