Upload

Loading...

This video is unavailable.

Warp Propagation for Video Resizing

Like this video?

Sign in to make your opinion count.

Don't like this video?

Sign in to make your opinion count.

Want to watch this again later?

Sign in to add this video to a playlist.

Uploaded on Jun 30, 2010

Yuzhen Niu, Feng Liu, Xueqing Li, and Michael Gleicher begin_of_the_skype_highlighting     end_of_the_skype_highlighting. Warp Propagation for Video Resizing. IEEE CVPR 2010, San Francisco, CA, USA, June 2010.
http://www.cs.pdx.edu/~fliu/project/w...

Abstract

This paper presents a video resizing approach that provides both efficiency and temporal coherence. Prior approaches either sacrifice temporal coherence (resulting in jitter), or require expensive spatio-temporal optimization. By assessing the requirements for video resizing we observe a fundamental tradeoff between temporal coherence in the background and shape preservation for the moving objects. Understanding this tradeoff enables us to devise a novel approach that is efficient, because it warps each frame independently, yet can avoid introducing jitter. Like previous approaches, our method warps frames so that the background are distorted similarly to prior frames while avoiding distortion of the moving objects. However, our approach introduces a motion history map that propagates information about the moving objects between frames, allowing for graceful tradeoffs between temporal coherence in the background and shape preservation for the moving objects. The approach can handle scenes with significant camera and object motion and avoid jitter, yet warp each frame sequentially for efficiency. Experiments with a variety of videos demonstrate that our approach can efficiently produce high-quality video resizing results.

Loading...

Loading...

Loading...

Transcript

The interactive transcript could not be loaded.

Loading...

Loading...

Ratings have been disabled for this video.
Rating is available when the video has been rented.
This feature is not available right now. Please try again later.

Loading...

Loading...
Working...
to add this to Watch Later

Add to