是否有可能在python中加速嵌套for循环?
我必须逐个像素地浏览整个图像。我能做些什么来加快速度吗?:
sz = np.shape(img)
prob = np.zeros((sz[0],sz[1]))
for i in range(sz[0]):
for j in range(sz[1]):
prob[i, j] = rgbMtx[img[i, j, 0], img[i, j, 1], img[i, j, 2]]
答案 0 :(得分:1)
怎么样:
i, j, k = img[:, :, 0], img[:, :, 1], img[:, :, 2]
prob = rgMtx[i, j, k]