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<dc:title xml:lang="en">Self-supervised learning in the presence of limited labelled data for digital histopathology</dc:title>
<dcterms:alternative xml:lang="fr">Apprentissage auto-supervisé en présence de données étiquetées limitées pour l'histopathologie numérique</dcterms:alternative>
<dc:subject xml:lang="fr">Histopathologie digitale</dc:subject>
<dc:subject xml:lang="fr">Transfert de coloration</dc:subject>
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<dc:subject xml:lang="fr">Invariance des colorations</dc:subject>
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<dc:subject xml:lang="fr">Segmentation rein-glomérule</dc:subject>
<dc:subject xml:lang="en">Digital histopathology</dc:subject>
<dc:subject xml:lang="en">Generative adversarial networks</dc:subject>
<dc:subject xml:lang="en">Stain transfer</dc:subject>
<dc:subject xml:lang="en">Multi-stain segmentation</dc:subject>
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<dc:subject xml:lang="en">Kidney-glomeruli segmentation</dc:subject>
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<tef:elementdEntree autoriteExterne="029607728" autoriteSource="Sudoc">Intelligence artificielle en médecine</tef:elementdEntree>
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<dcterms:abstract xml:lang="fr">Un défi majeur dans l'application de l'apprentissage profond à l'histopathologie réside dans la variation des colorations, à la fois inter et intra-coloration. Les modèles d'apprentissage profond entraînés sur une seule coloration (ou domaine) échouent souvent sur d'autres, même pour la même tâche (par exemple, la segmentation des glomérules rénaux). L'annotation de chaque coloration est coûteuse et chronophage, ce qui pousse les chercheurs à explorer des méthodes de transfert de coloration basées sur l'adaptation de domaine. Celles-ci visent à réaliser une segmentation multi-coloration en utilisant des annotations d'une seule coloration, mais sont limitées par l'introduction d'un décalage de domaine, réduisant ainsi les performances. La détection et la quantification de ce décalage sont essentielles. Cette thèse se concentre sur des méthodes non supervisées pour développer une métrique de détection du décalage et propose une approche de transfert de coloration pour le minimiser. Bien que ces algorithmes réduisent le besoin d'annotations, ils peuvent être limités pour certains tissus. Cette thèse propose donc une amélioration via l'auto-supervision.</dcterms:abstract>
<dcterms:abstract xml:lang="en">A key challenge in applying deep learning to histopathology is the variation in stainings, both inter and intra-stain. Deep learning models trained on one stain (or domain) often fail on others, even for the same task (e.g., kidney glomeruli segmentation). Labelling each stain is expensive and time-consuming, prompting researchers to explore domain adaptation based stain-transfer methods. These aim to perform multi-stain segmentation using labels from only one stain but are limited by the introduction of domain shift, reducing performance. Detecting and quantifying this domain shift is important. This thesis focuses on unsupervised methods to develop a metric for detecting domain shift and proposes a novel stain-transfer approach to minimise it. While multi-stain algorithms reduce the need for labels in target stains, they may struggle with tissue types lacking source-stain labels. To address this, the thesis focuses to improve multi-stain segmentation with less reliance on labelled data using self-supervision. While this thesis focused on kidney glomeruli segmentation, the proposed methods are designed to be applicable to other histopathology tasks and domains, including medical imaging and computer vision.</dcterms:abstract>
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