densenet.py 文件源码

def preprocess_input(x, data_format=None):
    """Preprocesses a tensor encoding a batch of images.

    # Arguments
        x: input Numpy tensor, 4D.
        data_format: data format of the image tensor.

    # Returns
        Preprocessed tensor.
    """
    x = _preprocess_input(x, data_format=data_format)
    x *= 0.017  # scale values
    return x