#[repr(C)]
pub enum DistanceTypes {
    DIST_USER,
    DIST_L1,
    DIST_L2,
    DIST_C,
    DIST_L12,
    DIST_FAIR,
    DIST_WELSCH,
    DIST_HUBER,
}
Expand description

Distance types for Distance Transform and M-estimators

See also

distanceTransform, fitLine

Variants§

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DIST_USER

User defined distance

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DIST_L1

distance = |x1-x2| + |y1-y2|

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DIST_L2

the simple euclidean distance

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DIST_C

distance = max(|x1-x2|,|y1-y2|)

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DIST_L12

L1-L2 metric: distance = 2(sqrt(1+x*x/2) - 1))

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DIST_FAIR

distance = c^2(|x|/c-log(1+|x|/c)), c = 1.3998

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DIST_WELSCH

distance = c^2/2(1-exp(-(x/c)^2)), c = 2.9846

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DIST_HUBER

distance = |x|<c ? x^2/2 : c(|x|-c/2), c=1.345

Trait Implementations§

Returns a copy of the value. Read more
Performs copy-assignment from source. Read more
Formats the value using the given formatter. Read more
This method tests for self and other values to be equal, and is used by ==.
This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

Auto Trait Implementations§

Blanket Implementations§

Gets the TypeId of self. Read more
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Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The resulting type after obtaining ownership.
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The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.