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. 2022 Jun 7;10:e13281. doi: 10.7717/peerj.13281

Figure 3. The four steps of the image preparation.

Figure 3

(A) Using the manual clicked landmarks, a general face template is roughly aligned on the 3D image. (B) Excess data is removed by using the registered template, retaining only the face. (C) A non-rigid registration algorithm is used to morph the registered template on the face. (D) The template is projected back on the original image.