比较与tf.keras.preprocessing.image.random_rotation的功能差异
tf.keras.preprocessing.image.random_rotation
tf.keras.preprocessing.image.random_rotation(
x,
rg,
row_axis=1,
col_axis=2,
channel_axis=0,
fill_mode='nearest',
cval=0.0,
interpolation_order=1
)
mindspore.dataset.vision.RandomRotation
class mindspore.dataset.vision.RandomRotation(
degrees,
resample=Inter.NEAREST,
expand=False,
center=None,
fill_value=0
)
使用方式
TensorFlow:对图像进行随机旋转,图像的行、列及通道轴索引可通过入参指定。
MindSpore:对图像进行随机旋转,并对旋转图像之外的区域进行像素填充,图像需按照行、列、通道的轴顺序排列。
代码示例
# The following implements RandomRotation with MindSpore.
import numpy as np
import mindspore.dataset as ds
from mindspore.dataset.vision import Inter
image = np.random.random((28, 28, 3))
result = ds.vision.RandomRotation(90, resample=Inter.NEAREST)(image)
print(result.shape)
# (28, 28, 3)
# The following implements random_rotation with TensorFlow.
import tensorflow as tf
image = np.random.random((28, 28, 3))
result = tf.keras.preprocessing.image.random_rotation(
image, 90, row_axis=0, col_axis=1, channel_axis=2, fill_mode='nearest')
print(result.shape)
# (28, 28, 3)