Publications de Nikolaos Arvanitopoulos Darginis

A Handwritten French Dataset for Word Spotting - CFRAMUZ

Sabine Süsstrunk, Nikolaos Arvanitopoulos Darginis

We present a new and freely available dataset, CFRAMUZ, for segmentation-free word spotting research. The dataset consists of seven novels with a total number of 64 pages and 18000 words written in french by the Swiss writer C.F. Ramuz. The novels cover th ...

2017

Extreme Image Completion

Sabine Süsstrunk, Radhakrishna Achanta, Nikolaos Arvanitopoulos Darginis

It is challenging to complete an image whose 99 percent pixels are randomly missing. We present a solution to this extreme image completion problem. As opposed to existing techniques, our solution has a computational complexity that is linear in the number ...

Ieee2017

Sparse Gradient Optimization and its Applications in Image Processing

Nikolaos Arvanitopoulos Darginis

Millions of digital images are captured by imaging devices on a daily basis. The way imaging devices operate follows an integral process from which the information of the original scene needs to be estimated. The estimation is done by inverting the integra ...

EPFL2017

Single Image Reflection Suppression

Sabine Süsstrunk, Radhakrishna Achanta, Nikolaos Arvanitopoulos Darginis

Reflections are a common artifact in images taken through glass windows. Automatically removing the reflection artifacts after the picture is taken is an ill-posed problem. Attempts to solve this problem using optimization schemes therefore rely on various ...

Ieee2017

Graph Embedded Nonparametric Mutual Information For Supervised Dimensionality Reduction

Nikolaos Arvanitopoulos Darginis

In this paper, we propose a novel algorithm for dimensionality reduction that uses as a criterion the mutual information (MI) between the transformed data and their cor- responding class labels. The MI is a powerful criterion that can be used as a proxy to ...

Institute of Electrical and Electronics Engineers2015

Image Aesthetics Depends on Context

Sabine Süsstrunk, Nikolaos Arvanitopoulos Darginis, Florian Simond

2015

Seam Carving for Text Line Extraction on Color and Grayscale Historical Manuscripts

Sabine Süsstrunk, Nikolaos Arvanitopoulos Darginis

We propose a novel algorithm for automatic text line extraction on color and grayscale manuscript pages without prior binarization. Our algorithm is based on seam carving to compute separating seams between text lines. Seam carving is likely to produce ...

2014

Binarization-free Text Line Extraction for Historical Manuscripts

Sabine Süsstrunk, Nikolaos Arvanitopoulos Darginis

2014