Search Results for author: Christos Sagonas

Found 6 papers, 0 papers with code

Jointly Aligning Millions of Images with Deep Penalised Reconstruction Congealing

no code implementations ICCV 2019 Roberto Annunziata, Christos Sagonas, Jacques Cali

Extrapolating fine-grained pixel-level correspondences in a fully unsupervised manner from a large set of misaligned images can benefit several computer vision and graphics problems, e. g. co-segmentation, super-resolution, image edit propagation, structure-from-motion, and 3D reconstruction.

3D Reconstruction Super-Resolution

DeSTNet: Densely Fused Spatial Transformer Networks

no code implementations11 Jul 2018 Roberto Annunziata, Christos Sagonas, Jacques Calì

In this paper, we propose Densely Fused Spatial Transformer Network (DeSTNet), which, to our best knowledge, is the first dense fusion pattern for combining multiple STNs.

Robust Joint and Individual Variance Explained

no code implementations CVPR 2017 Christos Sagonas, Yannis Panagakis, Alina Leidinger, Stefanos Zafeiriou

Even though the CCA is a powerful tool, it has several drawbacks that render its application challenging for computer vision applications.

Robust Statistical Face Frontalization

no code implementations ICCV 2015 Christos Sagonas, Yannis Panagakis, Stefanos Zafeiriou, Maja Pantic

The proposed method is assessed in frontal face reconstruction, face landmark localization, pose-invariant face recognition, and face verification in unconstrained conditions.

Face Alignment Face Recognition +3

Face frontalization for Alignment and Recognition

no code implementations3 Feb 2015 Christos Sagonas, Yannis Panagakis, Stefanos Zafeiriou, Maja Pantic

The proposed method is assessed in frontal face reconstruction (pose correction), face landmark localization, and pose-invariant face recognition and verification by conducting experiments on $6$ facial images databases.

Face Recognition Face Reconstruction +1

RAPS: Robust and Efficient Automatic Construction of Person-Specific Deformable Models

no code implementations CVPR 2014 Christos Sagonas, Yannis Panagakis, Stefanos Zafeiriou, Maja Pantic

Next, to correct the fittings of a generic model, image congealing (i. e., batch image aliment) is performed by employing only the learnt orthonormal subspace.

Face Alignment Image Reconstruction

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