Journal
2021 IEEE/CVF CONFERENCE ON COMPUTER VISION AND PATTERN RECOGNITION, CVPR 2021
Volume -, Issue -, Pages 2603-2612Publisher
IEEE COMPUTER SOC
DOI: 10.1109/CVPR46437.2021.00263
Keywords
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Funding
- National Science Foundation [2026498]
- Institute for Human-Centered Artificial Intelligence (HAI) at Stanford University
- Direct For Social, Behav & Economic Scie
- Divn Of Social and Economic Sciences [2026498] Funding Source: National Science Foundation
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This research aims to propose an unsupervised method to discover long-tail categories in instance segmentation by learning instance embeddings of masked regions. By leveraging self-supervised losses for learning mask embeddings, the model trained on COCO dataset is able to identify novel and more fine-grained objects than common categories. The model achieves competitive quantitative results on LVIS compared to supervised and partially supervised methods.
Instance segmentation is an active topic in computer vision that is usually solved by using supervised learning approaches over very large datasets composed of object level masks. Obtaining such a dataset for any new domain can be very expensive and time-consuming. In addition, models trained on certain annotated categories do not generalize well to unseen objects. The goal of this paper is to propose a method that can perform unsupervised discovery of long-tail categories in instance segmentation, through learning instance embeddings of masked regions. Leveraging rich relationship and hierarchical structure between objects in the images, we propose self-supervised losses for learning mask embeddings. Trained on COCO [34] dataset without additional annotations of the long-tail objects, our model is able to discover novel and more fine-grained objects than the common categories in COCO. We show that the model achieves competitive quantitative results on LVIS [17] as compared to the supervised and partially supervised methods.
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