Moments (JavaCPP Presets for OpenCV 4.3.0-1.5.3 API)

java.lang.Object
- org.bytedeco.javacpp.Pointer
- - org.bytedeco.opencv.opencv_core.Moments

All Implemented Interfaces:

AutoCloseable
```
@Namespace(value="cv")
 @NoOffset
 @Properties(inherit=opencv_core.class)
public class Moments
extends Pointer
```
\} core_basic
///////////////////////// raster image moments //////////////////////////
\addtogroup imgproc_shape \{
/** \brief 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 ). 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.

Nested Class Summary
- Nested classes/interfaces inherited from class org.bytedeco.javacpp.Pointer
  Pointer.CustomDeallocator, Pointer.Deallocator, Pointer.NativeDeallocator, Pointer.ReferenceCounter

Field Summary
- Fields inherited from class org.bytedeco.javacpp.Pointer
  address, capacity, limit, position

Constructor Summary

Constructors
Constructor and Description
`Moments()` the default constructor
`Moments(double m00, double m10, double m01, double m20, double m11, double m02, double m30, double m21, double m12, double m03)` the full constructor
`Moments(long size)` Native array allocator.
`Moments(Pointer p)` Pointer cast constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`double`	`m00()` \name spatial moments \{
`Moments`	`m00(double setter)`
`double`	`m01()`
`Moments`	`m01(double setter)`
`double`	`m02()`
`Moments`	`m02(double setter)`
`double`	`m03()`
`Moments`	`m03(double setter)`
`double`	`m10()`
`Moments`	`m10(double setter)`
`double`	`m11()`
`Moments`	`m11(double setter)`
`double`	`m12()`
`Moments`	`m12(double setter)`
`double`	`m20()`
`Moments`	`m20(double setter)`
`double`	`m21()`
`Moments`	`m21(double setter)`
`double`	`m30()`
`Moments`	`m30(double setter)`
`double`	`mu02()`
`Moments`	`mu02(double setter)`
`double`	`mu03()`
`Moments`	`mu03(double setter)`
`double`	`mu11()`
`Moments`	`mu11(double setter)`
`double`	`mu12()`
`Moments`	`mu12(double setter)`
`double`	`mu20()` \}
`Moments`	`mu20(double setter)`
`double`	`mu21()`
`Moments`	`mu21(double setter)`
`double`	`mu30()`
`Moments`	`mu30(double setter)`
`double`	`nu02()`
`Moments`	`nu02(double setter)`
`double`	`nu03()`
`Moments`	`nu03(double setter)`
`double`	`nu11()`
`Moments`	`nu11(double setter)`
`double`	`nu12()`
`Moments`	`nu12(double setter)`
`double`	`nu20()` \}
`Moments`	`nu20(double setter)`
`double`	`nu21()`
`Moments`	`nu21(double setter)`
`double`	`nu30()`
`Moments`	`nu30(double setter)`
`Moments`	`position(long position)`

Methods inherited from class org.bytedeco.javacpp.Pointer
address, asBuffer, asByteBuffer, availablePhysicalBytes, calloc, capacity, capacity, close, deallocate, deallocate, deallocateReferences, deallocator, deallocator, equals, fill, formatBytes, free, hashCode, isNull, isNull, limit, limit, malloc, maxBytes, maxPhysicalBytes, memchr, memcmp, memcpy, memmove, memset, offsetof, parseBytes, physicalBytes, position, put, realloc, referenceCount, releaseReference, retainReference, setNull, sizeof, toString, totalBytes, totalPhysicalBytes, withDeallocator, zero

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Moments
```
public Moments(Pointer p)
```
Pointer cast constructor. Invokes Pointer.Pointer(Pointer).

Moments
```
public Moments(long size)
```
Native array allocator. Access with Pointer.position(long).

Moments
```
public Moments()
```
the default constructor

Moments

public Moments(double m00,
               double m10,
               double m01,
               double m20,
               double m11,
               double m02,
               double m30,
               double m21,
               double m12,
               double m03)

the full constructor

Method Detail

position

public Moments position(long position)

Overrides:: position in class Pointer

m00
```
public double m00()
```
\name spatial moments \{

m00
```
public Moments m00(double setter)
```

m10
```
public double m10()
```

m10
```
public Moments m10(double setter)
```

m01
```
public double m01()
```

m01
```
public Moments m01(double setter)
```

m20
```
public double m20()
```

m20
```
public Moments m20(double setter)
```

m11
```
public double m11()
```

m11
```
public Moments m11(double setter)
```

m02
```
public double m02()
```

m02
```
public Moments m02(double setter)
```

m30
```
public double m30()
```

m30
```
public Moments m30(double setter)
```

m21
```
public double m21()
```

m21
```
public Moments m21(double setter)
```

m12
```
public double m12()
```

m12
```
public Moments m12(double setter)
```

m03
```
public double m03()
```

m03
```
public Moments m03(double setter)
```

mu20
```
public double mu20()
```
\}
\name central moments \{

mu20
```
public Moments mu20(double setter)
```

mu11
```
public double mu11()
```

mu11
```
public Moments mu11(double setter)
```

mu02
```
public double mu02()
```

mu02
```
public Moments mu02(double setter)
```

mu30
```
public double mu30()
```

mu30
```
public Moments mu30(double setter)
```

mu21
```
public double mu21()
```

mu21
```
public Moments mu21(double setter)
```

mu12
```
public double mu12()
```

mu12
```
public Moments mu12(double setter)
```

mu03
```
public double mu03()
```

mu03
```
public Moments mu03(double setter)
```

nu20
```
public double nu20()
```
\}
\name central normalized moments \{

nu20
```
public Moments nu20(double setter)
```

nu11
```
public double nu11()
```

nu11
```
public Moments nu11(double setter)
```

nu02
```
public double nu02()
```

nu02
```
public Moments nu02(double setter)
```

nu30
```
public double nu30()
```

nu30
```
public Moments nu30(double setter)
```

nu21
```
public double nu21()
```

nu21
```
public Moments nu21(double setter)
```

nu12
```
public double nu12()
```

nu12
```
public Moments nu12(double setter)
```

nu03
```
public double nu03()
```

nu03
```
public Moments nu03(double setter)
```

Class Moments

Nested Class Summary

Nested classes/interfaces inherited from class org.bytedeco.javacpp.Pointer

Field Summary

Fields inherited from class org.bytedeco.javacpp.Pointer

Constructor Summary

Method Summary

Methods inherited from class org.bytedeco.javacpp.Pointer

Methods inherited from class java.lang.Object

Constructor Detail

Moments

Moments

Moments

Moments

Method Detail

position

m00

m00

m10

m10

m01

m01

m20

m20

m11

m11

m02

m02

m30

m30

m21

m21

m12

m12

m03

m03

mu20

mu20

mu11

mu11

mu02

mu02

mu30

mu30

mu21

mu21

mu12

mu12

mu03

mu03

nu20

nu20

nu11

nu11

nu02

nu02

nu30

nu30

nu21

nu21

nu12

nu12

nu03

nu03