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Ensembling Instance and Semantic Segmentation for Panoptic Segmentation
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abstract
We demonstrate our solution for the 2019 COCO panoptic segmentation task. Our method first performs instance segmentation and semantic segmentation separately, then combines the two to generate panoptic segmentation results. To enhance the performance, we add several expert models of Mask R-CNN in instance segmentation to tackle the data imbalance problem in the training data; also HTC model is adopted yielding our best instance segmentation results. In semantic segmentation, we trained several models with various backbones and use an ensemble strategy which further boosts the segmentation results. In the end, we analyze various combinations of instance and semantic segmentation, and report on their performance for the final panoptic segmentation results. Our best model achieves $PQ$ 47.1 on 2019 COCO panoptic test-dev data.
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Cross-Domain Semantic Segmentation with Large Language Model-Assisted Descriptor Generation
LangSeg claims state-of-the-art segmentation via LLM-generated descriptors, but the method section never describes the descriptor generation and the reported improvements contradict its own tables.
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