no code implementations • 22 Jun 2022 • Prathmesh Madhu, Tilman Marquart, Ronak Kosti, Dirk Suckow, Peter Bell, Andreas Maier, Vincent Christlein
In this work, we present a novel approach called Image Composition Canvas (ICC++) to compare and retrieve images having similar compositional elements.
no code implementations • 30 May 2022 • Tobias Koch, Felix Liebezeit, Christian Riess, Vincent Christlein, Thomas Köhler
One particular machine learning problem in dynamic environments is open world recognition.
1 code implementation • 7 Apr 2022 • Anguelos Nicolaou, Vincent Christlein, Edgar Riba, Jian Shi, Georg Vogeler, Mathias Seuret
We propose the use of fractals as a means of efficient data augmentation.
Ranked #1 on
No real Data Binarization
on DIBCO and H_DIBCO 2009
no code implementations • 7 Feb 2022 • Aline Sindel, Abner Hernandez, Seung Hee Yang, Vincent Christlein, Andreas Maier
With the increasing number of online learning material in the web, search for specific content in lecture videos can be time consuming.
no code implementations • 6 Jan 2022 • Aline Sindel, Bettina Hohberger, Sebastian Fassihi Dehcordi, Christian Mardin, Robert Lämmer, Andreas Maier, Vincent Christlein
Our method demonstrates the best registration performance on our and a public multi-modal dataset in comparison to competing methods.
no code implementations • 5 Nov 2021 • Sonja Kunzmann, Christian Marzahl, Felix Denzinger, Christof A. Bertram, Robert Klopfleisch, Katharina Breininger, Vincent Christlein, Andreas Maier
Annotating data, especially in the medical domain, requires expert knowledge and a lot of effort.
no code implementations • 31 Aug 2021 • Mathis Hoffmann, Johannes Hepp, Bernd Doll, Claudia Buerhop-Lutz, Ian Marius Peters, Christoph Brabec, Andreas Maier, Vincent Christlein
While these areas can be easily identified from electroluminescense (EL) images, this is much harder for photoluminescence (PL) images.
1 code implementation • 21 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.
1 code implementation • 21 Apr 2021 • Soroosh Tayebi Arasteh, Mehrpad Monajem, Vincent Christlein, Philipp Heinrich, Anguelos Nicolaou, Hamidreza Naderi Boldaji, Mahshad Lotfinia, Stefan Evert
As a strong baseline, we propose a two-stage DL-based method: first, we create automatically labeled training data by applying a standard sentiment classifier to tweet replies and aggregating its predictions for each original tweet; our rationale is that individual errors made by the classifier are likely to cancel out in the aggregation step.
Ranked #1 on
Tweet-Reply Sentiment Analysis
on RETWEET
no code implementations • 15 Mar 2021 • Kai Packhäuser, Sebastian Gündel, Nicolas Münster, Christopher Syben, Vincent Christlein, Andreas Maier
Our verification system is able to identify whether two frontal chest X-ray images are from the same person with an AUC of 0. 9940 and a classification accuracy of 95. 55%.
no code implementations • 9 Mar 2021 • Amirabbas Davari, Christoph Baller, Thorsten Seehaus, Matthias Braun, Andreas Maier, Vincent Christlein
In this work, we propose to mitigate the class-imbalance between the calving front class and the non-calving front class by reformulating the segmentation problem into a pixel-wise regression task.
1 code implementation • 16 Feb 2021 • Amirabbas Davari, Saahil Islam, Thorsten Seehaus, Matthias Braun, Andreas Maier, Vincent Christlein
Moreover, we propose an improvement to the distance map-based binary cross-entropy (BCE) loss function.
no code implementations • 8 Jan 2021 • Michael Holzmann, Amirabbas Davari, Thorsten Seehaus, Matthias Braun, Andreas Maier, Vincent Christlein
An essential climate variable to determine the tidewater glacier status is the location of the calving front position and the separation of seasonal variability from long-term trends.
no code implementations • 8 Jan 2021 • Andreas Hartmann, Amirabbas Davari, Thorsten Seehaus, Matthias Braun, Andreas Maier, Vincent Christlein
It is therefore important to precisely monitor the position of the calving front.
no code implementations • 8 Jan 2021 • Rosanna Dietrich-Sussner, Amirabbas Davari, Thorsten Seehaus, Matthias Braun, Vincent Christlein, Andreas Maier, Christian Riess
Supervised machine learning requires a large amount of labeled data to achieve proper test results.
1 code implementation • 10 Dec 2020 • Prathmesh Madhu, Angel Villar-Corrales, Ronak Kosti, Torsten Bendschus, Corinna Reinhardt, Peter Bell, Andreas Maier, Vincent Christlein
(2) To improve the already strong results further, we created a small dataset (ClassArch) consisting of ancient Greek vase paintings from the 6-5th century BCE with person and pose annotations.
no code implementations • 10 Nov 2020 • Mathis Hoffmann, Thomas Köhler, Bernd Doll, Frank Schebesch, Florian Talkenberg, Ian Marius Peters, Christoph J. Brabec, Andreas Maier, Vincent Christlein
Visual inspection of solar modules is an important monitoring facility in photovoltaic power plants.
1 code implementation • 20 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.
1 code implementation • 30 Sep 2020 • Mathis Hoffmann, Claudia Buerhop-Lutz, Luca Reeb, Tobias Pickel, Thilo Winkler, Bernd Doll, Tobias Würfl, Ian Marius Peters, Christoph Brabec, Andreas Maier, Vincent Christlein
However, knowledge of the power at maximum power point is important as well, since drops in the power of a single module can affect the performance of an entire string.
1 code implementation • 8 Sep 2020 • Prathmesh Madhu, Tilman Marquart, Ronak Kosti, Peter Bell, Andreas Maier, Vincent Christlein
These compositions are useful in analyzing the interactions in an image to study artists and their artworks.
no code implementations • 15 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.
no code implementations • 15 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.
no code implementations • 14 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.
1 code implementation • 31 Mar 2020 • Prathmesh Madhu, Ronak Kosti, Lara Mührenberg, Peter Bell, Andreas Maier, Vincent Christlein
We present experiments and analysis on three different models and show that the model trained on domain related data gives the best performance for recognizing character.
2 code implementations • 24 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.
no code implementations • 30 Jan 2020 • Martin Mayr, Mathis Hoffmann, Andreas Maier, Vincent Christlein
To this end, we apply normalized Lp normalization to aggregate the activation maps into single scores for classification.
1 code implementation • 8 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.
1 code implementation • 14 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).
no code implementations • 19 Jul 2019 • Mathis Hoffmann, Bernd Doll, Florian Talkenberg, Christoph J. Brabec, Andreas K. Maier, Vincent Christlein
We compare our method to the state of the art and show that it is superior in presence of perspective distortion while the performance on images, where the module is roughly coplanar to the detector, is similar to the reference method.
1 code implementation • 8 Jul 2018 • Sergiu Deitsch, Vincent Christlein, Stephan Berger, Claudia Buerhop-Lutz, Andreas Maier, Florian Gallwitz, Christian Riess
Both approaches are trained on 1, 968 cells extracted from high resolution EL intensity images of mono- and polycrystalline PV modules.
1 code implementation • 28 Jun 2018 • Maximilian Seitzer, Guang Yang, Jo Schlemper, Ozan Oktay, Tobias Würfl, Vincent Christlein, Tom Wong, Raad Mohiaddin, David Firmin, Jennifer Keegan, Daniel Rueckert, Andreas Maier
In addition, we introduce a semantic interpretability score, measuring the visibility of the region of interest in both ground truth and reconstructed images, which allows us to objectively quantify the usefulness of the image quality for image post-processing and analysis.
no code implementations • 19 Jun 2018 • Anguelos Nicolaou, Sounak Dey, Vincent Christlein, Andreas Maier, Dimosthenis Karatzas
Embedding data into vector spaces is a very popular strategy of pattern recognition methods.
no code implementations • 29 Jan 2018 • AmirAbbas Davari, Nikolaos Sakaltras, Armin Haeberle, Sulaiman Vesal, Vincent Christlein, Andreas Maier, Christian Riess
In this work, we propose an image processing pipeline that operates on hyperspectral images to separate such layers.
no code implementations • 12 Jan 2018 • Felix Horger, Tobias Würfl, Vincent Christlein, Andreas Maier
Our model has high sampling efficiency and is easily applied to any probability distribution, without the need of further analytical or numerical calculations.
no code implementations • 21 Dec 2017 • Vincent Christlein, Andreas Maier
The encoding of local features is an essential part for writer identification and writer retrieval.
no code implementations • 12 Dec 2017 • AmirAbbas Davari, Tobias Lindenberger, Armin Häberle, Vincent Christlein, Andreas Maier, Christian Riess
In this work, we conducted a survey on different registration algorithms and investigated their suitability for hyperspectral historical image registration applications.
no code implementations • 10 Dec 2017 • AmirAbbas Davari, Armin Häberle, Vincent Christlein, Andreas Maier, Christian Riess
High-resolution imaging has delivered new prospects for detecting the material composition and structure of cultural treasures.
no code implementations • 25 May 2017 • Vincent Christlein, Martin Gropp, Stefan Fiel, Andreas Maier
The focus lies on the ICDAR17 competition dataset on historical document writer identification (Historical-WI).