Bi-directional deformable block-based motion estimation for frame rate-up conversion of 360-degree videos

• Published in: Electronics letters Vol. 53; no. 17; pp. 1192 - 1194
• Main Authors: Kim, Nayoung, Kang, Je-Won
• Format: Journal Article
• Language: English
• Published: The Institution of Engineering and Technology 01.08.2017
• Subjects: 360‐degree videos; bidirectional deformable block‐based motion estimation; block shapes; equi‐rectangular projection; geometric property; Image and vision processing and display technology; MC‐FRUC; motion compensated frame‐rate up conversion; motion compensation; motion estimation; motion prediction; video signal processing; visual quality; block shapes; motion prediction; motion compensated frame-rate up conversion; 360-degree videos; motion estimation; bidirectional deformable block-based motion estimation; geometric property; visual quality; video signal processing; motion compensation; MC-FRUC; equi-rectangular projection
• ISSN: 0013-5194; 1350-911X; 1350-911X
• DOI: 10.1049/el.2017.1792

A bi-directional deformable block-based motion-estimation algorithm to improve the accuracy of a motion prediction in a 360-degree video, used for motion compensated frame-rate up conversion (MC-FRUC) is proposed. The block shapes are adaptively deformed to predict a motion based on the coordinate of the current block, considering the geometric property of the equi-rectangular projection of 360-degree videos. Experimental results demonstrate that the proposed technique can significantly improve the visual quality of the videos as compared with the conventional MC-FRUC.