Identity-Expression Ambiguity in 3D Morphable Face Models

2021 16th IEEE International Conference on Automatic Face and Gesture Recognition (FG 2021)(2021)

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摘要
3D Morphable Models are a class of generative models commonly used to model faces. They are typically applied to ill-posed problems such as 3D reconstruction from 2D data. Several ambiguities in this problem's image formation process have been studied explicitly. We demonstrate that nonorthogonality of the variation in identity and expression can cause identity-expression ambiguity in 3D Morphable...
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