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Towards building a photo-realistic virtual human face for craniomaxillofacial diagnosis and treatment planning

Author(s): A. F. Ayoub, Y. Xiao, B. Khambay, J. P. Siebert, D. Hadley

The aim of this investigation Was to assess the feasibility of building a virtual human face digitally by superimposing a photo-realistic three-dimensional (3D) soft-tissue surface on bone in the correct relationship and evaluating the registration errors associated with this method. The 3D soft-tissue surface of the face was captured using a fast stereophotogrammetry method and the underlying bone was recorded using a 3D computed tomography (CT) scanner. Using the Procrustes registration method, the outer surface of the 3D CT scan and the photo-realistic soft-tissue surfaces were merged into a single Virtual Reality Modelling Language (VRML) file and displayed using a standard VRML viewer. Quantitative measurements of registration errors were calculated in the reconstructed human head models using the signed closest point distance from the photo-realistic skin surface to the transformed CT skin surface. The registration errors between most parts of the aligned surfaces were within +/- 1.5 mm. The errors were relatively large around the eyebrows, eyelids and cheeks. Simultaneous recording of the face and skull may reduce this error.

Full version: Available here

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ISBN: 0901-5027
Publication Year: 2007
Periodical: International Journal of Oral and Maxillofacial Surgery
Periodical Number: 5
Volume: 36
Pages: 423-428
Author Address: