Demo Data from VLDB 2026 / reviewers in the wild / expert
Jens Kowal
dblp:60/2212
· DBLP profile ↗
4ranked-venue papers
0as first author
1since 2021 · last 2025
0009-0007-4936-6141ORCID · corroborated
Domains — the database's venue-derived domains; a paper can count in several
Graphics, computer vision, multimedia, augmented reality and games · 3 · 1 since 2021Applied, interdisciplinary, general and emerging computing · 2Artificial intelligence and machine learning · 1
Expertise — from the expertise taxonomy: the topics of the expert's papers under the CCF categories. A weight counts papers with recency: 1 for a paper about the topic, 0.3 when the topic is its context, halved every five years.
| Artificial intelligence
1 paper |
Segmentation and scene understanding · 100% | |
| Interdisciplinary, comprehensive, and emerging computing
1 paper |
Medical and health informatics · 100% |
Topics — the 1 heaviest of 2, each with the papers that count most for it
| Topic | Weight | Papers | Last | Evidence papers |
|---|---|---|---|---|
Medical and health informatics › medical education
surgical training |
0.3 | 1 | 2025 | WetCat: Enabling Automated Skill Assessment in Wet-Lab Cataract Surgery Videos · ACM Multimedia 2025 |
Methods — techniques the papers use, named apart from their topics
semantic segmentation · 1.7phase annotation · 1.7
| Year | Publication | Venue | Position |
|---|---|---|---|
| 2025 | WetCat: Enabling Automated Skill Assessment in Wet-Lab Cataract Surgery VideosabstractTo meet the growing demand for systematic surgical training, wet-lab environments have become indispensable platforms for hands-on practice in ophthalmology. Yet, traditional wet-lab training depends heavily on manual performance evaluations, which are labor-intensive, time-consuming, and often subject to variability. Recent advances in computer vision offer promising avenues for automated skill assessment, enhancing both the efficiency and objectivity of surgical education. Despite notable progress in ophthalmic surgical datasets, existing resources predominantly focus on real surgeries or isolated tasks, falling short of supporting comprehensive skill evaluation in controlled wet-lab settings. To address these limitations, we introduce WetCat, the first dataset of wet-lab cataract surgery videos specifically curated for automated skill assessment. WetCat comprises high-resolution recordings of surgeries performed by trainees on artificial eyes, featuring comprehensive phase annotations and semantic segmentations of key anatomical structures. These annotations are meticulously designed to facilitate skill assessment during the critical capsulorhexis and phacoemulsification phases, adhering to standardized surgical skill assessment frameworks. By focusing on these essential phases, WetCat enables the development of interpretable, AI-driven evaluation tools aligned with established clinical metrics. This dataset lays a strong foundation for advancing objective, scalable surgical education and sets a new benchmark for automated workflow analysis and skill assessment in ophthalmology training. The dataset and annotations are publicly available in Synapse (https://www.synapse.org/Synapse:syn66401174/files/). Negin Ghamsarian, Raphael Sznitman, Klaus Schöffmann, Jens Kowal |
ACM Multimedia | 4 |
| 2013 | Graph-Based Multi-Surface Segmentation of OCT Data Using Trained Hard and Soft ConstraintsabstractOptical coherence tomography (OCT) is a well-established image modality in ophthalmology and used daily in the clinic. Automatic evaluation of such datasets requires an accurate segmentation of the retinal cell layers. However, due to the naturally low signal to noise ratio and the resulting bad image quality, this task remains challenging. We propose an automatic graph-based multi-surface segmentation algorithm that internally uses soft constraints to add prior information from a learned model. This improves the accuracy of the segmentation and increase the robustness to noise. Furthermore, we show that the graph size can be greatly reduced by applying a smart segmentation scheme. This allows the segmentation to be computed in seconds instead of minutes, without deteriorating the segmentation accuracy, making it ideal for a clinical setup. An extensive evaluation on 20 OCT datasets of healthy eyes was performed and showed a mean unsigned segmentation error of 3.05 ±0.54 μm over all datasets when compared to the average observer, which is lower than the inter-observer variability. Similar performance was measured for the task of drusen segmentation, demonstrating the usefulness of using soft constraints as a tool to deal with pathologies. Pascal A. Dufour, Lala Ceklic, Hannan Abdillahi, Simon Schroder, Sandro De Zanet, Ute Wolf-Schnurrbusch, Jens Kowal |
IEEE Trans. Medical Imaging | 7 |
| 2012 | Classification of drusen positions in optical coherence tomography data from patients with age-related macular degeneration
Pascal A. Dufour, Sandro De Zanet, Ute Wolf-Schnurrbusch, Jens Kowal |
ICPR | 4 |
| 2012 | Pathology Hinting as the Combination of Automatic Segmentation with a Statistical Shape Model
Pascal A. Dufour, Hannan Abdillahi, Lala Ceklic, Ute Wolf-Schnurrbusch, Jens Kowal |
MICCAI (3) | 5 |