假设我有一个图像呈现为这个numpy数组：
array([[ 55, 229, 185, 21, 128, 50, 109, 121, 251],
[138, 0, 143, 153, 22, 244, 102, 6, 63],
[250, 235, 57, 28, 220, 15, 217, 147, 70],
[121, 164, 128, 224, 56, 206, 104, 87, 154],
[232, 51, 20, 235, 8, 200, 119, 234, 180],
[182, 79, 79, 22, 221, 233, 54, 11, 209],
[249, 64, 92, 70, 167, 151, 214, 188, 213]], dtype=uint8)
这是7X9矩阵，我希望将图像的宽度加倍到7x18。 我想知道当你想要压缩图像时该怎么做，但我不知道如果我想增加尺寸我应该怎么做。
谢谢！
`
答案 0 :(得分：1)
将您的数组放入a，然后
np.repeat(a, 2, axis=1)
给出
array([[ 55, 55, 229, 229, 185, 185, 21, 21, 128, 128, 50, 50, 109,
109, 121, 121, 251, 251],
[138, 138, 0, 0, 143, 143, 153, 153, 22, 22, 244, 244, 102,
102, 6, 6, 63, 63],
[250, 250, 235, 235, 57, 57, 28, 28, 220, 220, 15, 15, 217,
217, 147, 147, 70, 70],
[121, 121, 164, 164, 128, 128, 224, 224, 56, 56, 206, 206, 104,
104, 87, 87, 154, 154],
[232, 232, 51, 51, 20, 20, 235, 235, 8, 8, 200, 200, 119,
119, 234, 234, 180, 180],
[182, 182, 79, 79, 79, 79, 22, 22, 221, 221, 233, 233, 54,
54, 11, 11, 209, 209],
[249, 249, 64, 64, 92, 92, 70, 70, 167, 167, 151, 151, 214,
214, 188, 188, 213, 213]])
其形状为7x18。