Our research interests focuses on medical imaging, image and audio processing, digital humanities, and interpretable machine learning and the use of known operators.
Research projects
Image Analysis and Fusion
Learning Algorithms for Medical Big Data Analysis (LAMBDA)
Magnetic Resonance Imaging (MRI)
Speech Processing and Understanding
Development of a guideline for the three-dimensional non-destructive acquisition of manuscripts
Intelligent MR Diagnosis of the Liver by Linking Model and Data-driven Processes (iDELIVER)
Molecular Assessment of Signatures ChAracterizing the Remission of Arthritis
Improved dual energy imaging using machine learning
Current projects
Temporally resolved 3-D retinal blood flow quantification using advanced motion correction
and signal reconstruction in optical coherence tomography angiography
(Third Party Funds Single)
Term: since 15. November 2022 Funding source: DFG-Einzelförderung / Sachbeihilfe (EIN-SBH)
Die optische Kohärenztomographie (OCT) erzeugt volumetrische 3-D-Bilder von Gewebe mit Mikrometerauflösung, indem sie einen Laserstrahl zum Scannen verwendet und die Amplitude und Zeitverzögerung von zurückgestreutem Licht misst. Die OCT hat einen großen Einfluss auf die Augenheilkunde und wurde zu einer Standard-Bildgebungsmodalität für die Diagnose, die Überwachung des Krankheitsverlaufs und das Ansprechen auf die Behandlung sowie für die Untersuchung der Pathogenese von Krankheiten wie diabetischer Retinopathie, altersbedingter Makuladegeneration und Glaukom. Die jüngste Entwicklung der OCT-Angiographie (OCTA) hat die grundlegende und klinische Forschung dramatisch beschleunigt. OCTA führt eine tiefenaufgelöste (3-D) Bildgebung der retinalen Mikrovaskulatur durch, indem es wiederholt die gleiche Netzhautposition abbildet und den Bewegungskontrast von sich bewegenden Blutzellen erkennt. Im Vergleich zu herkömmlichen Ansätzen, die auf injizierten Kontrastmitteln basieren, hat OCTA den Vorteil, dass es nicht invasiv ist, sodass die Bildgebung bei jedem Patientenbesuch durchgeführt werden kann, was Längsschnittstudien ermöglicht. Allerdings hat OCTA auch einige Einschränkungen. Da eine wiederholte Bildgebung erforderlich ist, um den Blutfluss zu erkennen, sind die Aufnahmezeiten lang und die Daten können durch Augenbewegungen und Bildartefakte verzerrt werden, was eine quantitative Längsschnittanalyse erschwert. OCTA-Algorithmen können das Vorhandensein eines Blutflusses erkennen, sind jedoch nur begrenzt in der Lage, subtile Veränderungen des Flusses aufzulösen, die frühe Anzeichen einer Krankheit sein können. Zeitliche Schwankungen des Flusses, die durch den Herzzyklus oder die funktionelle Reaktion der Netzhaut verursacht werden, sind schwer zu untersuchen. Wir schlagen vor, ein neues Framework für OCTA zu entwickeln, das eine Bewegungskorrektur auf Kapillarebene ermöglicht, Blutflussgeschwindigkeiten differenziert und eine Analyse auf mehreren Zeitskalen ermöglicht (4-D OCTA). Die Fähigkeit, über die Visualisierung der Mikrovaskulatur hinauszugehen und den Fluss und seine zeitlichen Schwankungen zu beurteilen, ermöglicht die Beurteilung subtiler Beeinträchtigungen der mikrovaskulären Perfusion sowie des Herzzyklus und der Reaktion auf funktionelle Stimulation. In Kombination mit der vaskulären strukturellen Bildgebung versprechen diese Fortschritte, neue Krankheitsmarker in früheren Krankheitsstadien bereitzustellen, eine genauere Messung des Krankheitsverlaufs und des Ansprechens auf die Therapie in pharmazeutischen Studien zu ermöglichen und zur Aufklärung der Pathogenese bei Netzhauterkrankungen beizutragen.
Although OCR-D made huge progress in the last project phase in providing OCR for early printed books, it still faces two major problems: The huge variety of the material makes it extremely challenging to use generic OCR-models. Yet, selecting specific models is not possible as the sheer amount of material prevents a fully automatic workflow. This situation is further complicated by the lack of appropriate OCR training data. Current data sets consist overwhelmingly of texts in Fraktur, especially from the 19th century. This completely neglects the large typographic variety displayed by printing in the three previous centuries. Therefore, and in response to the demand from SLUB Dresden and ULB Halle, we propose to improve the current situation significantly1) fine tuning our font group recognition system to such a degree that it can be used at character level;2) transcribing more specific OCR training data for the 16th-18th century, which includes popular fonts such as Schwabacher, other bastards and old Fraktur styles; 3) training font-specific OCR models as well as integrated models that recognise both typeface and text simultaneously. This approach has ensured in other contexts that the network performs better on both individual tasks, as we can thus reduce overfitting during training. This project will improve OCR quality significantly, especially for books in non-Fraktur fonts. It will also provide a training data set of very high quality that can be reused in long term. Finally, the project will provide a more fine-grained font recognition tool that, beyond enabling font-specific OCR, also has important applications in text attribute recognition and layout analysis.
The project examines the use and further development of machine learning methods for MR image reconstruction and for the classification of liver lesions. Based on a comparison model and data-driven image reconstruction methods, these are to be systematically linked in order to enable high acceleration without sacrificing diagnostic value. In addition to the design of suitable networks, research should also be carried out to determine whether metadata (e.g. age of the patient) can be incorporated into the reconstruction. Furthermore, suitable classification algorithms on an image basis are to be developed and the potential of direct classification on the raw data is to be explored. In the long term, intelligent MR diagnostics can significantly increase the efficiency of use of MR hardware, guarantee better patient care and set new impulses in medical technology.
Barnhill, A., Bergler, C., Maier, A., & Nöth, E. (2023). Orca is VAE – Variational Autoencoders for Bioacoustic Signal Encoding. In Proceedings of the Annual Conference of the International Speech Communication Association, INTERSPEECH 2023 -- UNDER REVIEW. Dublin, Ireland: International Speech Communication Association.
Aust, O., Thies, M., Weidner, D., Wagner, F., Pechmann, S., Mill, L.,... Grüneboom, A. (2022). Tibia Cortical Bone Segmentation in Micro-CT and X-ray Microscopy Data Using a Single Neural Network. In Klaus Maier-Hein, Thomas M. Deserno, Heinz Handels, Andreas Maier, Christoph Palm, Thomas Tolxdorff (Eds.), Informatik aktuell (pp. 333-338). Heidelberg, DE: Springer Science and Business Media Deutschland GmbH.
Bayerl, S.P., Wagner, D., Nöth, E., Bocklet, T., & Riedhammer, K. (2022). The Influence of Dataset Partitioning on Dysfluency Detection Systems. In Petr Sojka, Aleš Horák, Ivan Kopeček, Karel Pala (Eds.), Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (pp. 423-436). Brno, CZ: Springer Science and Business Media Deutschland GmbH.
Bayerl, S.P., Wagner, D., Nöth, E., & Riedhammer, K. (2022). Detecting Dysfluencies in Stuttering Therapy Using wav2vec 2.0. In Proceedings of the Annual Conference of the International Speech Communication Association, INTERSPEECH (pp. 2868-2872). Incheon, KR: International Speech Communication Association.
Christlein, V., Marthot-Santaniello, I., Mayr, M., Nicolaou, A., & Seuret, M. (2022). Writer Retrieval and Writer Identification in Greek Papyri. In Springer (Eds.), Intertwining Graphonomics with Human Movements (pp. 76-89). Las Palmas de Gran Canaria, ES.
El-Ghoussani, A., Rodríguez Salas, D., Seuret, M., & Maier, A. (2022). GAN-based Augmentation of Mammograms to Improve Breast Lesion Detection. In Klaus Maier-Hein, Thomas M. Deserno, Heinz Handels, Andreas Maier, Christoph Palm, Thomas Tolxdorff (Eds.), Informatik aktuell (pp. 321-326). Heidelberg, DEU: Springer Science and Business Media Deutschland GmbH.
Escobar-Grisales, D., Rios-Urrego, C.D., Gallo-Aristizabal, J.D., Lopez-Santander, D.A., Calvo-Ariza, N.R., Nöth, E., & Orozco-Arroyave, J.R. (2022). Colombian Dialect Recognition from Call-Center Conversations Using Fusion Strategies. In APPLIED COMPUTER SCIENCES IN ENGINEERING, WEA 2022 (pp. 54-65). Bogota, COLOMBIA: CHAM: SPRINGER INTERNATIONAL PUBLISHING AG.
Fu, W., Husvogt, L., Breininger, K., Schaffert, R., Abu-Qamar, O., Fujimoto, J.G., & Maier, A. (2022). Form Follows Function: Smart Network Design Enables Zero-shot Network Reuse. In Klaus Maier-Hein, Thomas M. Deserno, Heinz Handels, Andreas Maier, Christoph Palm, Thomas Tolxdorff (Eds.), Informatik aktuell (pp. 121-126). Heidelberg, DEU: Springer Science and Business Media Deutschland GmbH.
Gouet-Brunet, V., Kosti, R.V., & Weng, L. (2022). SUMAC'22 Chairs' Welcome. In SUMAC 2022 - Proceedings of the 4th ACM International Workshop on Structuring and Understanding of Multimedia heritAge Contents (pp. III-). Lisboa, PT: Association for Computing Machinery, Inc.
Gu, M., Vesal, S., Kosti, R.V., & Maier, A. (2022). Few-shot Unsupervised Domain Adaptation for Multi-modal Cardiac Image Segmentation. In Klaus Maier-Hein, Thomas M. Deserno, Heinz Handels, Andreas Maier, Christoph Palm, Thomas Tolxdorff (Eds.), Informatik aktuell (pp. 20-25). Heidelberg, DEU: Springer Science and Business Media Deutschland GmbH.
Hernandez, A., Klumpp, P., Das, B.K., Maier, A., & Yang, S.H. (2022). Autoblog 2021: The Importance of Language Models for Spontaneous Lecture Speech. In Petr Sojka, Aleš Horák, Ivan Kopeček, Karel Pala (Eds.), Text, Speech, and Dialogue 25th International Conference, TSD 2022, Brno, Czech Republic, September 6–9, 2022, Proceedings (pp. 291-300). Brno, Czech Republic, CZ: Springer Nature Switzerland AG: Springer Cham.
Kunzmann, S., Marzahl, C., Denzinger, F., Bertram, C., Klopfleisch, R., Breininger, K.,... Maier, A. (2022). First Steps on Gamification of Lung Fluid Cells Annotations in the Flower Domain. In Klaus Maier-Hein, Thomas M. Deserno, Heinz Handels, Andreas Maier, Christoph Palm, Thomas Tolxdorff (Eds.), Informatik aktuell (pp. 223-228). Heidelberg, DEU: Springer Science and Business Media Deutschland GmbH.
Mattick, A., Mayr, M., Maier, A., & Christlein, V. (2022). Is Multitask Learning Always Better? In Seiichi Uchida, Elisa Barney, Véronique Eglin (Eds.), Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (pp. 674-687). La Rochelle, FR: Springer Science and Business Media Deutschland GmbH.
Mayr, M., Felker, A., Maier, A., & Christlein, V. (2022). Combining Visual and Linguistic Models for a Robust Recipient Line Recognition in Historical Documents. In Seiichi Uchida, Elisa Barney, Véronique Eglin (Eds.), Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (pp. 598-612). La Rochelle, FRA: Springer Science and Business Media Deutschland GmbH.
Melsheimer, B., Jahn, A., Putnings, M., Valianos, S., & Walther, M. (2022). Towards a CRIS-integrated solution for University Press workflows. In Proceedings of the CRIS2022: 15th International Conference on Current Research Information Systems. Dubrovnik, HR.
Nikolaidou, K., Upadhyay, R., Seuret, M., & Liwicki, M. (2022). Investigating the Effect of Using Synthetic and Semi-synthetic Images for Historical Document Font Classification. In Seiichi Uchida, Elisa Barney, Véronique Eglin (Eds.), Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (pp. 613-626). La Rochelle, FRA: Springer Science and Business Media Deutschland GmbH.
Pérez Toro, P.A., Klumpp, P., Hernandez, A., Arias Vergara, T., Lillo, P., Slachevsky, A.,... Orozco Arroyave, J.R. (2022). Alzheimer's Detection from English to Spanish Using Acoustic and Linguistic Embeddings. In Proceedings of the Annual Conference of the International Speech Communication Association, INTERSPEECH (pp. 2483-2487). Incheon, KR: International Speech Communication Association.
Pérez-Toro, P.A., Klumpp, P., Vasquez-Correa, J.C., Schuster, M., Nöth, E., Orozco-Arroyave, J.R., & Arias Vergara, T. (2022). 50 Shades of Gray: Effect of the Color Scale for the Assessment of Speech Disorders. In Petr Sojka, Aleš Horák, Ivan Kopeček, Karel Pala (Eds.), Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (pp. 352-363). Brno, CZE: Springer Science and Business Media Deutschland GmbH.
Rao, D., Maass, N., Dennerlein, F., Maier, A., & Huang, Y. (2022). Machine Learning-based Detection of Spherical Markers in CT Volumes. In Klaus Maier-Hein, Thomas M. Deserno, Heinz Handels, Andreas Maier, Christoph Palm, Thomas Tolxdorff (Eds.), Informatik aktuell (pp. 51-56). Heidelberg, DEU: Springer Science and Business Media Deutschland GmbH.
Rios-Urrego, C.D., Moreno-Acevedo, S.A., Nöth, E., & Orozco Arroyave, J.R. (2022). End-to-End Parkinson’s Disease Detection Using a Deep Convolutional Recurrent Network. In Petr Sojka, Aleš Horák, Ivan Kopeček, Karel Pala (Eds.), Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (pp. 326-338). Brno, CZ: Springer Science and Business Media Deutschland GmbH.
Schlereth, M., Stromer, D., Breininger, K., Wagner, A., Tan, L., Maier, A., & Knieling, F. (2022). Automatic Classification of Neuromuscular Diseases in Children Using Photoacoustic Imaging. In Klaus Maier-Hein, Thomas M. Deserno, Heinz Handels, Andreas Maier, Christoph Palm, Thomas Tolxdorff (Eds.), Informatik aktuell (pp. 285-290). Heidelberg, DEU: Springer Science and Business Media Deutschland GmbH.
Sukesh, R., Seuret, M., Nicolaou, A., Mayr, M., & Christlein, V. (2022). A Fair Evaluation of Various Deep Learning-Based Document Image Binarization Approaches. In Seiichi Uchida, Elisa Barney, Véronique Eglin (Eds.), Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (pp. 771-785). La Rochelle, FRA: Springer Science and Business Media Deutschland GmbH.
Wilm, F., Marzahl, C., Breininger, K., & Aubreville, M. (2022). Domain Adversarial RetinaNet as a Reference Algorithm for the MItosis DOmain Generalization Challenge. In Marc Aubreville, David Zimmerer, Mattias Heinrich (Eds.), Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (pp. 5-13). Strasbourg, FRA: Springer Science and Business Media Deutschland GmbH.
Yoon, S.S., Fischer, C., Toupin, S., Pezel, T., Garot, J., Wetzl, J.,... Giese, D. (2022). Fully automatic AI-based extraction of mitral valve motion parameters on long axis CINE images – validation and application on N=2000 patient datasets. Paper presentation at Society for Cardiovascular Magnetic Resonance 25th Annual Scientific Sessions, Fort Lauderdale, US.
Yoon, S.S., Fischer, C., Toupin, S., Pezel, T., Garot, J., Wetzl, J.,... Giese, D. (2022). Fully automatic AI-based valve motion parameter extraction on long axis CINE images – application on N=11000 patient datasets. Paper presentation at Artificial Intelligence in Cardiovascular Magnetic Resonance Imaging - A Joint Summit of the EACVI and SCMR, London, GB.
Yoon, S.S., Schmidt, M., Rick, M., Chitiboi, T., Sharma, P., Emrich, T.,... Maier, A. (2022). Automated Time Adjusted Myocardial Inversion Time Selection for Late Gadolinium Enhancement Imaging – Validation and Application on Patient Datasets. Poster presentation at Joint Annual Meeting ISMRM-ESMRMB & ISMRT 31st Annual Meeting, London, GB.
Zippert, P., Seuret, M., Maier, A., & Hausotte, T. (2022). Influence of X-Ray Radiation on Historical Paper. In Proceedings of the 11th Conference on Industrial Computed Tomography. Wels, Austria, AT.
tom Dieck, T., Pérez Toro, P.A., Arias Vergara, T., Nöth, E., & Klumpp, P. (2022). Wav2vec behind the Scenes: How end2end Models learn Phonetics. In Proceedings of the Annual Conference of the International Speech Communication Association, INTERSPEECH (pp. 5130-5134). Incheon, KR: International Speech Communication Association.
Öttl, M., Mönius, J., Marzahl, C., Rübner, M., Geppert, C., Hartmann, A.,... Breininger, K. (2022). Superpixel Pre-segmentation of HER2 Slides for Efficient Annotation. In Klaus Maier-Hein, Thomas M. Deserno, Heinz Handels, Andreas Maier, Christoph Palm, Thomas Tolxdorff (Eds.), Informatik aktuell (pp. 254-259). Heidelberg, DEU: Springer Science and Business Media Deutschland GmbH.
Bertram, C.A., Donovan, T.A., Tecilla, M., Bartenschlager, F., Fragoso, M., Wilm, F.,... Aubreville, M. (2021). Dataset on Bi- and Multi-nucleated Tumor Cells in Canine Cutaneous Mast Cell Tumors. In Christoph Palm, Heinz Handels, Klaus Maier-Hein, Thomas M. Deserno, Andreas Maier, Thomas Tolxdorff (Eds.), Informatik aktuell (pp. 134-139). Regensburg, DE: Springer Science and Business Media Deutschland GmbH.
Chen, S., Stromer, D., Alnasser Alabdalrahim, H., Schwab, S., Weih, M., & Maier, A. (2021). Abstract: Automatic Dementia Screening and Scoring by Applying Deep Learning on Clock-drawing Tests. In Christoph Palm, Heinz Handels, Klaus Maier-Hein, Thomas M. Deserno, Andreas Maier, Thomas Tolxdorff (Eds.), Informatik aktuell (pp. 289-). Regensburg, DE: Springer Science and Business Media Deutschland GmbH.
Christlein, V., Weichselbaumer, N., Limbach, S., & Seuret, M. (2021). Proof of Concept: Automatic Type Recognition. In Reussner RH, Koziolek A, Heinrich R (Eds.), INFORMATIK 2020 (pp. 1307-1316). Gesellschaft für Informatik, Bonn.
Denzinger, F., Wels, M., Breininger, K., Gülsün, M.A., Schöbinger, M., André, F.,... Maier, A. (2021). Abstract: Automatic CAD-RADS Scoring using Deep Learning. In Christoph Palm, Heinz Handels, Klaus Maier-Hein, Thomas M. Deserno, Andreas Maier, Thomas Tolxdorff (Eds.), Informatik aktuell (pp. 104-). Regensburg, DEU: Springer Science and Business Media Deutschland GmbH.
Denzinger, F., Wels, M., Hopfgartner, C., Lu, J., Schöbinger, M., Maier, A., & Sühling, M. (2021). Coronary Plaque Analysis for CT Angiography Clinical Research. In Christoph Palm, Heinz Handels, Klaus Maier-Hein, Thomas M. Deserno, Andreas Maier, Thomas Tolxdorff (Eds.), Informatik aktuell (pp. 223-228). Regensburg, DEU: Springer Science and Business Media Deutschland GmbH.
Escobar-Grisales, D., Vasquez Correa, J., & Orozco Arroyave, J.R. (2021). Gender Recognition in Informal and Formal Language Scenarios via Transfer Learning. In Juan Carlos Figueroa-García, Yesid Díaz-Gutierrez, Elvis Eduardo Gaona-García, Alvaro David Orjuela-Cañón (Eds.), Communications in Computer and Information Science (pp. 171-179). Virtual, Online: Springer Science and Business Media Deutschland GmbH.
Felsner, L., Syben, C., Maier, A., & Riess, C. (2021). Helical Dark-field Fiber Reconstruction. In Proceedings of the International Meeting on Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine (Fully3D).
Fu, W., Mill, L., Seitz, S., Geimer, T., Kling, L., Possart, D.,... Maier, A. (2021). Towards Mouse Bone X-ray Microscopy Scan Simulation. In Christoph Palm, Heinz Handels, Klaus Maier-Hein, Thomas M. Deserno, Andreas Maier, Thomas Tolxdorff (Eds.), Informatik aktuell (pp. 128-133). Regensburg, DE: Springer Science and Business Media Deutschland GmbH.
Hoffmann, M., Hepp, J., Doll, B., Buerhop-Lutz, C., Peters, I.M., Brabec, C.,... Christlein, V. (2021). Module-Power Prediction from PL Measurements using Deep Learning. In Proceedings of the IEEE Photovoltaic Specialists Conference. Fort Lauderdale, FL, USA: IEEE.
Hoppe, E., Wetzl, J., Roser, P., Felsner, L., Preuhs, A., & Maier, A. (2021). 2D Respiration Navigation Framework for 3D Continuous Cardiac Magnetic Resonance Imaging. In Christoph Palm, Heinz Handels, Klaus Maier-Hein, Thomas M. Deserno, Andreas Maier, Thomas Tolxdorff (Eds.), Informatik aktuell (pp. 158-163). Regensburg, DE: Springer Science and Business Media Deutschland GmbH.
Husvogt, L., Ploner, S., Chen, S., Stromer, D., Schottenhamml, J., Alibhai, Y.,... Maier, A. (2021). Abstract: Maximum A-posteriori Signal Recovery for OCT Angiography Image Generation. In Christoph Palm, Heinz Handels, Klaus Maier-Hein, Thomas M. Deserno, Andreas Maier, Thomas Tolxdorff (Eds.), Informatik aktuell (pp. 261-). Regensburg, DE: Springer Science and Business Media Deutschland GmbH.
Jaganathan, S., Wang, J., Borsdorf, A., & Maier, A. (2021). Learning the Update Operator for 2D/3D Image Registration. In Christoph Palm, Heinz Handels, Klaus Maier-Hein, Thomas M. Deserno, Andreas Maier, Thomas Tolxdorff (Eds.), Informatik aktuell (pp. 117-122). Regensburg, DE: Springer Science and Business Media Deutschland GmbH.
Maier, J., Nitschke, M., Choi, J.H., Gold, G., Fahrig, R., Eskofier, B., & Maier, A. (2021). Inertial Measurements for Motion Compensation in Weight-bearing Cone-beam CT of the Knee. In Christoph Palm, Heinz Handels, Klaus Maier-Hein, Thomas M. Deserno, Andreas Maier, Thomas Tolxdorff (Eds.), Informatik aktuell (pp. 336-). Regensburg, DE: Springer Science and Business Media Deutschland GmbH.
Maier, J., Schottenhamml, J., Madhu, P., da Costa, C.A., & Maier, A. (2021). Analysis of Interventional Workflow Phases based on Image Classification. In 65th Annual Meeting of the German Association for Medical Informatics, Biometry and Epidemiology (GMDS). Berlin (online conference), DE.
Martín Vicario, C., Kordon, F.J., Denzinger, F., Weiten, M., Thomas, S., Kausch, L.,... Kunze, H. (2021). Automatic Plane Adjustment in Surgical Cone Beam CT-volumes. In Christoph Palm, Heinz Handels, Klaus Maier-Hein, Thomas M. Deserno, Andreas Maier, Thomas Tolxdorff (Eds.), Informatik aktuell (pp. 170-). Regensburg, DE: Springer Science and Business Media Deutschland GmbH.
Marzahl, C., Aubreville, M., Bertram, C.A., Stayt, J., Jasensky, A.K., Bartenschlager, F.,... Maier, A. (2021). Abstract: Deep Learning-based Quantification of Pulmonary Hemosiderophages in Cytology Slides. In Christoph Palm, Heinz Handels, Klaus Maier-Hein, Thomas M. Deserno, Andreas Maier, Thomas Tolxdorff (Eds.), Informatik aktuell (pp. 48-). Regensburg, DE: Springer Science and Business Media Deutschland GmbH.
Marzahl, C., Bertram, C.A., Wilm, F., Voigt, J., Barton, A.K., Klopfleisch, R.,... Aubreville, M. (2021). Cell Detection for Asthma on Partially Annotated Whole Slide Images: Learning to be EXACT. In Christoph Palm, Heinz Handels, Klaus Maier-Hein, Thomas M. Deserno, Andreas Maier, Thomas Tolxdorff (Eds.), Informatik aktuell (pp. 147-152). Regensburg, DE: Springer Science and Business Media Deutschland GmbH.
Marzahl, C., Wilm, F., Dressler, F.F., Tharun, L., Perner, S., Bertram, C.A.,... Breininger, K. (2021). Robust Quad-Tree based Registration on Whole Slide Images. In Proceedings of the MICCAI Computational Pathlogy (COMPAY) Workshop (pp. 181-190).
Mattick, A., Mayr, M., Seuret, M., Maier, A., & Christlein, V. (2021). SmartPatch: Improving Handwritten Word Imitation with Patch Discriminators. In Josep Lladós, Daniel Lopresti, Seiichi Uchida (Eds.), Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (pp. 268-283). Lausanne, CHE: Springer Science and Business Media Deutschland GmbH.
Meister, F., Passerini, T., Audigier, C., Lluch, È., Mihalef, V., Ashikaga, H.,... Mansi, T. (2021). Graph Convolutional Regression of Cardiac Depolarization from Sparse Endocardial Maps. In Esther Puyol Anton, Mihaela Pop, Maxime Sermesant, Victor Campello, Alain Lalande, Karim Lekadir, Avan Suinesiaputra, Oscar Camara, Alistair Young (Eds.), Statistical Atlases and Computational Models of the Heart. M&Ms and EMIDEC Challenges. (pp. 23-34).
Naderi Boldaji, H., Patwari, M., Reymann, M., Gutjahr, R., Raupach, R., & Maier, A. (2021). Deep Learning based Model Observers for Multi - Modal Imaging. In Proceedings of the 16th International Meeting on Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine. Leuven, Belgium, BE.
Pérez Toro, P.A., Vasquez Correa, J., Arias Vergara, T., Klumpp, P., Sierra-Castrillón, M., Roldán-López, M.E.,... Nöth, E. (2021). Acoustic and Linguistic Analyses to Assess Early-Onset and Genetic Alzheimer's Disease. In Proceedings of the ICASSP 2021-2021 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) (pp. 8338-8342). IEEE.
Pérez Toro, P.A., Vásquez-Correa, J.C., Arias Vergara, T., Klumpp, P., Schuster, M., Nöth, E., & Orozco-Arroyave, J.R. (2021). Emotional State Modeling for the Assessment of Depression in Parkinson’s Disease. In Kamil Ekštein, František Pártl, Miloslav Konopík (Eds.), Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (pp. 457-468). Olomouc, CZE: Springer Science and Business Media Deutschland GmbH.
Rajput, J.R., Shetty, K., Maier, A., & Berger, M. (2021). Table Motion Detection in Interventional Coronary Angiography. In Christoph Palm, Heinz Handels, Klaus Maier-Hein, Thomas M. Deserno, Andreas Maier, Thomas Tolxdorff (Eds.), Informatik aktuell (pp. 55-60). Regensburg, DE: Springer Science and Business Media Deutschland GmbH.
Reimann, M., Fu, W., & Maier, A. (2021). Novel Evaluation Metrics for Vascular Structure Segmentation. In Christoph Palm, Heinz Handels, Klaus Maier-Hein, Thomas M. Deserno, Andreas Maier, Thomas Tolxdorff (Eds.), Informatik aktuell (pp. 80-85). Regensburg, DE: Springer Science and Business Media Deutschland GmbH.
Rios-Urrego, C.D., Vásquez-Correa, J.C., Orozco-Arroyave, J.R., & Nöth, E. (2021). Is There Any Additional Information in a Neural Network Trained for Pathological Speech Classification? In Kamil Ekštein, František Pártl, Miloslav Konopík (Eds.), Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (pp. 435-447). Olomouc, CZ: Springer Science and Business Media Deutschland GmbH.
Roser, P., Felsner, L., Maier, A., & Riess, C. (2021). Learning the Inverse Weighted Radon Transform. In Christoph Palm, Heinz Handels, Klaus Maier-Hein, Thomas M. Deserno, Andreas Maier, Thomas Tolxdorff (Eds.), Informatik aktuell (pp. 49-54). Regensburg, DE: Springer Science and Business Media Deutschland GmbH.
Roser, P., Zhong, X., Birkhold, A., Preuhs, A., Syben, C., Hoppe, E.,... Maier, A. (2021). Abstract: Simultaneous Estimation of X-ray Back-scatter and Forward-scatter using Multi-task Learning. In Christoph Palm, Heinz Handels, Klaus Maier-Hein, Thomas M. Deserno, Andreas Maier, Thomas Tolxdorff (Eds.), Informatik aktuell (pp. 262-). Regensburg, DE: Springer Science and Business Media Deutschland GmbH.
Seuret, M., Nicolaou, A., Rodríguez-Salas, D., Weichselbaumer, N., Stutzmann, D., Mayr, M.,... Christlein, V. (2021). ICDAR 2021 Competition on Historical Document Classification. In Josep Lladós, Daniel Lopresti, Seiichi Uchida (Eds.), Document Analysis and Recognition – ICDAR 2021 (pp. 618-634). Lausanne, CHE: Springer Science and Business Media Deutschland GmbH.
Shetty, K., Birkhold, A., Strobel, N., Jaganathan, S., Kowarschik, M., Maier, A., & Egger, B. (2021). Deep Learning Compatible Differentiable X-ray Projections for Inverse Rendering. In Christoph Palm, Heinz Handels, Klaus Maier-Hein, Thomas M. Deserno, Andreas Maier, Thomas Tolxdorff (Eds.), Informatik aktuell (pp. 290-295). Regensburg, DE: Springer Science and Business Media Deutschland GmbH.
Theelke, L., Wilm, F., Marzahl, C., Bertram, C.A., Klopfleisch, R., Maier, A.,... Breininger, K. (2021). Iterative Cross-Scanner Registration for Whole Slide Images. In 2021 IEEE/CVF INTERNATIONAL CONFERENCE ON COMPUTER VISION WORKSHOPS (ICCVW 2021) (pp. 582-590). LOS ALAMITOS: IEEE COMPUTER SOC.
Tripathi, P., Obler, R., Maier, A., & Janssen, H. (2021). A Novel Trilateral Filter for Digital Subtraction Angiography. In Christoph Palm, Heinz Handels, Klaus Maier-Hein, Thomas M. Deserno, Andreas Maier, Thomas Tolxdorff (Eds.), Informatik aktuell (pp. 310-315). Regensburg, DE: Springer Science and Business Media Deutschland GmbH.
Wallraff, S., Vesal, S., Syben, C., Lutz, R., & Maier, A. (2021). Age Estimation on Panoramic Dental X-ray Images using Deep Learning. In Christoph Palm, Heinz Handels, Klaus Maier-Hein, Thomas M. Deserno, Andreas Maier, Thomas Tolxdorff (Eds.), Informatik aktuell (pp. 186-191). Regensburg, DE: Springer Science and Business Media Deutschland GmbH.
Wilm, F., Bertram, C.A., Marzahl, C., Bartel, A., Donovan, T.A., Assenmacher, C.A.,... Aubreville, M. (2021). Influence of Inter-Annotator Variability on Automatic Mitotic Figure Assessment. In Christoph Palm, Heinz Handels, Klaus Maier-Hein, Thomas M. Deserno, Andreas Maier, Thomas Tolxdorff (Eds.), Informatik aktuell (pp. 241-246). Regensburg, DE: Springer Science and Business Media Deutschland GmbH.
Ahmed, J., Vesal, S., Durlak, F., Kaergel, R., Ravikumar, N., Rémy-Jardin, M., & Maier, A. (2020). COPD classification in CT images using a 3D convolutional neural network. In Thomas Tolxdorff, Thomas M. Deserno, Heinz Handels, Andreas Maier, Klaus H. Maier-Hein, Christoph Palm (Eds.), Informatik aktuell (pp. 39-45). Berlin, DE: Springer.
Argüello-Vélez, P., Arias-Vergara, T., González-Rátiva, M.C., Orozco-Arroyave, J.R., Nöth, E., & Schuster, M.E. (2020). Acoustic characteristics of vot in plosive consonants produced by parkinson’s patients. In Petr Sojka, Ivan Kopecek, Karel Pala, Aleš Horák (Eds.), Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (pp. 303-311). Brno, CZ: Springer Science and Business Media Deutschland GmbH.
Bergler, C., Schmitt, M., Maier, A., Smeele, S., Barth, V., & Nöth, E. (2020). ORCA-CLEAN: A Deep Denoising Toolkit for Killer Whale Communication. In Proceedings of the Annual Conference of the International Speech Communication Association, INTERSPEECH 2020 (pp. 1136-1140). Shanghai, China: International Speech Communication Association.
Bertram, C.A., Veta, M., Marzahl, C., Stathonikos, N., Maier, A., Klopfleisch, R., & Aubreville, M. (2020). Are Pathologist-Defined Labels Reproducible? Comparison of the TUPAC16 Mitotic Figure Dataset with an Alternative Set of Labels. In Jaime Cardoso, Wilson Silva, Ricardo Cruz, Hien Van Nguyen, Badri Roysam, Nicholas Heller, Pedro Henriques Abreu, Jose Pereira Amorim, Ivana Isgum, Vishal Patel, Kevin Zhou, Steve Jiang, Ngan Le, Khoa Luu, Raphael Sznitman, Veronika Cheplygina, Samaneh Abbasi, Diana Mateus, Emanuele Trucco (Eds.), Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (pp. 204-213). Lima, PE: Springer Science and Business Media Deutschland GmbH.
Bootwala, A., Breininger, K., Maier, A., & Christlein, V. (2020). Assistive Diagnosis in Opthalmology Using Deep Learning-Based Image Retrieval. In Thomas Tolxdorff; Thomas M. Deserno; Heinz Handels; Andreas Maier; Klaus H. Maier-Hein; Christoph Palm (Eds.), Bildverarbeitung für die Medizin 2020. (pp. 144-149). Wiesbaden: Springer Vieweg.
Breininger, K., Pfister, M., Kowarschik, M., & Maier, A. (2020). Move Over There: One-Click Deformation Correction for Image Fusion During Endovascular Aortic Repair. In Anne L. Martel, Purang Abolmaesumi, Danail Stoyanov, Diana Mateus, Maria A. Zuluaga, S. Kevin Zhou, Daniel Racoceanu, Leo Joskowicz (Eds.), Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (pp. 713-723). Lima, PE: Springer Science and Business Media Deutschland GmbH.
Felsner, L., Würfl, T., Syben, C., Roser, P., Preuhs, A., Maier, A., & Riess, C. (2020). Reconstruction of Voxels with Position- and Angle-Dependent Weightings. In Proceedings of the The 6th International Conference on Image Formation in X-Ray Computed Tomography. Online meeting.
Fu, W., Husvogt, L., Ploner, S., Fujimoto, J.G., & Maier, A. (2020). Modularization of deep networks allows cross-modality reuse: lesson learnt. In Thomas Tolxdorff, Thomas M. Deserno, Heinz Handels, Andreas Maier, Klaus H. Maier-Hein, Christoph Palm (Eds.), Informatik aktuell (pp. 274-279). Berlin, DE: Springer.
Gadjimuradov, F., Benkert, T., Nickel, M.D., & Maier, A. (2020). Deep Recurrent Partial Fourier Reconstruction in Diffusion MRI. In Farah Deeba, Patricia Johnson, Tobias Würfl, Jong Chul Ye (Eds.), Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (pp. 38-47). Lima, PE: Springer Science and Business Media Deutschland GmbH.
Gouet-Brunet, V., Khokhlova, M., Kosti, R.V., Chen, L., & Yin, X.C. (2020). SUMAC 20 Chairs Welcome. In SUMAC 2020 - Proceedings of the 2nd Workshop on Structuring and Understanding of Multimedia heritAge Contents (pp. iii-). Association for Computing Machinery, Inc.
Gündel, S., & Maier, A. (2020). Epoch-wise label attacks for robustness against label noise. In Thomas Tolxdorff, Thomas M. Deserno, Heinz Handels, Andreas Maier, Klaus H. Maier-Hein, Christoph Palm (Eds.), Bildverarbeitung für die Medizin 2020 (pp. 287-292). Springer Vieweg.
Hoßbach, J., Husvogt, L., Kraus, M., Fujimoto, J.G., & Maier, A. (2020). Deep OCT angiography image generation for motion artifact suppression. In Thomas Tolxdorff, Thomas M. Deserno, Heinz Handels, Andreas Maier, Klaus H. Maier-Hein, Christoph Palm (Eds.), Informatik aktuell (pp. 248-253). Berlin, DE: Springer.
Huang, Y., Gao, L., Preuhs, A., & Maier, A. (2020). Field of View Extension in Computed Tomography Using Deep Learning Prior. In Andreas Maier, Klaus Hermann Maier-Hein, Thomas Martin Deserno, Heinz Handels, Thomas Tolxdorff (Eds.), Bildverarbeitung für die Medizin: Algorithmen – Systeme – Anwendungen. Berlin, DE: Springer.
Husvogt, L., Ploner, S., Stromer, D., Schottenhamml, J., Moult, E., Fujimoto, J.G., & Maier, A. (2020). Compressed sensing for optical coherence tomography angiography volume generation. In Thomas Tolxdorff, Thomas M. Deserno, Heinz Handels, Andreas Maier, Klaus H. Maier-Hein, Christoph Palm (Eds.), Informatik aktuell (pp. 82-87). Berlin, DE: Springer.
Klumpp, P., Arias Vergara, T., Vasquez Correa, J., Pérez Toro, P.A., Hönig, F.T., Nöth, E., & Orozco-Arroyave, J.-R. (2020). Surgical mask detection with deep recurrent phonetic models. In Proceedings of the 21st Annual Conference of the International Speech Communication Association, INTERSPEECH 2020 (pp. 2057-2061). International Speech Communication Association.
Kordon, F.J., Fischer, P., Privalov, M., Swartman, B., Schnetzke, M., Franke, J.,... Maier, A. (2020, February). Multi-Task Framework for X-Ray Guided Planning in Knee Surgery. Poster presentation at Bildverarbeitung für die Medizin 2020, Berlin, DE.
Maier, J., Nitschke, M., Choi, J.-H., Gold, G., Fahrig, R., Eskofier, B., & Maier, A. (2020). Inertial Measurements for Motion Compensation in Weight-Bearing Cone-Beam CT of the Knee. In Anne L. Martel, Purang Abolmaesumi, Danail Stoyanov, Diana Mateus, Maria A. Zuluaga, S. Kevin Zhou, Daniel Racoceanu, Leo Joskowicz (Eds.), Medical Image Computing and Computer Assisted Intervention – MICCAI 2020. (pp. 14-23).
Maier, J., Rivera Monroy, L., Syben, C., Jeon, Y., Choi, J.-H., Hall, M.,... Maier, A. (2020). Multi-Channel Volumetric Neural Network for Knee Cartilage Segmentation in Cone-Beam CT. In Thomas Tolxdorff, Thomas M. Deserno, Heinz Handels, Andreas Maier, Klaus H. Maier-Hein, Christoph Palm (Eds.), Bildverarbeitung für die Medizin 2020. (pp. 67-72). Wiesbaden: Springer Vieweg.
Marzahl, C., Bertram, C.A., Aubreville, M., Petrick, A., Weiler, K., Gläsel, A.C.,... Maier, A. (2020). Are fast labeling methods reliable? a case study of computer-aided expert annotations on microscopy slides. In Anne L. Martel, Purang Abolmaesumi, Danail Stoyanov, Diana Mateus, Maria A. Zuluaga, S. Kevin Zhou, Daniel Racoceanu, Leo Joskowicz (Eds.), Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (pp. 24-32). Lima, PE: Springer Science and Business Media Deutschland GmbH.
Mayr, M., Stumpf, M., Nicolaou, A., Seuret, M., Maier, A., & Christlein, V. (2020). Spatio-Temporal Handwriting Imitation. In Springer, Cham (Eds.), Proceedings of the European Conference on Computer Vision (pp. 528-543). Online.
Meister, F., Houle, H., Nita, C., Puiu, A., Mihai Itu, L., & Rapaka, S. (2020). Additional clinical applications. In Tommaso Mansi, Tiziano Passerini, Dorin Comaniciu (Eds.), Artificial Intelligence for Computational Modeling of the Heart. (pp. 183-210).
Mihai Itu, L., Meister, F., Sharma, P., & Passerini, T. (2020). Data-driven reduction of cardiac models. In Tommaso Mansi, Tiziano Passerini and Dorin Comaniciu (Eds.), Artificial Intelligence for Computational Modeling of the Heart. (pp. 117-160).
Patwari, M., Gutjahr, R., Raupach, R., & Maier, A. (2020). JBFnet - Low Dose CT Denoising by Trainable Joint Bilateral Filtering. In Martel, A.L., Abolmaesumi, P., Stoyanov, D., Mateus, D., Zuluaga, M.A., Zhou, S.K., Racoceanu, D., Joskowicz, L. (Eds.), Proceedings of the 23rd International Conference on Medical Image Computing and Computer Assisted Surgery (MICCAI) (pp. 506 - 515). Lima, Peru, PE: Springer.
Preuhs, A., Manhart, M., Roser, P., Stimpel, B., Syben, C., Psychogios, M.,... Maier, A. (2020). Deep autofocus with cone-beam CT consistency constraint. In Proceedings of the Bildverarbeitung für die Medizin. Berlin, DE.
Restrepo-Uribe, J.P., Roldan-Vasco, S., Perez-Giraldo, E., Orozco Arroyave, J.R., & Orozco-Duque, A. (2020). Electrophysiological and Mechanical Approaches to the Swallowing Analysis. In Juan Carlos Figueroa-García, Fabián Steven Garay-Rairán, Germán Jairo Hernández-Pérez, Yesid Díaz-Gutierrez (Eds.), Communications in Computer and Information Science (pp. 281-290). Bogota, CO: Springer Science and Business Media Deutschland GmbH.
Reymann, M., Massanes, F., Ritt, P., Cachovan, M., Kuwert, T., Vija, A.H., & Maier, A. (2020, November). Feature Loss After Denoising of SPECT Projection Data using a U-Net. Poster presentation at 2020 IEEE Nuclear Science Symposium and Medical Imaging Conference, Boston, Massachusetts, US.
Roser, P., Zhong, X., Birkhold, A., Preuhs, A., Syben, C., Hoppe, E.,... Maier, A. (2020). Simultaneous Estimation of X-Ray Back-Scatter and Forward-Scatter Using Multi-task Learning. In Anne L. Marte, lPurang Abolmaesumi, Danail Stoyanov, Diana Mateus, Maria A. Zuluaga, S. Kevin Zhou, Daniel Racoceanu, Leo Joskowicz (Eds.), Medical Image Computing and Computer Assisted Intervention – MICCAI 2020. (pp. 199-208).
Schaffert, R., Wang, J., Fischer, P., Borsdorf, A., & Maier, A. (2020). Learning-based misalignment detection for 2-D/3-D overlays. In Thomas Tolxdorff, Thomas M. Deserno, Heinz Handels, Andreas Maier, Klaus H. Maier-Hein, Christoph Palm (Eds.), Informatik aktuell (pp. 230-235). Berlin, DE: Springer.
Schaffert, R., Weiß, M., Wang, J., Borsdorf, A., & Maier, A. (2020). Learning-based correspondence estimation for 2-D/3-D registration. In Thomas Tolxdorff, Thomas M. Deserno, Heinz Handels, Andreas Maier, Klaus H. Maier-Hein, Christoph Palm (Eds.), Informatik aktuell (pp. 222-228). Berlin, DEU: Springer.
Schirrmacher, F., Lorch, B., Stimpel, B., Köhler, T., & Riess, C. (2020). SR²: Super-Resolution With Structure-Aware Reconstruction. In Proceedings of the 2020 IEEE International Conference on Image Processing (ICIP) (pp. 533-537). Online.
Schuller, B., Batliner, A., Bergler, C., Messner, E.-M., Hamilton, A., Amiriparian, S.,... Hantke, S. (2020). The INTERSPEECH 2020 Computational Paralinguistics Challenge: Elderly Emotion, Breathing & Masks. In Proceedings of the Annual Conference of the International Speech Communication Association, INTERSPEECH 2020 (pp. 2042-2046). Shanghai, China: International Speech Communication Association.
Weichselbaumer, N., Seuret, M., Limbach, S., Hinrichsen, L., Maier, A., & Christlein, V. (2020, February). The rapid rise of Fraktur. Paper presentation at 7. Tagung des Verbands Digital Humanities im deutschsprachigen Raum, Paderborn, DE.
Our research interests focuses on medical imaging, image and audio processing, digital humanities, and interpretable machine learning and the use of known operators.
Research projects
Current projects
Temporally resolved 3-D retinal blood flow quantification using advanced motion correction
and signal reconstruction in optical coherence tomography angiography
(Third Party Funds Single)
Funding source: DFG-Einzelförderung / Sachbeihilfe (EIN-SBH)
Die optische Kohärenztomographie (OCT) erzeugt volumetrische 3-D-Bilder von Gewebe mit Mikrometerauflösung, indem sie einen Laserstrahl zum Scannen verwendet und die Amplitude und Zeitverzögerung von zurückgestreutem Licht misst. Die OCT hat einen großen Einfluss auf die Augenheilkunde und wurde zu einer Standard-Bildgebungsmodalität für die Diagnose, die Überwachung des Krankheitsverlaufs und das Ansprechen auf die Behandlung sowie für die Untersuchung der Pathogenese von Krankheiten wie diabetischer Retinopathie, altersbedingter Makuladegeneration und Glaukom. Die jüngste Entwicklung der OCT-Angiographie (OCTA) hat die grundlegende und klinische Forschung dramatisch beschleunigt. OCTA führt eine tiefenaufgelöste (3-D) Bildgebung der retinalen Mikrovaskulatur durch, indem es wiederholt die gleiche Netzhautposition abbildet und den Bewegungskontrast von sich bewegenden Blutzellen erkennt. Im Vergleich zu herkömmlichen Ansätzen, die auf injizierten Kontrastmitteln basieren, hat OCTA den Vorteil, dass es nicht invasiv ist, sodass die Bildgebung bei jedem Patientenbesuch durchgeführt werden kann, was Längsschnittstudien ermöglicht. Allerdings hat OCTA auch einige Einschränkungen. Da eine wiederholte Bildgebung erforderlich ist, um den Blutfluss zu erkennen, sind die Aufnahmezeiten lang und die Daten können durch Augenbewegungen und Bildartefakte verzerrt werden, was eine quantitative Längsschnittanalyse erschwert. OCTA-Algorithmen können das Vorhandensein eines Blutflusses erkennen, sind jedoch nur begrenzt in der Lage, subtile Veränderungen des Flusses aufzulösen, die frühe Anzeichen einer Krankheit sein können. Zeitliche Schwankungen des Flusses, die durch den Herzzyklus oder die funktionelle Reaktion der Netzhaut verursacht werden, sind schwer zu untersuchen. Wir schlagen vor, ein neues Framework für OCTA zu entwickeln, das eine Bewegungskorrektur auf Kapillarebene ermöglicht, Blutflussgeschwindigkeiten differenziert und eine Analyse auf mehreren Zeitskalen ermöglicht (4-D OCTA). Die Fähigkeit, über die Visualisierung der Mikrovaskulatur hinauszugehen und den Fluss und seine zeitlichen Schwankungen zu beurteilen, ermöglicht die Beurteilung subtiler Beeinträchtigungen der mikrovaskulären Perfusion sowie des Herzzyklus und der Reaktion auf funktionelle Stimulation. In Kombination mit der vaskulären strukturellen Bildgebung versprechen diese Fortschritte, neue Krankheitsmarker in früheren Krankheitsstadien bereitzustellen, eine genauere Messung des Krankheitsverlaufs und des Ansprechens auf die Therapie in pharmazeutischen Studien zu ermöglichen und zur Aufklärung der Pathogenese bei Netzhauterkrankungen beizutragen.
Font Group Recognition for Improved OCR
(Third Party Funds Single)
Funding source: DFG-Einzelförderung / Sachbeihilfe (EIN-SBH)
Although OCR-D made huge progress in the last project phase in providing OCR for early printed books, it still faces two major problems: The huge variety of the material makes it extremely challenging to use generic OCR-models. Yet, selecting specific models is not possible as the sheer amount of material prevents a fully automatic workflow. This situation is further complicated by the lack of appropriate OCR training data. Current data sets consist overwhelmingly of texts in Fraktur, especially from the 19th century. This completely neglects the large typographic variety displayed by printing in the three previous centuries. Therefore, and in response to the demand from SLUB Dresden and ULB Halle, we propose to improve the current situation significantly1) fine tuning our font group recognition system to such a degree that it can be used at character level;2) transcribing more specific OCR training data for the 16th-18th century, which includes popular fonts such as Schwabacher, other bastards and old Fraktur styles; 3) training font-specific OCR models as well as integrated models that recognise both typeface and text simultaneously. This approach has ensured in other contexts that the network performs better on both individual tasks, as we can thus reduce overfitting during training. This project will improve OCR quality significantly, especially for books in non-Fraktur fonts. It will also provide a training data set of very high quality that can be reused in long term. Finally, the project will provide a more fine-grained font recognition tool that, beyond enabling font-specific OCR, also has important applications in text attribute recognition and layout analysis.
Intelligent MR Diagnosis of the Liver by Linking Model and Data-driven Processes (iDELIVER)
(Third Party Funds Single)
Funding source: Bundesministerium für Bildung und Forschung (BMBF)
The project examines the use and further development of machine learning methods for MR image reconstruction and for the classification of liver lesions. Based on a comparison model and data-driven image reconstruction methods, these are to be systematically linked in order to enable high acceleration without sacrificing diagnostic value. In addition to the design of suitable networks, research should also be carried out to determine whether metadata (e.g. age of the patient) can be incorporated into the reconstruction. Furthermore, suitable classification algorithms on an image basis are to be developed and the potential of direct classification on the raw data is to be explored. In the long term, intelligent MR diagnostics can significantly increase the efficiency of use of MR hardware, guarantee better patient care and set new impulses in medical technology.
From Micro To Macro: Multiscale Multimodal Data Analysis for Breast Cancer Research
(Third Party Funds Single)
Funding source: Industrie
From Micro To Macro: Multiscale Multimodal Data Analysis for Breast Cancer Research
Recent publications
2023
2022
2021
2020
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