Trait SVDTraitConst

Source

pub trait SVDTraitConst {
    // Required method
    fn as_raw_SVD(&self) -> *const c_void;

    // Provided methods
    fn u(&self) -> Mat { ... }
    fn w(&self) -> Mat { ... }
    fn vt(&self) -> Mat { ... }
    fn back_subst(
        &self,
        rhs: &impl ToInputArray,
        dst: &mut impl ToOutputArray,
    ) -> Result<()> { ... }
}

Expand description

Constant methods for core::SVD

Required Methods§

Source

fn as_raw_SVD(&self) -> *const c_void

Provided Methods§

Source

fn back_subst( &self, rhs: &impl ToInputArray, dst: &mut impl ToOutputArray, ) -> Result<()>

performs a singular value back substitution.

The method calculates a back substitution for the specified right-hand side:

$block formula$

Using this technique you can either get a very accurate solution of the convenient linear system, or the best (in the least-squares terms) pseudo-solution of an overdetermined linear system.

§Parameters

rhs: right-hand side of a linear system (u*w*v’)*dst = rhs to be solved, where A has been previously decomposed.
dst: found solution of the system.

Note: Explicit SVD with the further back substitution only makes sense if you need to solve many linear systems with the same left-hand side (for example, src ). If all you need is to solve a single system (possibly with multiple rhs immediately available), simply call solve add pass DECOMP_SVD there. It does absolutely the same thing.