Simplified Video Coding for Digital Mobile Devices
Most mobile devices are currently suffering from the lack of computational power and energy-consumption constraints,there is significant interest and research in reducing the computational complexity for fast video coding.This paper proposes a statistical model to predict the zero-quantized DCT (ZQDCT) coefficients for 3-D DCT video coding and thus to speech up the encoding process.First,each 8×8×8 pixel cube at the input of DCT is decomposed into a mean value and a residual 8×8×8 pixel cube.Subsequently,a statistical Laplacian model is mathematically developed to predict the ZQDCT coefficients.Finally,the redundant calculations for these ZQDCT coefficients are skipped.Compared to the baseline encoding method,the proposed model can significantly simplify the complexity and achieve better real-time performance at the expense of negligible visual degradation.Computational reduction also implies longer battery lifetime and energy economy for portable devices.
Jin Li Moncef Gabbouj Jarmo Takala Hexin Chen
Department of Information Technology,Tampere University of Technology,Tampere,Finland Department of Communication Engineering,Jilin University,Changchun,China
国际会议
9th International Conference on Signal Processing(第九届国际信号处理学术会议)(ICSP08)
北京
英文
2008-10-26（万方平台首次上网日期，不代表论文的发表时间）