A Scaling Method for Video Images Based on Nonlinear Curve

DOI

10.2991/icmemtc-16.2016.227How to use a DOI?

Keywords

nonlinear scaling; scaling curve; elliptic curve function; nonlinear scaling factor

Abstract

When Digital Video image transformation from general screen (i.e., 4:3, etc.) to widescreen (i.e., 16:9, etc.), the source image aspect ratio will change, image resolution adjustment and format conversion is difficult. In this paper, a method of nonlinear scaling is proposed, aim to overcome the image edge distortion problem caused by conventional transform methods. The proposed method is to transform based on nonlinear scaling curve in the horizontal direction, it uses elliptic curve scaling function on both sides of the image and also add appropriate nonlinear scaling factor in central area, achieving the overall image of the nonlinear scaling factor change is smooth, to reduce the overall image distortion. The simulation result shows that the distortion of the scaled image is acceptable, the proposed method is more efficient than conventional methods.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - Shexiang Ma
AU  - Sibo Wang
PY  - 2016/04
DA  - 2016/04
TI  - A Scaling Method for Video Images Based on Nonlinear Curve
BT  - Proceedings of the 2016 3rd International Conference on Materials Engineering, Manufacturing Technology and Control
PB  - Atlantis Press
SP  - 1145
EP  - 1148
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmemtc-16.2016.227
DO  - 10.2991/icmemtc-16.2016.227
ID  - Ma2016/04
ER  -