Search Results for author: George Economou

Found 5 papers, 0 papers with code

Leveraging Expert Models for Training Deep Neural Networks in Scarce Data Domains: Application to Offline Handwritten Signature Verification

no code implementations2 Aug 2023 Dimitrios Tsourounis, Ilias Theodorakopoulos, Elias N. Zois, George Economou

This paper introduces a novel approach to leverage the knowledge of existing expert models for training new Convolutional Neural Networks, on domains where task-specific data are limited or unavailable.

Knowledge Distillation

A comprehensive study of sparse representation techniques for offline signature verification

no code implementations13 Jul 2018 Elias N. Zois, Dimitrios Tsourounis, Ilias Theodorakopoulos, Anastasios Kesidis, George Economou

In this work, a feature extraction method for offline signature verification is presented that harnesses the power of sparse representation in order to deliver state-of-the-art verification performance in several signature datasets like CEDAR, MCYT-75, GPDS and UTSIG.

Attention-Aware Generative Adversarial Networks (ATA-GANs)

no code implementations25 Feb 2018 Dimitris Kastaniotis, Ioanna Ntinou, Dimitrios Tsourounis, George Economou, Spiros Fotopoulos

Using the attention maps produced by a Teacher- Network we are able to improve the quality of the generated images as well as perform weakly object localization on the generated images.

object-detection Object Detection +2

Offline Handwritten Signature Modeling and Verification Based on Archetypal Analysis

no code implementations ICCV 2017 Elias N. Zois, Ilias Theodorakopoulos, George Economou

The output of the archetypal analysis of few reference samples is a set of archetypes which are used to form the base of the feature space.

On the definition of Shape Parts: a Dominant Sets Approach

no code implementations11 Sep 2017 Foteini Fotopoulou, George Economou

In the present paper a novel graph-based approach to the shape decomposition problem is addressed.

graph construction graph partitioning

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