Leveraging image captions for selective whole slide image annotation

• URL: http://arxiv.org/abs/2407.06363v1
• Date: Mon, 8 Jul 2024 20:05:21 GMT
• Title: Leveraging image captions for selective whole slide image annotation
• Authors: Jingna Qiu, Marc Aubreville, Frauke Wilm, Mathias Öttl, Jonas Utz, Maja Schlereth, Katharina Breininger,
• Abstract summary: This paper focuses on identifying and annotating specific image regions that optimize model training. Prototype sampling is more effective than random and diversity sampling in identifying annotation regions with valuable training information. Our results show that prototype sampling is more effective than random and diversity sampling in identifying annotation regions with valuable training information.
• Score: 0.37334049820361814
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Acquiring annotations for whole slide images (WSIs)-based deep learning tasks, such as creating tissue segmentation masks or detecting mitotic figures, is a laborious process due to the extensive image size and the significant manual work involved in the annotation. This paper focuses on identifying and annotating specific image regions that optimize model training, given a limited annotation budget. While random sampling helps capture data variance by collecting annotation regions throughout the WSIs, insufficient data curation may result in an inadequate representation of minority classes. Recent studies proposed diversity sampling to select a set of regions that maximally represent unique characteristics of the WSIs. This is done by pretraining on unlabeled data through self-supervised learning and then clustering all regions in the latent space. However, establishing the optimal number of clusters can be difficult and not all clusters are task-relevant. This paper presents prototype sampling, a new method for annotation region selection. It discovers regions exhibiting typical characteristics of each task-specific class. The process entails recognizing class prototypes from extensive histopathology image-caption databases and detecting unlabeled image regions that resemble these prototypes. Our results show that prototype sampling is more effective than random and diversity sampling in identifying annotation regions with valuable training information, resulting in improved model performance in semantic segmentation and mitotic figure detection tasks. Code is available at https://github.com/DeepMicroscopy/Prototype-sampling.

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