mindspore.dataset.vision.py_transforms.HWC2CHW

class mindspore.dataset.vision.py_transforms.HWC2CHW[源代码]

将输入的numpy.ndarray图像的shape从(H, W, C)转换为(C, H, W)。

异常:

  • TypeError - 当输入图像的类型不为 numpy.ndarray

  • TypeError - 当输入图像的维度不为3。

支持平台:

CPU

样例:

>>> from mindspore.dataset.transforms.py_transforms import Compose
>>>
>>> transforms_list = Compose([py_vision.Decode(),
...                            py_vision.HWC2CHW()])
>>> # apply the transform to dataset through map function
>>> image_folder_dataset = image_folder_dataset.map(operations=transforms_list,
...                                                 input_columns="image")