Trait opencv::prelude::DownhillSolverTrait
source · pub trait DownhillSolverTrait: DownhillSolverTraitConst + MinProblemSolverTrait {
// Required method
fn as_raw_mut_DownhillSolver(&mut self) -> *mut c_void;
// Provided method
fn set_init_step(&mut self, step: &impl ToInputArray) -> Result<()> { ... }
}Expand description
Mutable methods for core::DownhillSolver
Required Methods§
fn as_raw_mut_DownhillSolver(&mut self) -> *mut c_void
Provided Methods§
sourcefn set_init_step(&mut self, step: &impl ToInputArray) -> Result<()>
fn set_init_step(&mut self, step: &impl ToInputArray) -> Result<()>
Sets the initial step that will be used in downhill simplex algorithm.
Step, together with initial point (given in DownhillSolver::minimize) are two n-dimensional
vectors that are used to determine the shape of initial simplex. Roughly said, initial point
determines the position of a simplex (it will become simplex’s centroid), while step determines the
spread (size in each dimension) of a simplex. To be more precise, if are
the initial step and initial point respectively, the vertices of a simplex will be:
and
for
where
denotes
projections of the initial step of n-th coordinate (the result of projection is treated to be
vector given by
, where
form canonical basis)
§Parameters
- step: Initial step that will be used in algorithm. Roughly said, it determines the spread (size in each dimension) of an initial simplex.
Object Safety§
This trait is not object safe.