Constant quality JPEG2000 rate control for digital cinema An uncompressed Digital Cinema Distribution Master (DCDM) image typically has dimensions of up to 4096x2160 (4K) or 2048x1080 (2K) with 12bit pixel data for each of the Xu0027Yu0027Zu0027 color planes. At a frame rate of 24 frames per second, this gives uncompressed data rates of 7.6 and 1.9 Gbps for 4K and 2K respectively. Even after compression, average data rates in the hundreds of Mbitssec. are encountered. Recently, the Society of Motion Picture and Television Engineersu0027 (SMPTE) has chosen JPEG2000 as the standard to be used for digital cinema compression. Thus, methods to appropriately trade off rate and quality for JPEG2000compressed movies will have high importance in the next several years as systems are designed and deployed. In this paper we describe a new distortionbased framework for rate control that enables a JPEG2000 encoder to achieve a userspecified quality, and therefore makes it possible to produce constant quality from frametoframe in an image sequence. The new method makes direct use of the same JPEG2000 coding pass data as the traditional approaches, and thus can easily be adopted at the back end of JPEG2000 encoding engines. We compare the new method with two other common rate control techniques for JPEG2000.

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.