Erratum: Synthesis of facial caricature using eigenspaces
Author(s): Guang Zhe Xu, Masahide Kaneko, Akira Kurematsu.
Article: Electronics and Communications in Japan (Part III: Fundamental Electronic Science), Vol. 88, No. 2, pp. 64--76, February,
2005.
[BibTeX]
Abstract:
A facial caricature expresses features of an individual
face compactly and effectively. It is used in newspapers,
magazines, home pages, and also used to represent an
anthropomorphic agent and so on. This paper presents a
method of synthesizing a caricature having higher flexibility
in controlling individual shape features of various parts
of a face, as well as features of arrangements and inclines
of these parts. Firstly, an eigenspace is calculated for contour
shape of each facial part such as the eyebrows, eyes,
and mouth. In addition, an eigenspace for arrangements of
various facial parts is obtained. Next, differences of the
shapes and arrangements of the facial parts with the average
face are calculated and then the orthogonal expansion to the
basis vectors (eigenvectors) is carried out on these differences.
Magnifying powers are determined according to the
coefficients obtained by the orthogonal expansion and an
emphasizing procedure is performed on eigenvectors. The
difference between the slope of each facial part of the
average face and that of an input face is emphasized using
a quadratic function. A final caricature can be obtained by
adding the average shape, average arrangement and average
slope to these results. The effectiveness of the proposed
caricature synthesis method is verified by subjective
evaluation tests on synthesized facial caricatures.
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