L0 norm restricted LIC with ADMM
L0 norm restricted LIC with ADMM
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DOI：
10.1109/iwait.2018.8369768
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
Shohei Kubota;Ryoichiro Yoshida;Y. Kuroki
中科院分区：
文献类型：
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作者：
Shohei Kubota;Ryoichiro Yoshida;Y. Kuroki
LIC（局部强度补偿）是视频编码的框架内运动补偿，并且是HEVC的候选人。为了获得线性组合中的参考块及其系数，Inoue等。已将AHIT应用于求解器（加速了硬迭代阈值）。但是，这种算法是启发式的。然后，本文建议使用复杂的凸优化求解器AMPM（乘数的交替方向方法）。实验结果表明，与常规方法相比，我们的方法在相同的参考块数字中提供了更高的PSNR值。
LIC (Local Intensity Compensation) is an intra-frame motion compensation for video coding, and was a candidate for HEVC. To obtain reference blocks and their coefficients in linear combination, Inoue et al. have applied AHIT (Accelerated Hard Iterative Thresholding) as a solver. However, this algorithm is heuristic; then, this paper proposes to use a sophisticated convex optimization solver ADMM (Alternating Direction Method of Multipliers). Experimental results demonstrate that our method provides higher PSNR values in the same reference block numbers than the conventional method.