Search Results for author: Lars Schmarje

Found 13 papers, 7 papers with code

Annotating Ambiguous Images: General Annotation Strategy for Image Classification with Real-World Biomedical Validation on Vertebral Fracture Diagnosis

1 code implementation21 Jun 2023 Lars Schmarje, Vasco Grossmann, Claudius Zelenka, Reinhard Koch

While numerous methods exist to solve classification problems within curated datasets, these solutions often fall short in biomedical applications due to the biased or ambiguous nature of the data.

Image Classification

Opportunistic hip fracture risk prediction in Men from X-ray: Findings from the Osteoporosis in Men (MrOS) Study

no code implementations22 Jul 2022 Lars Schmarje, Stefan Reinhold, Timo Damm, Eric Orwoll, Claus-C. Glüer, Reinhard Koch

We show that FORM can correctly predict the 10-year hip fracture risk with a validation AUC of 81. 44 +- 3. 11% / 81. 04 +- 5. 54% (mean +- STD) including additional information like age, BMI, fall history and health background across a 5-fold cross validation on the X-ray and CT cohort, respectively.

Computed Tomography (CT)

Is one annotation enough? A data-centric image classification benchmark for noisy and ambiguous label estimation

1 code implementation13 Jul 2022 Lars Schmarje, Vasco Grossmann, Claudius Zelenka, Sabine Dippel, Rainer Kiko, Mariusz Oszust, Matti Pastell, Jenny Stracke, Anna Valros, Nina Volkmann, Reinhard Koch

We propose a data-centric image classification benchmark with ten real-world datasets and multiple annotations per image to allow researchers to investigate and quantify the impact of such data quality issues.

Image Classification Noise Estimation

Fuzzy Overclustering: Semi-Supervised Classification of Fuzzy Labels with Overclustering and Inverse Cross-Entropy

1 code implementation13 Oct 2021 Lars Schmarje, Johannes Brünger, Monty Santarossa, Simon-Martin Schröder, Rainer Kiko, Reinhard Koch

We propose a novel loss to improve the overclustering capability of our framework and show the benefit of overclustering for fuzzy labels.

Life is not black and white -- Combining Semi-Supervised Learning with fuzzy labels

no code implementations13 Oct 2021 Lars Schmarje, Reinhard Koch

We envision the incorporation of fuzzy labels into Semi-Supervised Learning and give a proof-of-concept of the potential lower costs and higher consistency in the complete development cycle.

S2C2 - An orthogonal method for Semi-Supervised Learning on ambiguous labels

no code implementations29 Sep 2021 Lars Schmarje, Monty Santarossa, Simon-Martin Schröder, Claudius Zelenka, Rainer Kiko, Jenny Stracke, Nina Volkmann, Reinhard Koch

Semi-Supervised Learning (SSL) can decrease the required amount of labeled image data and thus the cost for deep learning.

Learning Stixel-based Instance Segmentation

no code implementations7 Jul 2021 Monty Santarossa, Lukas Schneider, Claudius Zelenka, Lars Schmarje, Reinhard Koch, Uwe Franke

Stixels have been successfully applied to a wide range of vision tasks in autonomous driving, recently including instance segmentation.

Autonomous Driving Instance Segmentation +2

Beyond Cats and Dogs: Semi-supervised Classification of fuzzy labels with overclustering

1 code implementation3 Dec 2020 Lars Schmarje, Johannes Brünger, Monty Santarossa, Simon-Martin Schröder, Rainer Kiko, Reinhard Koch

We propose a novel loss to improve the overclustering capability of our framework and show on the common image classification dataset STL-10 that it is faster and has better overclustering performance than previous work.

General Classification Image Classification

2D and 3D Segmentation of uncertain local collagen fiber orientations in SHG microscopy

1 code implementation30 Jul 2019 Lars Schmarje, Claudius Zelenka, Ulf Geisen, Claus-C. Glüer, Reinhard Koch

Furthermore, we compare a variety of 2D and 3D methods such as classical approaches like Fourier analysis with state-of-the-art deep neural networks for the classification of local fiber orientations.

Segmentation

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