Details

Autor(en) / Beteiligte

• Kobler, Erich
• Klatzer, Teresa
• Hammernik, Kerstin
• Pock, Thomas

Titel

Variational Networks: Connecting Variational Methods and Deep Learning

Ist Teil von

• Pattern Recognition, p.281-293

Ort / Verlag

Cham: Springer International Publishing

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• In this paper, we introduce variational networks (VNs) for image reconstruction. VNs are fully learned models based on the framework of incremental proximal gradient methods. They provide a natural transition between classical variational methods and state-of-the-art residual neural networks. Due to their incremental nature, VNs are very efficient, but only approximately minimize the underlying variational model. Surprisingly, in our numerical experiments on image reconstruction problems it turns out that giving up exact minimization leads to a consistent performance increase, in particular in the case of convex models.