NDLI: Alpha channel estimation in high resolution images and image sequences

Content Provider	IEEE Xplore Digital Library
Author	Hillman, P. Hannah, J. Renshaw, D.
Copyright Year	2001
Description	Author affiliation: Dept. of Electron. & Electr. Eng., Edinburgh Univ., UK (Hillman, P.; Hannah, J.; Renshaw, D.)
Abstract	For motion picture special effects, it is often necessary to take a source image of an actor, segment the actor from the unwanted background, and then composite over a new background. The standard approach requires the unwanted background to be a blue screen. While this technique is capable of handling areas where the foreground blends into the background, the physical requirements present many practical problems. This paper presents an algorithm that requires minimal human interaction to segment motion picture resolution images and image sequences. We show that it can be used not only to segment badly lit or noisy blue screen images, but also to segment actors where the background is more varied.
Sponsorship	IEEE Comput. Soc. Tech. Committee on Pattern Analysis & Machine Intelligence
File Size	613459
File Format	PDF
ISBN	0769512720
ISSN	10636919
DOI	10.1109/CVPR.2001.990648
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-12-08
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Channel estimation Image resolution Image sequences Image segmentation Motion pictures Humans Image edge detection Background noise Bandwidth Video compression
Content Type	Text
Resource Type	Article
Subject	Computer Vision and Pattern Recognition Software

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