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Image Quantization #2

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Image Quantization #2

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5 changes: 4 additions & 1 deletion dmtools/io.py
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Original file line number Diff line number Diff line change
Expand Up @@ -124,6 +124,8 @@ def _continuous(image: np.ndarray, k: int) -> np.ndarray:
Returns:
np.ndarray: Continuous image with values in [0,1].
"""
# TODO: Consider changing to
# (image / (k+1)) + (1 / (2 * (k+1)))
return image / k


Expand All @@ -137,7 +139,8 @@ def _discretize(image: np.ndarray, k: int) -> np.ndarray:
Returns:
np.ndarray: Discrete image with values in [0,k].
"""
# TODO: Is this the right way to discretize?
# TODO: Consider changing to
# np.ceil(image * (k+1)).astype(int) + 1
return np.ceil(k*image - 0.5).astype(int)


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