from transformers import SegformerImageProcessor, AutoModelForSemanticSegmentation
import torch.nn as nn

def calculate_seg_mask(image):
    processor = SegformerImageProcessor.from_pretrained("mattmdjaga/segformer_b2_clothes")
    model = AutoModelForSemanticSegmentation.from_pretrained("mattmdjaga/segformer_b2_clothes")

    inputs = processor(images=image, return_tensors="pt")

    outputs = model(**inputs)
    logits = outputs.logits.cpu()

    upsampled_logits = nn.functional.interpolate(
        logits,
        size=image.size[::-1],
        mode="bilinear",
        align_corners=False,
    )

    pred_seg = upsampled_logits.argmax(dim=1)[0]
    return pred_seg