app.py

from transformers import SegformerFeatureExtractor, SegformerForSemanticSegmentation
from PIL import Image


feature_extractor = SegformerFeatureExtractor.from_pretrained("nvidia/segformer-b3-finetuned-cityscapes-1024-1024")
model = SegformerForSemanticSegmentation.from_pretrained("nvidia/segformer-b3-finetuned-cityscapes-1024-1024")

# url = "http://images.cocodataset.org/val2017/000000039769.jpg"
# image = Image.open(requests.get(url, stream=True).raw)

image1, image2, image3 = 'image1.jpg', 'image2.jpg', 'image3.jpg'
image1 = Image.open(image1)
image2 = Image.open(image2)
image3 = Image.open(image3)

inputs = feature_extractor(images=[image1, image2, image3], return_tensors="pt")
outputs = model(**inputs)
logits = outputs.logits  # shape (batch_size, num_labels, height/4, width/4)