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    • 39-Issue 1
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    A Cross‐Dimension Annotations Method for 3D Structural Facial Landmark Extraction

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    v39i1pp623-636.pdf (4.578Mb)
    Date
    2020
    Author
    Gong, Xun
    Chen, Ping
    Zhang, Zhemin
    Chen, Ke
    Xiang, Yue
    Li, Xin
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    Abstract
    Recent methods for 2D facial landmark localization perform well on close‐to‐frontal faces, but 2D landmarks are insufficient to represent 3D structure of a facial shape. For applications that require better accuracy, such as facial motion capture and 3D shape recovery, 3DA‐2D (2D Projections of 3D Facial Annotations) is preferred. Inferring the 3D structure from a single image is an problem whose accuracy and robustness are not always guaranteed. This paper aims to solve accurate 2D facial landmark localization and the transformation between 2D and 3DA‐2D landmarks. One way to increase the accuracy is to input more precisely annotated facial images. The traditional cascaded regressions cannot effectively handle large or noisy training data sets. In this paper, we propose a Mini‐Batch Cascaded Regressions (MBCR) method that can iteratively train a robust model from a large data set. Benefiting from the incremental learning strategy and a small learning rate, MBCR is robust to noise in training data. We also propose a new Cross‐Dimension Annotations Conversion (CDAC) method to map facial landmarks from 2D to 3DA‐2D coordinates and vice versa. The experimental results showed that CDAC combined with MBCR outperforms the‐state‐of‐the‐art methods in 3DA‐2D facial landmark localization. Moreover, CDAC can run efficiently at up to 110 on a 3.4 GHz‐CPU workstation. Thus, CDAC provides a solution to transform existing 2D alignment methods into 3DA‐2D ones without slowing down the speed. Training and testing code as well as the data set can be downloaded from https://github.com/SWJTU‐3DVision/CDAC.
    BibTeX
    @article {10.1111:cgf.13895,
    journal = {Computer Graphics Forum},
    title = {{A Cross‐Dimension Annotations Method for 3D Structural Facial Landmark Extraction}},
    author = {Gong, Xun and Chen, Ping and Zhang, Zhemin and Chen, Ke and Xiang, Yue and Li, Xin},
    year = {2020},
    publisher = {© 2020 Eurographics ‐ The European Association for Computer Graphics and John Wiley & Sons Ltd},
    ISSN = {1467-8659},
    DOI = {10.1111/cgf.13895}
    }
    URI
    https://doi.org/10.1111/cgf.13895
    https://diglib.eg.org:443/handle/10.1111/cgf13895
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    Eurographics Association copyright © 2013 - 2023 
    Send Feedback | Contact - Imprint | Data Privacy Policy | Disable Google Analytics
    Theme by @mire NV
    System hosted at  Graz University of Technology.
    TUGFhA