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

fYear

2015

fDate

9-12 Jan. 2015

Firstpage

58

Lastpage

59

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics (ICCE), 2015 IEEE International Conference on

Conference_Location

Las Vegas, NV

Print_ISBN

978-1-4799-7542-6

Type

conf

DOI

10.1109/ICCE.2015.7066317

Filename

7066317