Improving normalization by reducing memory allocations #1889
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* using `np.ndarray.astype(..., copy=False)` to prevent new array creation when the types are the same * using inplace numpy matrix operations * using inplace `np.clip`
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thanks a lot! |
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np.ndarray.astype(..., copy=False)to prevent new array creation when the types are the samenp.clipThis version is up to 20x times faster for big
(512, 512, 512)CT cases.