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Spatial transcriptomics (ST) enables gene expression mapping within anatomical context but remains costly and low-throughput. Hematoxylin and eosin (H\&E) staining offers rich morphology yet lacks molecular resolution. We present…

The assessment of imaging biomarkers is critical for advancing precision medicine and improving disease characterization. Despite the availability of methods to derive disease heterogeneity metrics in imaging studies, a robust framework for…

We propose a two-step domain shift-invariant mitosis cell detection method based on Faster RCNN and a convolutional neural network (CNN). We generate various domain-shifted versions of existing histopathology images using a stain…

Computer Vision and Pattern Recognition · Computer Science 2021-09-29 Ramin Nateghi , Fattaneh Pourakpour

The variability introduced by differences in MRI scanner models, acquisition protocols, and imaging sites hinders consistent analysis and generalizability across multicenter studies. We present a novel image-based harmonization framework…

Computer Vision and Pattern Recognition · Computer Science 2025-10-28 Luca Caldera , Lara Cavinato , Francesca Ieva

We provide new convergence guarantees in Wasserstein distance for diffusion-based generative models, covering both stochastic (DDPM-like) and deterministic (DDIM-like) sampling methods. We introduce a simple framework to analyze…

Machine Learning · Computer Science 2025-11-14 Eliot Beyler , Francis Bach

We study the computation of doubly regularized Wasserstein barycenters, a recently introduced family of entropic barycenters governed by inner and outer regularization strengths. Previous research has demonstrated that various…

Optimization and Control · Mathematics 2023-07-26 Lénaïc Chizat , Tomas Vaškevičius

In digital pathology, many image analysis tasks are challenged by the need for large and time-consuming manual data annotations to cope with various sources of variability in the image domain. Unsupervised domain adaptation based on…

Image and Video Processing · Electrical Eng. & Systems 2022-05-18 Nassim Bouteldja , Barbara Mara Klinkhammer , Tarek Schlaich , Peter Boor , Dorit Merhof

This study introduces a federated learning-based approach to predict HER2 status from hematoxylin and eosin (HE)-stained whole slide images (WSIs), reducing costs and speeding up treatment decisions. To address label imbalance and feature…

Computer Vision and Pattern Recognition · Computer Science 2024-12-20 Kamorudeen A. Amuda , Almustapha A. Wakili

Histopathology whole slide images (WSIs) can reveal significant inter-hospital variability such as illumination, color or optical artifacts. These variations, caused by the use of different scanning protocols across medical centers…

Computer Vision and Pattern Recognition · Computer Science 2022-07-01 Marin Scalbert , Maria Vakalopoulou , Florent Couzinié-Devy

The Wasserstein barycenter (WB) is an important tool for summarizing sets of probability measures. It finds applications in applied probability, clustering, image processing, etc. When the measures' supports are finite, computing a…

Optimization and Control · Mathematics 2024-10-25 Daniel Mimouni , P Malisani , J. Zhu , W. de Oliveira

Colorectal cancer is one of the most common cancers worldwide, so early pathological examination is very important. However, it is time-consuming and labor-intensive to identify the number and type of cells on H&E images in clinical.…

Image and Video Processing · Electrical Eng. & Systems 2024-04-17 Chia-Yen Lee , Hsiang-Chin Chien , Ching-Ping Wang , Hong Yen , Kai-Wen Zhen , Hong-Kun Lin

In routine colorectal cancer management, histologic samples stained with hematoxylin and eosin are commonly used. Nonetheless, their potential for defining objective biomarkers for patient stratification and treatment selection is still…

Quantitative Methods · Quantitative Biology 2024-09-26 Fabi Prezja , Leevi Annala , Sampsa Kiiskinen , Suvi Lahtinen , Timo Ojala , Pekka Ruusuvuori , Teijo Kuopio

We introduce a distortion measure for images, Wasserstein distortion, that simultaneously generalizes pixel-level fidelity on the one hand and realism or perceptual quality on the other. We show how Wasserstein distortion reduces to a pure…

Information Theory · Computer Science 2024-04-01 Yang Qiu , Aaron B. Wagner , Johannes Ballé , Lucas Theis

Virtual histology is an emerging field in biomedicine that enables three-dimensional tissue visualization using X-ray micro-computed tomography. However, the method still lacks the specificity of conventional histology, in which parts of…

Large amounts of digitized histopathological data display a promising future for developing pathological foundation models via self-supervised learning methods. Foundation models pretrained with these methods serve as a good basis for…

Computer Vision and Pattern Recognition · Computer Science 2024-08-07 Shengyi Hua , Fang Yan , Tianle Shen , Lei Ma , Xiaofan Zhang

A crucial challenge in image-based modeling of biomedical data is to identify trends and features that separate normality and pathology. In many cases, the morphology of the imaged object exhibits continuous change as it deviates from…

Machine Learning · Computer Science 2019-01-23 Denny Wu , Hirofumi Kobayashi , Charles Ding , Lei Cheng , Keisuke Goda Marzyeh Ghassemi

With the increase of computing power, machine learning models in medical imaging have been introduced to help in rending medical diagnosis and inspection, like hemophilia, a rare disorder in which blood cannot clot normally. Often, one of…

Computer Vision and Pattern Recognition · Computer Science 2024-09-19 Qianyu Fan

The Wasserstein barycenter is a geometric construct which captures the notion of centrality among probability distributions, and which has found many applications in machine learning. However, most algorithms for finding even an approximate…

Data Structures and Algorithms · Computer Science 2021-10-20 Zachary Izzo , Sandeep Silwal , Samson Zhou

In this paper, we introduced a novel feature extraction approach, named exclusive autoencoder (XAE), which is a supervised version of autoencoder (AE), able to largely improve the performance of nucleus detection and classification on…

Computer Vision and Pattern Recognition · Computer Science 2018-11-29 Chao-Hui Huang , Daniel Racoceanu

Diagnosis of breast carcinomas has so far been limited to the morphological interpretation of epithelial cells and the assessment of epithelial tissue architecture. Consequently, most of the automated systems have focused on characterizing…

Computer Vision and Pattern Recognition · Computer Science 2017-02-21 Babak Ehteshami Bejnordi , Jimmy Linz , Ben Glass , Maeve Mullooly , Gretchen L Gierach , Mark E Sherman , Nico Karssemeijer , Jeroen van der Laak , Andrew H Beck
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