[英]How to stack multiple numpy 2d arrays into one 3d array?
這是我的代碼:
img = imread("lena.jpg")
for channel in range(3):
res = filter(img[:,:,channel], filter)
# todo: stack to 3d here
如您所見,我正在為圖片中的每個通道應用一些過濾器。 如何將它們堆疊回3D陣列? (=原始圖像形狀)
謝謝
您可以使用np.dstack :
import numpy as np
image = np.random.randint(100, size=(100, 100, 3))
r, g, b = image[:, :, 0], image[:, :, 1], image[:, :, 2]
result = np.dstack((r, g, b))
print("image shape", image.shape)
print("result shape", result.shape)
產量
image shape (100, 100, 3)
result shape (100, 100, 3)
我之前用所需的形狀初始化了一個變量:
img = imread("lena.jpg")
res = np.zeros_like(img) # or simply np.copy(img)
for channel in range(3):
res[:, :, channel] = filter(img[:,:,channel], filter)
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