Module distance

source code

Functions

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boolToUbyte(x)
Convert a boolean vector to a ubyte vector which is much more space efficient.

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ubyteToBool(x)
Convert a byte vector to a bool vector.

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hamming(a, b)

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l1(a, b)
Compute the l1 distance measure

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l2(a, b)
compute the l2 distance

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correlation(a, b)
Compute the correlation of two vectors

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Variables

[hide private]

hamming_table = array([0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, ...

__package__ = 'pyvision.other'

bits = 8

i = 255

Variables Details

[hide private]

hamming_table

Value:

array([0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4, 1, 2, 2, 3, 2, 
3, 3,
       4, 2, 3, 3, 4, 3, 4, 4, 5, 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 
3, 4,
       4, 5, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 1, 2, 2, 
3, 2,
       3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 
4, 5,
...