基于时空特征提取的自适应搜索范围,实现有效的帧率上转换

Xiem HoangVan, D. Duong, L. T. Ha
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引用次数: 2

摘要

帧率提升转换(FRUC)由于其在提高观看质量体验和降低视频传输成本方面的优势,在近年来先进电视系统的发展中发挥着重要作用。然而,随着视频分辨率的提高,特别是从标清(SD)到高清(HD),现在要求FRUC不仅要提供更好的插值帧质量,还要提供更低的时间处理。因此,本文提出了一种基于时空特征提取的自适应搜索范围,以实现有效的FRUC。在该自适应搜索范围方案中,仔细定义并利用一组时空特征,自适应地为每个考虑的块分配适当的搜索范围值;从而直接减少了FRUC的处理时间。而且,由于可以采用最优搜索范围;插值帧的质量显著提高。对丰富的视频测试序列进行的实验结果表明,该算法在主客观图像质量提高和减少处理时间方面具有明显的优势。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Spatial — Temporal feature extraction based adaptive search range for effective frame rate up — Conversion
Frame rate up conversion (FRUC) has been playing an important role in the recent development of advanced television systems due to its benefits on both increasing the viewing quality experiences and reducing the cost of video transmission. However, with the increasing of video resolutions, notably from Standard Definition (SD) to High Definition (HD), FRUC is now asked to provide not only better interpolated frames quality but also lower time processing. Therefore, in this paper, we propose a novel spatial - temporal feature extraction based adaptive search range for effective FRUC. In the proposed adaptive search range scheme, a set of temporal and spatial features are carefully defined and exploited to adaptively assign an appropriate search range value to each considered block; thus, directly reducing the FRUC time processing. Moreover, since the optimal search range can be employed; the quality of interpolated frames is significantly improved. Experimental results conducted for a rich set of video test sequences shown the advantages of the proposed FRUC scheme, notably in both subjective objective image quality improvement and time processing reduction.
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