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Add support for difference-aware hash calculation

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fix docs format
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dust-to-dust 2022-04-08 11:02:00 +08:00 committed by GitHub
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commit 8f2fe15fb8
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1 changed files with 5 additions and 3 deletions
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src/PIL/Image.py
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@ -2695,7 +2695,8 @@ class Image:
def dhash(self) -> str: def dhash(self) -> str:
""" """
Calculate the dHash value of the picture. DHash value can be used to quickly determine the similarity of two pictures. Calculate the dHash value of the picture.
DHash value can be used to quickly determine the similarity of two pictures.
""" """
difference = self._difference(self) difference = self._difference(self)
decimal_value = 0 decimal_value = 0
@ -2713,6 +2714,8 @@ class Image:
:param image: PIL.Image / dHash(str) :param image: PIL.Image / dHash(str)
:param hamming_distance: :param hamming_distance:
The larger the value, the greater difference between the two pictures;
otherwise, the more similar they are.
:return: bool :return: bool
""" """
assert 0 <= hamming_distance <= 64 assert 0 <= hamming_distance <= 64
@ -2723,8 +2726,7 @@ class Image:
""" """
Calculate the Hamming distance between two pictures (based on dHash algorithm) Calculate the Hamming distance between two pictures (based on dHash algorithm)
:param image: PIL.Image / dHash(str) :param image: PIL.Image / dHash(str)
:return: hamming distance. The larger the value, the greater the difference between the two pictures; :return: hamming distance.
otherwise, the more similar they are.
""" """
if isinstance(image, str): if isinstance(image, str):
return self._hamming_distance_with_hash(image) return self._hamming_distance_with_hash(image)