Fully Convolutional Networks for Panoptic Segmentation

In this paper, we present a conceptually simple, strong, and efficient framework for panoptic segmentation, called Panoptic FCN. Our approach aims to represent and predict foreground things and background stuff in a unified fully convolutional pipeline. In particular, Panoptic FCN encodes each object instance or stuff category into a specific kernel weight with the proposed kernel generator and produces the prediction by convolving the high-resolution feature directly. With this approach, instance-aware and semantically consistent properties for things and stuff can be respectively satisfied in a simple generate-kernel-then-segment workflow. Without extra boxes for localization or instance separation, the proposed approach outperforms previous box-based and -free models with high efficiency on COCO, Cityscapes, and Mapillary Vistas datasets with single scale input. Our code is made publicly available at https://github.com/Jia-Research-Lab/PanopticFCN.

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Results from the Paper


Task Dataset Model Metric Name Metric Value Global Rank Result Benchmark
Panoptic Segmentation Cityscapes val Panoptic FCN* (ResNet-50-FPN) PQst 66.6 # 9
Panoptic Segmentation Cityscapes val Panoptic FCN* (ResNet-FPN) PQ 61.4 # 22
PQth 54.8 # 15
Panoptic Segmentation Cityscapes val Panoptic FCN* (Swin-L, Cityscapes-fine) PQst 70.6 # 4
PQth 59.5 # 6
Panoptic Segmentation COCO minival Panoptic FCN* (Swin-L, single-scale) SQ 83.2 # 1
RQ 61.6 # 2
PQth 58.5 # 13
SQth 84.6 # 1
RQth 68.6 # 1
SQst 81.1 # 1
RQst 51.1 # 1
Panoptic Segmentation COCO minival Panoptic FCN* (ResNet-50-FPN) PQ 44.3 # 22
SQ 80.7 # 3
RQ 53 # 5
PQth 50 # 20
SQth 83.4 # 2
RQth 59.3 # 4
PQst 35.6 # 19
SQst 76.7 # 3
RQst 43.5 # 3
Panoptic Segmentation COCO test-dev Panoptic FCN* (Swin-L) PQ 52.7 # 10
PQth 59.4 # 8
Panoptic Segmentation COCO test-dev Panoptic FCN*++ (DCN-101-FPN) PQ 47.5 # 21
PQst 38.2 # 14
PQth 53.7 # 22
Panoptic Segmentation Mapillary val Panoptic FCN* (ResNet-FPN) PQ 36.9 # 10
PQth 32.9 # 7
Panoptic Segmentation Mapillary val Panoptic FCN* (Swin-L, single-scale) PQ 45.7 # 3
PQth 40.8 # 1
PQst 52.1 # 3
Panoptic Segmentation Mapillary val Panoptic FCN* (ResNet-50-FPN) PQst 42.3 # 7

Methods