QQ客服 官方微博 反馈留言

	Chessboard-interpolation-based multiple description video coding
	Chen Fan ; Huijuan Cui ; Kun Tang
	2010-10-12 ; 2010-10-12
关键词	Theoretical or Mathematical/ discrete cosine transforms image enhancement image reconstruction interpolation motion compensation video coding video communication/ chessboard interpolation video transmission multiple description video coding algorithm discrete cosine transform motion compensation video codec image quality reconstruction bidirectional video communication drift control scheme error concealment action decoder redundancy-rate-distortion simulation result single description coding/ B6135C Image and video coding B0290X Integral transforms in numerical analysis B0290F Interpolation and function approximation (numerical analysis) C5260D Video signal processing C4188 Integral transforms in numerical analysis C4130 Interpolation and function approximation (numerical analysis)
中文摘要	To enhance the robustness of video transmission over noisy channels, this paper presents a multiple description video coding algorithm based on chessboard-interpolation. In the algorithm, the input image is decomposed according to the chessboard pattern, and then interpolated to produce two approximate images with the same resolution. Consequently, the state-of-the-art DCT+MC (discrete cosine transform + motion compensation) video codec is independently applied to the two approximate images to generate two descriptions of the original image. In this framework, a fairely good reconstructed is obtained when two descriptions are received simultaneously, while an acceptable reconstructed image quality could be yielded if only one description is available. Moreover, the mismatch between the encoder and the decoder could be effectively controlled through partial coding of the difference signal between two descriptions. In bidirectional video communications, a drift control scheme is further proposed, in which the error drift could be eliminated after the encoder imitating the error concealment actions of the decoder. Since the inherent correlation among adjacent blocks of DCT+MC video coding is efficiently exploited, this algorithm has a better redundancy-rate-distortion (RRD) performance than other multiple description algorithms. Simulation results show that the proposed algorithm is fairly robust while preserves a high compression rate. A more constant reconstructed image quality is achieved over extremely noisy channels, compared with traditional single description coding. In addition, it is observed that the mismatch and the error drift are effectively controlled.
语种	英语
出版者	SP Science in China Press ; Germany
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/82433]
专题	清华大学
推荐引用方式 GB/T 7714	Chen Fan,Huijuan Cui,Kun Tang. Chessboard-interpolation-based multiple description video coding[J],2010, 2010.
APA	Chen Fan,Huijuan Cui,&Kun Tang.(2010).Chessboard-interpolation-based multiple description video coding..
MLA	Chen Fan,et al."Chessboard-interpolation-based multiple description video coding".(2010).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。