Abstract
When a face is viewed under perspective projection, its shape (i.e. the 2D position of features) changes dramatically as the distance between face and camera varies. This causes substantial variation in appearance which is significant enough to disrupt human recognition of unfamiliar faces. However, a face viewed at any distance is still perceived as natural and humans are bad at interpreting the subject-camera distance given only a face image. We show that perspective viewing of faces leads to an ambiguity. Namely, that observed configurational information (position of projected vertices) and shading can be explained by a continuous class of possible faces. To demonstrate the ambiguity, we propose a novel method for efficiently fitting a 3D morphable model to 2D vertex positions when the subject-camera distance is known. By varying this distance, we obtain a subspace of faces, all of which are consistent with the observed data. We additionally show that faces within this subspace can all produce approximately the same shading pattern via a spherical harmonic lighting model.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Albrecht, T., Knothe, R., Vetter, T.: Modeling the remaining flexibility of partially fixed statistical shape models. In: Proceedings of the Workshop on the Mathematical Foundations of Computational Anatomy (2008)
Aldrian, O., Smith, W.A.P.: Inverse rendering of faces with a 3D morphable model. IEEE Trans. Pattern Anal. Mach. Intell. 35 (5), 1080–1093 (2013)
Amberg, B., Blake, A., Fitzgibbon, A., Romdhani, S., Vetter, T.: Reconstructing high quality face-surfaces using model based stereo. In: Proceedings of the ICCV, Rio de Janeiro (2007)
Basri, R., Jacobs, D.W.: Lambertian reflectance and linear subspaces. IEEE Trans. Pattern Anal. Mach. Intell. 25 (2), 218–233 (2003)
Belhumeur, P.N., Kriegman, D.J., Yuille, A.L.: The bas–relief ambiguity. Int. J. Comput. Vis. 35 (1), 33–44 (1999)
Blanz, V., Mehl, A., Vetter, T., Seidel, H.P.: A statistical method for robust 3D surface reconstruction from sparse data. In: Proceedings of the 3DPVT, Thessaloniki, pp. 293–300 (2004)
Blanz, V., Vetter, T.: Face recognition based on fitting a 3D morphable model. IEEE Trans. Pattern Anal. Mach. Intell. 25 (9), 1063–1074 (2003)
Brunton, A., Salazar, A., Bolkart, T., Wuhrer, S.: Review of statistical shape spaces for 3D data with comparative analysis for human faces. Comput. Vis. Image Underst. 128, 1–17 (2014)
Bryan, R., Perona, P., Adolphs, R.: Perspective distortion from interpersonal distance is an implicit visual cue for social judgments of faces. PloS one 7 (9), e45,301 (2012)
Burgos-Artizzu, X.P., Ronchi, M.R., Perona, P.: Distance estimation of an unknown person from a portrait. In: Proceedings of the ECCV, Zurich, pp. 313–327 (2014)
Cootes, T.F., Edwards, G.J., Taylor, C.J.: Active appearance models. In: Proceedings of the ECCV, Freiburg, pp. 484–498 (1998)
Flores, A., Christiansen, E., Kriegman, D., Belongie, S.: Camera distance from face images. In: Proceedings of the ISVC, Rethymnon, pp. 513–522 (2013)
Georghiades, A., Belhumeur, P., Kriegman, D.: From few to many: illumination cone models for face recognition under variable lighting and pose. IEEE Trans. Pattern Anal. Mach. Intell. 23 (6), 643–660 (2001)
Gordon, C.C., Churchill, T., Clauser, C.E., Bradtmiller, B., McConville, J.T.: Anthropometric survey of US army personnel: methods and summary statistics 1988. Technical report NATICK/TR-89/044, DTIC Document (1989)
Hartley, R., Zisserman, A.: Multiple View Geometry in Computer Vision. Cambridge university press, Cambridge/New York (2003)
Hill, H., Bruce, V.: A comparison between the hollow–face and ‘hollow–potato’ illusions. Perception 23, 1335–1337 (1994)
Keller, M., Knothe, R., Vetter, T.: 3D reconstruction of human faces from occluding contours. In: Proceedings of the Mirage, Rocquencourt, pp. 261–273 (2007)
Kleinberg, K.F., Vanezis, P., Burton, A.M.: Failure of anthropometry as a facial identification technique using high-quality photographs. J. Forensic Sci. 52 (4), 779–783 (2007)
Knothe, R., Romdhani, S., Vetter, T.: Combining PCA and LFA for surface reconstruction from a sparse set of control points. In: Proceedings of the International Conference on Automatic Face and Gesture Recognition, Southampton, pp. 637–644 (2006)
Latto, R., Harper, B.: The non-realistic nature of photography: further reasons why Turner was wrong. Leonardo 40 (3), 243–247 (2007)
Lepetit, V., Moreno-Noguer, F., Fua, P.: EPnP: an accurate O(n) solution to the PnP problem. Int. J. Comput. Vis. 81 (2), 155–166 (2009)
Liu, C.H., Chaudhuri, A.: Face recognition with perspective transformation. Vis. Res. 43 (23), 2393—2402 (2003)
Liu, C.H., Ward, J.: Face recognition in pictures is affected by perspective transformation but not by the centre of projection. Perception 35 (12), 1637–1650 (2006)
Lüthi, M., Albrecht, T., Vetter, T.: Probabilistic modeling and visualization of the flexibility in morphable models. In: Proceedings of the Thirteenth IMA Conference on Mathematics of Surfaces, York, pp. 251–264 (2009)
Patel, A., Smith, W.A.P.: 3D morphable face models revisited. In: Proceedings of the CVPR, Miami, pp. 1327–1334 (2009)
Paysan, P., Knothe, R., Amberg, B., Romdhani, S., Vetter, T.: A 3D face model for pose and illumination invariant face recognition. In: Proceedings of the IEEE International Conference on Advanced Video and Signal Based Surveillance (2009)
Perona, P.: A new perspective on portraiture. J. Vis. 7 (9), 992–992 (2007)
Porter, G., Doran, G.: An anatomical and photographic technique for forensic facial identification. Forensic Sci. Int. 114 (2), 97–105 (2000)
Sagonas, C., Tzimiropoulos, G., Zafeiriou, S., Pantic, M.: 300 faces in-the-wild challenge: the first facial landmark localization challenge. In: Proceedings of the ICCV Workshop on Automatic Facial Landmark Detection in-the-Wild Challenge, Sydney, pp. 397–403 (2013)
Acknowledgements
I would like to thank the reviewers for their thoughtful comments which helped improve the chapter significantly.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2016 Springer International Publishing Switzerland
About this paper
Cite this paper
Smith, W.A.P. (2016). The Perspective Face Shape Ambiguity. In: Breuß, M., Bruckstein, A., Maragos, P., Wuhrer, S. (eds) Perspectives in Shape Analysis. Mathematics and Visualization. Springer, Cham. https://doi.org/10.1007/978-3-319-24726-7_14
Download citation
DOI: https://doi.org/10.1007/978-3-319-24726-7_14
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-24724-3
Online ISBN: 978-3-319-24726-7
eBook Packages: Mathematics and StatisticsMathematics and Statistics (R0)