[−][src]Struct opencv::core::Moments

#[repr(C)]

pub struct Moments {
    pub m00: f64,
    pub m10: f64,
    pub m01: f64,
    pub m20: f64,
    pub m11: f64,
    pub m02: f64,
    pub m30: f64,
    pub m21: f64,
    pub m12: f64,
    pub m03: f64,
    pub mu20: f64,
    pub mu11: f64,
    pub mu02: f64,
    pub mu30: f64,
    pub mu21: f64,
    pub mu12: f64,
    pub mu03: f64,
    pub nu20: f64,
    pub nu11: f64,
    pub nu02: f64,
    pub nu30: f64,
    pub nu21: f64,
    pub nu12: f64,
    pub nu03: f64,
}

struct returned by cv::moments

The spatial moments \texttt{Moments::m}_{ji} are computed as:

\texttt{m} _{ji}= \sum _{x,y} \left ( \texttt{array} (x,y) \cdot x^j \cdot y^i \right )

The central moments \texttt{Moments::mu}_{ji} are computed as:

\texttt{mu} _{ji}= \sum _{x,y} \left ( \texttt{array} (x,y) \cdot (x - \bar{x} )^j \cdot (y - \bar{y} )^i \right )

where (\bar{x}, \bar{y}) is the mass center:

\bar{x} = \frac{\texttt{m}_{10}}{\texttt{m}_{00}} , \; \bar{y} = \frac{\texttt{m}_{01}}{\texttt{m}_{00}}

The normalized central moments \texttt{Moments::nu}_{ij} are computed as:

\texttt{nu} _{ji}= \frac{\texttt{mu}_{ji}}{\texttt{m}_{00}^{(i+j)/2+1}} .

Note: \texttt{mu}{00}=\texttt{m}{00}, \texttt{nu}{00}=1 \texttt{nu}{10}=\texttt{mu}{10}=\texttt{mu}{01}=\texttt{mu}_{10}=0 , hence the values are not stored.

The moments of a contour are defined in the same way but computed using the Green's formula (see http://en.wikipedia.org/wiki/Green_theorem). So, due to a limited raster resolution, the moments computed for a contour are slightly different from the moments computed for the same rasterized contour.

Note: Since the contour moments are computed using Green formula, you may get seemingly odd results for contours with self-intersections, e.g. a zero area (m00) for butterfly-shaped contours.

Fields

m00: f64m10: f64m01: f64m20: f64m11: f64m02: f64m30: f64m21: f64m12: f64m03: f64mu20: f64mu11: f64mu02: f64mu30: f64mu21: f64mu12: f64mu03: f64nu20: f64nu11: f64nu02: f64nu30: f64nu21: f64nu12: f64nu03: f64

Methods

impl Moments[src]

pub fn default() -> Result<Moments>[src]

pub fn new(
    m00: f64,
    m10: f64,
    m01: f64,
    m20: f64,
    m11: f64,
    m02: f64,
    m30: f64,
    m21: f64,
    m12: f64,
    m03: f64
) -> Result<Moments>[src]

Trait Implementations

impl Copy for Moments[src]

impl PartialEq<Moments> for Moments[src]

impl Clone for Moments[src]

fn clone_from(&mut self, source: &Self)
1.0.0
[src]

Performs copy-assignment from source. Read more

impl Debug for Moments[src]

Auto Trait Implementations

impl Send for Moments

impl Sync for Moments

Blanket Implementations

impl<T> ToOwned for T where
    T: Clone, [src]

type Owned = T

The resulting type after obtaining ownership.

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, [src]

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src]

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

The type returned in the event of a conversion error.

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src]

impl<T> Borrow<T> for T where
    T: ?Sized, [src]

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