Title :
Improvement of 8K UHDTV picture quality for H.265/HEVC by global zoom estimation
Author :
Takada, Ryoki ; Orihashi, Shota ; Matsuo, Yasutaka ; Katto, Jiro
Author_Institution :
Dept. of Commun. & Comput. Eng., Waseda Univ., Tokyo, Japan
Abstract :
Block-based Motion Estimation (ME) has been widely used in various video coding standards to remove temporal redundancy. However, this ME has limitation that it can only compensate for a parallel translation. Various methods have been proposed for other motions such as zooming. In recent years, 8K UHDTV (7,680 × 4,320 pixels) has been developed. Since 8K has large motion by zooming that is difficult to be predicted by block matching, it is important to improve zoom motion estimation. In this paper, to handle zooming in 8K video sequences, we propose a method for improving the picture quality by global zoom estimation based on motion vector analysis extracted by block matching.
Keywords :
estimation theory; high definition television; image matching; image sequences; motion estimation; video coding; 8K UHDTV picture quality; H.265-HEVC; ME; block based motion estimation; block matching; global zoom estimation; motion vector analysis; parallel translation; video coding standards; video sequences; zoom motion estimation; Encoding; Estimation; Motion estimation; Motion segmentation; Proposals; Vectors; Video coding;
Conference_Titel :
Consumer Electronics (ICCE), 2015 IEEE International Conference on
Conference_Location :
Las Vegas, NV
Print_ISBN :
978-1-4799-7542-6
DOI :
10.1109/ICCE.2015.7066317
