问题：
ValueError: At least one stride in the given numpy array is negative, and tensors with negative strides are not currently supported. (You can probably work around this by making a copy of your array with array.copy().)
解决方法：
改为：
参考资料：
（二十五：2020.12.15）CVPR 2020 学习（三）《U^2 Net》训练实操
