Scalable internet video streaming with differential JPEG2000 video codec and contentaware rate control A scalable video streaming system that includes video preprocessing, differential JPEG2000 (DJ2K) video codec, and contentaware rate control is proposed. The proposed streaming solution tackles the problem of maintaining smooth video quality even when there is a significant change in the source content or the transmission bandwidth. The waveletbased JPEG2000 video codec provides temporal, spatial and SNR scalabilities. A rate controller, which is separated from the encoder, can deal with diverse demands of a wide variety of users and various traffic conditions in a heterogeneous network by leveraging offerred scalabilities and contentawareness. Simulations are conducted to demonstrate various advantages of the proposed solution.

Impact of rate control tools on very fast nonembedded wavelet image encoders Recently, there has been an increasing interest in the design of very fast wavelet image encoders focused on applications (interactive realtime imageu0026video applications, GIS systems, etc) and devices (digital cameras, mobile phones, PDAs, etc) where coding delay andor available computing resources (working memory and power processing) are critical for proper operation. Most of these fast wavelet image encoders are nonembedded in order to reduce complexity, so no rate control tools are available for scalable coding applications. In this work, we analyze the impact of simple rate control tools for these encoders in order to determine if the inclusion of rate control functionality is worth enough with respect to popular embedded encoders like SPIHT and JPEG2000. We perform the study by adding rate control to the nonembedded LTW encoder, showing that the increase in complexity still maintains LTW competitive with respect SPIHT and JPEG2000 in terms of RD performance, coding delay and memory consumption.