Differences with torch.nn.functional.grid_sample
torch.nn.functional.grid_sample
torch.nn.functional.grid_sample(input, grid, mode='bilinear', padding_mode='zero', align_corners=None) -> Tensor
For more information, see torch.nn.functional.grid_sample.
mindspore.ops.grid_sample
mindspore.ops.grid_sample(input, grid, mode='bilinear', padding_mode='zeros', align_corners=False)
For more information, see mindspore.ops.grid_sample.
Differences
PyTorch: Given an input and a flow-field grid, computes the output using input values and pixel locations from grid. Only 4-D (GridSampler2D) and 5-D (GridSampler3D) inputs are supported.
MindSpore: MindSpore API implements functions basically same as PyTorch, but the mode of "bicubic" is not supported yet in MindSpore.
Categories |
Subcategories |
PyTorch |
MindSpore |
Differences |
---|---|---|---|---|
Parameters |
Parameter 1 |
input |
input |
Same function |
Parameter 2 |
grid |
grid |
Same function |
|
Parameter 3 |
mode |
mode |
Same function, MindSpore does not support "bicubic" mode yet |
|
Parameter 4 |
padding_mode |
padding_mode |
Same function |
|
Parameter 5 |
align_corners |
align_corners |
Same function |
Code Example 1
# PyTorch
import torch
from torch import tensor
import numpy as np
input_x = tensor(np.arange(16).reshape((2, 2, 2, 2)).astype(np.float32))
grid = tensor(np.arange(0.2, 1, 0.1).reshape((2, 2, 1, 2)).astype(np.float32))
output = torch.nn.functional.grid_sample(input_x, grid)
print(output)
#tensor([[[[ 2.3000],
# [ 2.9000]],
#
# [[ 6.3000],
# [ 6.9000]]],
#
#
# [[[ 7.9200],
# [ 4.6200]],
#
# [[10.8000],
# [ 6.3000]]]])
# MindSpore
from mindspore import Tensor
import mindspore.ops as ops
import numpy as np
input_x = Tensor(np.arange(16).reshape((2, 2, 2, 2)).astype(np.float32))
grid = Tensor(np.arange(0.2, 1, 0.1).reshape((2, 2, 1, 2)).astype(np.float32))
output = ops.grid_sample(input_x, grid, mode='bilinear', padding_mode='zeros', align_corners=False)
print(output)
#[[[[ 2.3 ]
# [ 2.8999999]]
#
# [[ 6.3 ]
# [ 6.8999996]]]
#
#
# [[[ 7.919999 ]
# [ 4.6200004]]
#
# [[10.799998 ]
# [ 6.3000007]]]]