o oiQ@sddlmZddlZddlmZmZddlmZ   ddedede d eej d eej d ef d d Z   ddededede d eej d eej d efddZ dS))OptionalN)Tensorstack)torch_meshgridTheightwidthnormalized_coordinatesdevicedtypereturncCstjd|d|||d}tjd|d|||d}|r.||ddd}||ddd}tt||gdddd }|ddddS) aoGenerate a coordinate grid for an image. When the flag ``normalized_coordinates`` is set to True, the grid is normalized to be in the range :math:`[-1,1]` to be consistent with the pytorch function :py:func:`torch.nn.functional.grid_sample`. Args: height: the image height (rows). width: the image width (cols). normalized_coordinates: whether to normalize coordinates in the range :math:`[-1,1]` in order to be consistent with the PyTorch function :py:func:`torch.nn.functional.grid_sample`. device: the device on which the grid will be generated. dtype: the data type of the generated grid. Return: grid tensor with shape :math:`(1, H, W, 2)`. Example: >>> create_meshgrid(2, 2) tensor([[[[-1., -1.], [ 1., -1.]], [[-1., 1.], [ 1., 1.]]]]) >>> create_meshgrid(2, 2, normalized_coordinates=False) tensor([[[[0., 0.], [1., 0.]], [[0., 1.], [1., 1.]]]]) rr r ?ijindexingdimtorchlinspacerrpermute unsqueeze)rrrr r xsys base_gridrE/home/ubuntu/.local/lib/python3.10/site-packages/kornia/utils/grid.pycreate_meshgrids) r depthc Cstjd|d|||d}tjd|d|||d}tjd|d|||d}|rD||ddd}||ddd}||ddd}tt|||gdddd } | dddd dS) aGenerate a coordinate grid for an image. When the flag ``normalized_coordinates`` is set to True, the grid is normalized to be in the range :math:`[-1,1]` to be consistent with the pytorch function :py:func:`torch.nn.functional.grid_sample`. Args: depth: the image depth (channels). height: the image height (rows). width: the image width (cols). normalized_coordinates: whether to normalize coordinates in the range :math:`[-1,1]` in order to be consistent with the PyTorch function :py:func:`torch.nn.functional.grid_sample`. device: the device on which the grid will be generated. dtype: the data type of the generated grid. Return: grid tensor with shape :math:`(1, D, H, W, 3)`. rr r rrrrrrr) r!rrrr r rrzsrrrrcreate_meshgrid3dZsr$)TNN)typingrr kornia.corerrkornia.utils._compatrintboolr r r r$rrrrsL   D