"""
Image utility functions
"""

import torch


def create_empty_mask(
    batch_size: int,
    height: int,
    width: int
) -> torch.Tensor:
    """
    Create an empty mask tensor.
    
    Args:
        batch_size: Number of images in batch
        height: Mask height
        width: Mask width
        
    Returns:
        Zero-filled mask tensor as RGB (B, H, W, 3)
    """
    return torch.zeros((batch_size, height, width, 3), dtype=torch.float32)