動画像に対する手振れ補正と超解像ズームの同時処理方式

概要

論文の詳細を見る
Large magnification zooming — one of the most important functions in state-of-the-art video cameras — is achieved with a combination of optical-lens and digital zooming. If the magnification ratio is too large, however, optical stabilization mechanisms cannot completely remove unwanted vibrations in a video sequence induced by camera motion. In addition, the zoomed video suffers from blur when simple frame magnification is used for digital zooming. We have developed a novel technique for video stabilization that works in conjunction with super-resolution zooming. The advantage of the proposed technique is that both the stabilization and the super-resolution zooming are performed concurrently in a unified framework. With this framework, the local motions need to be estimated only once for both the stabilization and the zooming. Testing demonstrated that use of the proposed technique results in stable zooming with video resolution much higher than with conventional digital zooming.
2009-11-01