Reconstruction of hidden 3D shapes using diffuse reflections

Reconstruction of hidden 3D shapes using diffuse reflections

We analyze multi-bounce propagation of light in an unknown hidden volume and demonstrate that the reflected light contains sufficient information to recover the 3D structure of the hidden scene. We formulate the forward and inverse theory of secondary scattering using ideas from energy front propagation and tomography. We show that using Fresnel approximation greatly simplifies this problem and...

PCA-based Reconstruction of 3D Face shapes using Tikhonov Regularization

Reconstructing a 3D face shape from a limited number of 2D facial feature points is considered as an ill-posed problem which can be solved using regularization. Tikhonov regularization is a popular method that incorporates prior information towards providing the existence of closed-form solutions which we obtain as a result of applying PCA, in order to solve the ill-posed problem. The common fa...

Automatic 3D Reconstruction for Symmetric Shapes

Generic 3D reconstruction from a single image is a difficult problem. A lot of data loss occurs in the projection. A domain based approach to reconstruction where we solve a smaller set of problems for a particular use case lead to greater returns. The project provides a way to automatically generate full 3-D renditions of actual symmetric images that have some prior information provided in the...

Reconstruction and Analysis of Shapes from 3D Scans

Reconstruction of non-rigid 3D shapes from stereo-motion

0167-8655/$ see front matter 2011 Elsevier B.V. A doi:10.1016/j.patrec.2011.02.010 ⇑ Corresponding author. Tel.: +34 972 418878; fax: E-mail addresses: [email protected] (X. Lladó), ales [email protected] (A. Oliver), [email protected] ac.uk (L. Agapito). Several non-rigid structure from motion methods have been proposed so far in order to recover both the motion and the non-rigid structure ...