| 基于自适应选择滤波系数的插值算法 |
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| 引用本文： | 王刚,陈贺新,陈绵书. 基于自适应选择滤波系数的插值算法[J]. 吉林大学学报(信息科学版), 2017, 35(2): 111-119. DOI: 10.3969/j.issn.1671-5896.2017.02.001 |
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| 作者姓名： | 王刚 陈贺新 陈绵书 |
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| 作者单位： | 1. 吉林大学 通信工程学院, 长春 130012; 2. 白城师范学院 机械工程学院, 吉林 白城 137000 |
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| 基金项目： | 国家自然科学基金资助项目，吉林省教育厅“十三五”科学技术研究规划基金资助项目，白城师范学院重点扶持基金资助项目，白城师范学院博士扶持基金资助项目 |
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| 摘 要： | 针对不同分辨率的视频序列采用相同阶数滤波器进行分像素插值不能进一步提高编码性能的问题, 提出了基于自适应滤波器的分像素插值算法。 该算法根据设定的 3 个不同分辨率视频序列区域, 自适应选择不同阶数的插值滤波器; 在 3 个不同分辨率视频序列区域内, 根据像素间相关性将高阶插值滤波器替换为低阶插值滤波器, 实现滤波器的自适应选择。 实验结果表明, 相对于 HEVC(High Efficiency Video Coding)标准算法, 该算法使峰值信噪比值平均提高了 0. 14 dB, 比特率平均降低了 0. 37%, 对不同分辨率视频序列都具有较好的编码性能及鲁棒性。
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| 关 键 词： | 分辨率 通信技术 复杂度 自适应滤波器 高效视频编码 |
| 收稿时间： | 2016-04-13 |
Interpolation Algorithm Based on Adaptive Selection Filter Coefficients |
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| WANG Gang,CHEN Hexin,CHEN Mianshu. Interpolation Algorithm Based on Adaptive Selection Filter Coefficients[J]. Journal of Jilin University:Information Sci Ed, 2017, 35(2): 111-119. DOI: 10.3969/j.issn.1671-5896.2017.02.001 |
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| Authors: | WANG Gang CHEN Hexin CHEN Mianshu |
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| Affiliation: | 1. College of Communication Engineering, Jilin University, Changchun 130012, China;
2. School of Mechanical Engineering, Baicheng Normal College, Baicheng 137000, China |
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| Abstract: | Since the coding performance can not be further improved if the filter of same order is used to interpolate for the video sequences of different resolutions,the sub-pixel interpolation algorithm based on adaptive filter is provided.The interpolation filters of different orders can be selected automatically according to 3 given video sequences;within the video sequence area of 3 different resolution ratios,the high order interpolation filter can be replaceed by low order interpolation filter according to the correlation between pixels to realize the adaptive selection of filter.Experimental results show that compared with HEVC (High Efficiency Video Coding) standard algorithm,this algorithm improves the peak signal-to-noise ratio by 0.37dB and reduces the average bit rate by 0.37％.Therefore,this algorithm has good coding performance and robustness to different resolution video sequences. |
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| Keywords: | communication adaption filter resolution complexity high efficiency video coding(HEVC) |
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