Search Results for author: Mathias Seuret

Found 23 papers, 13 papers with code

A Fair Evaluation of Various Deep Learning-Based Document Image Binarization Approaches

1 code implementation22 Jan 2024 Richin Sukesh, Mathias Seuret, Anguelos Nicolaou, Martin Mayr, Vincent Christlein

We evaluate them on different Document Image Binarization Contest (DIBCO) datasets and obtain very heterogeneous results.

Binarization valid

Combining OCR Models for Reading Early Modern Printed Books

1 code implementation11 May 2023 Mathias Seuret, Janne van der Loop, Nikolaus Weichselbaumer, Martin Mayr, Janina Molnar, Tatjana Hass, Florian Kordon, Anguelos Nicolau, Vincent Christlein

Moreover, we developed a system using local font group recognition in order to combine the output of multiple font recognition models, and show that while slower, this approach performs better not only on text lines composed of multiple fonts but on the ones containing a single font only as well.

Font Recognition Optical Character Recognition (OCR)

WordStylist: Styled Verbatim Handwritten Text Generation with Latent Diffusion Models

1 code implementation29 Mar 2023 Konstantina Nikolaidou, George Retsinas, Vincent Christlein, Mathias Seuret, Giorgos Sfikas, Elisa Barney Smith, Hamam Mokayed, Marcus Liwicki

Our proposed method is able to generate realistic word image samples from different writer styles, by using class index styles and text content prompts without the need of adversarial training, writer recognition, or text recognition.

 Ranked #1 on HTR on IAM

Data Augmentation Denoising +5

A Survey of Historical Document Image Datasets

no code implementations16 Mar 2022 Konstantina Nikolaidou, Mathias Seuret, Hamam Mokayed, Marcus Liwicki

However, because of the very large variety of the actual data (e. g., scripts, tasks, dates, support systems, and amount of deterioration), the different formats for data and label representation, and the different evaluation processes and benchmarks, finding appropriate datasets is a difficult task.

Document Classification

SmartPatch: Improving Handwritten Word Imitation with Patch Discriminators

1 code implementation21 May 2021 Alexander Mattick, Martin Mayr, Mathias Seuret, Andreas Maier, Vincent Christlein

As of recent generative adversarial networks have allowed for big leaps in the realism of generated images in diverse domains, not the least of which being handwritten text generation.

Data Augmentation Handwritten Text Recognition +2

ICFHR 2020 Competition on Image Retrieval for Historical Handwritten Fragments

1 code implementation20 Oct 2020 Mathias Seuret, Anguelos Nicolaou, Dominique Stutzmann, Andreas Maier, Vincent Christlein

In particular, we investigate the performance of large-scale retrieval of historical document fragments in terms of style and writer identification.

Image Retrieval Retrieval

The Notary in the Haystack -- Countering Class Imbalance in Document Processing with CNNs

no code implementations15 Jul 2020 Martin Leipert, Georg Vogeler, Mathias Seuret, Andreas Maier, Vincent Christlein

In classification, notarial instruments are distinguished from other documents, while the notary sign is separated from the certificate in the segmentation task.

Binary Classification Classification +3

Proof of Concept: Automatic Type Recognition

no code implementations15 Jul 2020 Vincent Christlein, Nikolaus Weichselbaumer, Saskia Limbach, Mathias Seuret

The type used to print an early modern book can give scholars valuable information about the time and place of its production as well as its producer.

Classification General Classification +2

Re-ranking for Writer Identification and Writer Retrieval

no code implementations14 Jul 2020 Simon Jordan, Mathias Seuret, Pavel Král, Ladislav Lenc, Jiří Martínek, Barbara Wiermann, Tobias Schwinger, Andreas Maier, Vincent Christlein

We show that a re-ranking step based on k-reciprocal nearest neighbor relationships is advantageous for writer identification, even if only a few samples per writer are available.

Re-Ranking Retrieval

Spatio-Temporal Handwriting Imitation

2 code implementations24 Mar 2020 Martin Mayr, Martin Stumpf, Anguelos Nicolaou, Mathias Seuret, Andreas Maier, Vincent Christlein

Then, a method for online handwriting synthesis is used to produce a new realistic-looking text primed with the online input sequence.

ICDAR 2019 Competition on Image Retrieval for Historical Handwritten Documents

1 code implementation8 Dec 2019 Vincent Christlein, Anguelos Nicolaou, Mathias Seuret, Dominique Stutzmann, Andreas Maier

This competition investigates the performance of large-scale retrieval of historical document images based on writing style.

Image Retrieval Retrieval

Trainable Spectrally Initializable Matrix Transformations in Convolutional Neural Networks

2 code implementations12 Nov 2019 Michele Alberti, Angela Botros, Narayan Schuez, Rolf Ingold, Marcus Liwicki, Mathias Seuret

In this work, we investigate the application of trainable and spectrally initializable matrix transformations on the feature maps produced by convolution operations.

Handwriting Recognition

Deep Generalized Max Pooling

1 code implementation14 Aug 2019 Vincent Christlein, Lukas Spranger, Mathias Seuret, Anguelos Nicolaou, Pavel Král, Andreas Maier

Global pooling layers are an essential part of Convolutional Neural Networks (CNN).

Labeling, Cutting, Grouping: an Efficient Text Line Segmentation Method for Medieval Manuscripts

1 code implementation11 Jun 2019 Michele Alberti, Lars Vögtlin, Vinaychandran Pondenkandath, Mathias Seuret, Rolf Ingold, Marcus Liwicki

We measured the performance of our method on a recent dataset of challenging medieval manuscripts and surpassed state-of-the-art results by reducing the error by 80. 7%.

Denoising Segmentation +1

Are You Tampering With My Data?

1 code implementation21 Aug 2018 Michele Alberti, Vinaychandran Pondenkandath, Marcel Würsch, Manuel Bouillon, Mathias Seuret, Rolf Ingold, Marcus Liwicki

We propose a novel approach towards adversarial attacks on neural networks (NN), focusing on tampering the data used for training instead of generating attacks on trained models.

A Pitfall of Unsupervised Pre-Training

no code implementations23 Nov 2017 Michele Alberti, Mathias Seuret, Rolf Ingold, Marcus Liwicki

Experimental results suggest that in fact, there is no correlation between the reconstruction score and the quality of features for a classification task.

Classification General Classification +1

Historical Document Image Segmentation with LDA-Initialized Deep Neural Networks

1 code implementation19 Oct 2017 Michele Alberti, Mathias Seuret, Vinaychandran Pondenkandath, Rolf Ingold, Marcus Liwicki

In this paper, we present a novel approach to perform deep neural networks layer-wise weight initialization using Linear Discriminant Analysis (LDA).

Image Segmentation Semantic Segmentation +1

Convolutional Neural Networks for Page Segmentation of Historical Document Images

no code implementations5 Apr 2017 Kai Chen, Mathias Seuret

This paper presents a Convolutional Neural Network (CNN) based page segmentation method for handwritten historical document images.

Segmentation

A Pitfall of Unsupervised Pre-Training

no code implementations13 Mar 2017 Michele Alberti, Mathias Seuret, Rolf Ingold, Marcus Liwicki

Experimental results suggest that in fact, there is no correlation between the reconstruction score and the quality of features for a classification task.

Classification General Classification +1

PCA-Initialized Deep Neural Networks Applied To Document Image Analysis

no code implementations1 Feb 2017 Mathias Seuret, Michele Alberti, Rolf Ingold, Marcus Liwicki

In this paper, we present a novel approach for initializing deep neural networks, i. e., by turning PCA into neural layers.

Transfer Learning

DIVA-HisDB: A Precisely Annotated Large Dataset of Challenging Medieval Manuscripts

no code implementations International Conference on Frontiers in Handwriting Recognition 2016 Fotini Simistira, Mathias Seuret, Nicole Eichenberger, Angelika Garz, Marcus Liwicki, Rolf Ingold

Layout analysis results of several representative baseline technologies are also presented in order to help researchers evaluate their methods and advance the frontiers of complex historical manuscripts analysis.

Binarization Document Layout Analysis +2

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