Abstract
Volumetric instance segmentation plays a significant role in biomedical morphological analyses. The improvement of segmentation accuracy has been accelerated by the progress of deep learning-based methods. However, such methods usually rely heavily on plenty of precise annotation, which is time-consuming and may need some expert knowledge to label manually. Although there are several studies focusing on weakly supervised methods in order to save the labeling cost, previous approaches still more or less require voxel-wise annotation. In this paper, we propose a weakly supervised instance segmentation method that needs no voxel-wise labeling. Our approach takes advantage of two advanced techniques: one is the popular proposal-based framework (Faster R-CNN in this paper) for instance detection, and the other is the peak response mapping (PRM) for finding visual cues of instances. Then a new thresholding method combines detected boxes and visual cues to generate final instance segmentation results. We conduct experiments on two biomedical datasets, one of which is a large-scale mouse brain dataset at single-neuron resolution collected by ourselves. Results on both datasets validate the effectiveness of our proposed method.
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Acknowledgements
This work was supported by the Natural Science Foundation of China under Grant 91732304, and by the Fundamental Research Funds for the Central Universities under Grant WK2380000002.
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Dong, M. et al. (2019). Instance Segmentation from Volumetric Biomedical Images Without Voxel-Wise Labeling. In: Shen, D., et al. Medical Image Computing and Computer Assisted Intervention – MICCAI 2019. MICCAI 2019. Lecture Notes in Computer Science(), vol 11765. Springer, Cham. https://doi.org/10.1007/978-3-030-32245-8_10
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DOI: https://doi.org/10.1007/978-3-030-32245-8_10
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