Shrinkability Maps for Content-Aware Video Resizing
| dc.contributor.author | Zhang, Yi-Fei | en_US |
| dc.contributor.author | Hu, Shi-Min | en_US |
| dc.contributor.author | Martin, Ralph R. | en_US |
| dc.date.accessioned | 2015-02-21T17:59:50Z | |
| dc.date.available | 2015-02-21T17:59:50Z | |
| dc.date.issued | 2008 | en_US |
| dc.description.abstract | A novel method is given for content-aware video resizing, i.e. targeting video to a new resolution (which may involve aspect ratio change) from the original.We precompute a per-pixel cumulative shrinkability map which takes into account both the importance of each pixel and the need for continuity in the resized result. (If both x and y resizing are required, two separate shrinkability maps are used, otherwise one suffices). A random walk model is used for efficient offline computation of the shrinkability maps. The latter are stored with the video to create a multi-sized video, which permits arbitrary-sized new versions of the video to be later very efficiently created in real-time, e.g. by a video-on-demand server supplying video streams to multiple devices with different resolutions. These shrinkability maps are highly compressible, so the resulting multi-sized videos are typically less than three times the size of the original compressed video. A scaling function operates on the multi-sized video, to give the new pixel locations in the result, giving a high-quality content-aware resized video.Despite the great efficiency and low storage requirements for our method, we produce results of comparable quality to state-of-the-art methods for content-aware image and video resizing. | en_US |
| dc.description.number | 7 | en_US |
| dc.description.seriesinformation | Computer Graphics Forum | en_US |
| dc.description.volume | 27 | en_US |
| dc.identifier.doi | 10.1111/j.1467-8659.2008.01325.x | en_US |
| dc.identifier.issn | 1467-8659 | en_US |
| dc.identifier.pages | 1797-1804 | en_US |
| dc.identifier.uri | https://doi.org/10.1111/j.1467-8659.2008.01325.x | en_US |
| dc.publisher | The Eurographics Association and Blackwell Publishing Ltd | en_US |
| dc.title | Shrinkability Maps for Content-Aware Video Resizing | en_US |