基于自适应预选的快速帧间模式选择算法
发布时间：2018-08-26 21:29
【摘要】：针对率失真性能和算法复杂度约束,提出基于偏移量自适应模式预选的高效帧间模式选择算法.计算所有可能模式率失真优化关闭判据下的编码代价,对代价进行自适应偏移量调整.基于调整后的代价进行模式预选,选择几种性能可能较优的候选模式,对这些模式进行率失真优化模式选择.由于该算法采用统计分析建模方法,自适应地确定偏移量参数,显著提高了模式预选准确率,较好地平衡了复杂度和算法性能.针对典型视频测试序列进行算法验证.实验表明,与完全率失真优化模式选择算法相比,该算法的复杂度大大降低,视频质量仅存在轻微退化.
[Abstract]:An efficient inter-frame mode selection algorithm based on offset adaptive mode pre-selection is proposed for rate-distortion performance and algorithm complexity constraints. The coding cost under the optimal closure criterion of the possible mode rate-distortion is calculated and the cost is adjusted by adaptive offset. Based on the adjusted cost, several candidate modes are selected, and the rate-distortion optimization modes are selected for these modes. Due to the statistical analysis and modeling method, the algorithm adaptively determines the offset parameters, which improves the accuracy of pattern pre-selection and balances the complexity and performance of the algorithm. The algorithm is validated for typical video test sequences. The experimental results show that compared with the perfect rate-distortion optimal mode selection algorithm, the complexity of the algorithm is greatly reduced, and the video quality is only slightly degraded.
【作者单位】： 中国计量学院信息工程学院;
【基金】：浙江省自然科学基金资助项目(Y1110114,LY12F05007,LY12F01011,LY13H180011) 国家“十二五”科技支撑计划资助项目(2013BAH54F04)
【分类号】：TN919.81
本文编号：2206215
[Abstract]:An efficient inter-frame mode selection algorithm based on offset adaptive mode pre-selection is proposed for rate-distortion performance and algorithm complexity constraints. The coding cost under the optimal closure criterion of the possible mode rate-distortion is calculated and the cost is adjusted by adaptive offset. Based on the adjusted cost, several candidate modes are selected, and the rate-distortion optimization modes are selected for these modes. Due to the statistical analysis and modeling method, the algorithm adaptively determines the offset parameters, which improves the accuracy of pattern pre-selection and balances the complexity and performance of the algorithm. The algorithm is validated for typical video test sequences. The experimental results show that compared with the perfect rate-distortion optimal mode selection algorithm, the complexity of the algorithm is greatly reduced, and the video quality is only slightly degraded.
【作者单位】： 中国计量学院信息工程学院;
【基金】：浙江省自然科学基金资助项目(Y1110114,LY12F05007,LY12F01011,LY13H180011) 国家“十二五”科技支撑计划资助项目(2013BAH54F04)
【分类号】：TN919.81
【共引文献】
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