We present Panoptic SegFormer, a general framework for end-to-end panoptic segmentation with Transformers. The proposed method extends Deformable DETR with a unified mask prediction workflow for both things and stuff, making the panoptic segmentation pipeline concise and effective. With a ResNet-50 backbone, our method achieves 50.0% PQ on the COCO test-dev split, surpassing previous state-of-the-art methods by significant margins without bells and whistles. Using a more powerful PVTv2-B5 backbone, Panoptic-SegFormer achieves a new record of 54.1%PQ and 54.4% PQ on the COCO val and test-dev splits with single scale input.
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