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1from transformers import OneFormerProcessor, OneFormerForUniversalSegmentation
2from PIL import Image
3import requests
4url = "https://huggingface.co/datasets/shi-labs/oneformer_demo/blob/main/coco.jpeg"
5image = Image.open(requests.get(url, stream=True).raw)
6
7# Loading a single model for all three tasks
8processor = OneFormerProcessor.from_pretrained("shi-labs/oneformer_coco_dinat_large")
9model = OneFormerForUniversalSegmentation.from_pretrained("shi-labs/oneformer_coco_dinat_large")
10
11# Semantic Segmentation
12semantic_inputs = processor(images=image, task_inputs=["semantic"], return_tensors="pt")
13semantic_outputs = model(**semantic_inputs)
14# pass through image_processor for postprocessing
15predicted_semantic_map = processor.post_process_semantic_segmentation(outputs, target_sizes=[image.size[::-1]])[0]
16
17# Instance Segmentation
18instance_inputs = processor(images=image, task_inputs=["instance"], return_tensors="pt")
19instance_outputs = model(**instance_inputs)
20# pass through image_processor for postprocessing
21predicted_instance_map = processor.post_process_instance_segmentation(outputs, target_sizes=[image.size[::-1]])[0]["segmentation"]
22
23# Panoptic Segmentation
24panoptic_inputs = processor(images=image, task_inputs=["panoptic"], return_tensors="pt")
25panoptic_outputs = model(**panoptic_inputs)
26# pass through image_processor for postprocessing
27predicted_semantic_map = processor.post_process_panoptic_segmentation(outputs, target_sizes=[image.size[::-1]])[0]["segmentation"]1@article{jain2022oneformer,
2 title={{OneFormer: One Transformer to Rule Universal Image Segmentation}},
3 author={Jitesh Jain and Jiachen Li and MangTik Chiu and Ali Hassani and Nikita Orlov and Humphrey Shi},
4 journal={arXiv},
5 year={2022}
6 }