Source code for torchvision.tv_tensors._mask

from __future__ import annotations

from typing import Any, Optional, Union

import PIL.Image
import torch

from ._tv_tensor import TVTensor

[docs]class Mask(TVTensor): """:class:`torch.Tensor` subclass for segmentation and detection masks. Args: data (tensor-like, PIL.Image.Image): Any data that can be turned into a tensor with :func:`torch.as_tensor` as well as PIL images. dtype (torch.dtype, optional): Desired data type. If omitted, will be inferred from ``data``. device (torch.device, optional): Desired device. If omitted and ``data`` is a :class:`torch.Tensor`, the device is taken from it. Otherwise, the mask is constructed on the CPU. requires_grad (bool, optional): Whether autograd should record operations. If omitted and ``data`` is a :class:`torch.Tensor`, the value is taken from it. Otherwise, defaults to ``False``. """ def __new__( cls, data: Any, *, dtype: Optional[torch.dtype] = None, device: Optional[Union[torch.device, str, int]] = None, requires_grad: Optional[bool] = None, ) -> Mask: if isinstance(data, PIL.Image.Image): from torchvision.transforms.v2 import functional as F data = F.pil_to_tensor(data) tensor = cls._to_tensor(data, dtype=dtype, device=device, requires_grad=requires_grad) return tensor.as_subclass(cls)


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