A Study on Video Generation Based on High-Density Temporal Sampling

Yukihiro BANDOH  Seishi TAKAMURA  Atsushi SHIMIZU  

Publication
IEICE TRANSACTIONS on Information and Systems   Vol.E100-D   No.9   pp.2044-2047
Publication Date: 2017/09/01
Publicized: 2017/06/14
Online ISSN: 1745-1361
DOI: 10.1587/transinf.2016PCL0009
Type of Manuscript: Special Section LETTER (Special Section on Picture Coding and Image Media Processing)
Category: 
Keyword: 
high temporal resolution,  adaptive temporal filter,  dynamic programming,  

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Summary: 
In current video encoding systems, the acquisition process is independent from the video encoding process. In order to compensate for the independence, pre-filters prior to the encoder are used. However, conventional pre-filters are designed under constraints on the temporal resolution, so they are not optimized enough in terms of coding efficiency. By relaxing the restriction on the temporal resolution of current video encoding systems, there is a good possibility to generate a video signal suitable for the video encoding process. This paper proposes a video generation method with an adaptive temporal filter that utilizes a temporally over-sampled signal. The filter is designed based on dynamic-programming. Experimental results show that the proposed method can reduce encoding rate on average by 3.01 [%] compared to the constant mean filter.