opencv::ml

Struct ParamGrid

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pub struct ParamGrid { /* private fields */ }
Expand description

The structure represents the logarithmic grid range of statmodel parameters.

It is used for optimizing statmodel accuracy by varying model parameters, the accuracy estimate being computed by cross-validation.

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impl ParamGrid

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pub fn default() -> Result<ParamGrid>

Default constructor

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pub fn for_range( _min_val: f64, _max_val: f64, _log_step: f64, ) -> Result<ParamGrid>

Constructor with parameters

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pub fn create( min_val: f64, max_val: f64, logstep: f64, ) -> Result<Ptr<ParamGrid>>

Creates a ParamGrid Ptr that can be given to the %SVM::trainAuto method

§Parameters
  • minVal: minimum value of the parameter grid
  • maxVal: maximum value of the parameter grid
  • logstep: Logarithmic step for iterating the statmodel parameter
§C++ default parameters
  • min_val: 0.
  • max_val: 0.
  • logstep: 1.
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pub fn create_def() -> Result<Ptr<ParamGrid>>

Creates a ParamGrid Ptr that can be given to the %SVM::trainAuto method

§Parameters
  • minVal: minimum value of the parameter grid
  • maxVal: maximum value of the parameter grid
  • logstep: Logarithmic step for iterating the statmodel parameter
§Note

This alternative version of ParamGrid::create function uses the following default values for its arguments:

  • min_val: 0.
  • max_val: 0.
  • logstep: 1.

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impl Boxed for ParamGrid

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unsafe fn from_raw(ptr: <ParamGrid as OpenCVFromExtern>::ExternReceive) -> Self

Wrap the specified raw pointer Read more
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fn into_raw(self) -> <ParamGrid as OpenCVTypeExternContainer>::ExternSendMut

Return the underlying raw pointer while consuming this wrapper. Read more
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fn as_raw(&self) -> <ParamGrid as OpenCVTypeExternContainer>::ExternSend

Return the underlying raw pointer. Read more
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fn as_raw_mut( &mut self, ) -> <ParamGrid as OpenCVTypeExternContainer>::ExternSendMut

Return the underlying mutable raw pointer Read more
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impl Debug for ParamGrid

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Drop for ParamGrid

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fn drop(&mut self)

Executes the destructor for this type. Read more
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impl ParamGridTrait for ParamGrid

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fn as_raw_mut_ParamGrid(&mut self) -> *mut c_void

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fn set_min_val(&mut self, val: f64)

Minimum value of the statmodel parameter. Default value is 0.
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fn set_max_val(&mut self, val: f64)

Maximum value of the statmodel parameter. Default value is 0.
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fn set_log_step(&mut self, val: f64)

Logarithmic step for iterating the statmodel parameter. Read more
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impl ParamGridTraitConst for ParamGrid

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fn as_raw_ParamGrid(&self) -> *const c_void

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fn min_val(&self) -> f64

Minimum value of the statmodel parameter. Default value is 0.
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fn max_val(&self) -> f64

Maximum value of the statmodel parameter. Default value is 0.
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fn log_step(&self) -> f64

Logarithmic step for iterating the statmodel parameter. Read more
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impl Send for ParamGrid

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

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

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impl<Mat> ModifyInplace for Mat
where Mat: Boxed,

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unsafe fn modify_inplace<Res>( &mut self, f: impl FnOnce(&Mat, &mut Mat) -> Res, ) -> Res

Helper function to call OpenCV functions that allow in-place modification of a Mat or another similar object. By passing a mutable reference to the Mat to this function your closure will get called with the read reference and a write references to the same Mat. This is unsafe in a general case as it leads to having non-exclusive mutable access to the internal data, but it can be useful for some performance sensitive operations. One example of an OpenCV function that allows such in-place modification is imgproc::threshold. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.