http://dx.doi.org/10.1007/978-3-642-15819-3_51">
 

Document Type

Conference Paper

Department/Unit

Department of Computer Science

Title

Automatic segmentation of color lip images based on morphological filter

Language

English

Abstract

This paper addresses the problem of lip segmentation in color space, which is a crucial issue to the success of a lip-reading system. We present a new segmentation approach to lip contour extraction by taking account of the color difference between lip and skin in color space. Firstly, we obtain a lip segment sample via a color transformation sequence in 1976 CIELAB and LUX color spaces. Secondly, we establish a Gaussian model and make use of the hue and saturation value of each pixel within the lip segment to estimate the model parameters. Subsequently, the memberships of lip and non-lip regions are calculated, respectively. Thirdly, we employ morphological filters to obtain the desirable lip region approximately based on the memberships. Finally, we extract the lip contour via convex hull algorithm with the prior knowledge of the human mouth shape. Experiments show the efficacy of the proposed approach in comparison with the existing lip segmentation methods. © 2010 Springer-Verlag Berlin Heidelberg.

Publication Date

2010

Source Publication Title

Artificial Neural Networks – ICANN 2010: 20th International Conference, Thessaloniki, Greece, September 15-18, 2010, Proceedings, Part I

Start Page

384

End Page

387

Conference Location

Thessaloniki, Greece

Publisher

Springer

ISBN (print)

9783642158186

ISBN (electronic)

9783642158193

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