一种基于非线性变换的模拟视频传输框架
A nonlinear transform based analog video transmission framework
摘要:
针对数字视频传输的不足,提出了一种跨层的无线视频传输方案软播,即采用门限传输框架达到同样的效果。具体来说,在编码器中,我们对变换后的系数进行功率分配,并根据新的功率失真公式对系数进行编码。在译码器中,对最小二乘估计器的估计过程进行了改进。伴随着逆非线性变换,DCT系数可以恢复取决于缩放因子,LLSE估计器系数和元数据。实验结果表明,在相同的带宽和总功率下,该框架的PSNR优于软播1.08 dB,MSSIM增益达到2.35%。
英文摘要:
Soft-cast, a cross-layer design for wireless video transmission, is proposed to solve the drawbacks of digital video transmission: threshold transmission framework achieving the same effect. Specifically, in encoder, we carry out power allocation on the transformed coefficients and encode the coefficients based on the new formulation of power distortion. In decoder, the process of LLSE estimator is also improved. Accompanied with the inverse nonlinear transform, DCT coefficients can be recovered depending on the scaling factors , LLSE estimator coefficients and metadata. Experiment results show that our proposed framework outperforms the Soft-cast in PSNR 1.08 dB and the MSSIM gain reaches to 2.35% when transmitting under the same bandwidth and total power.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。