Quadric (ImageJ2 Javadocs 0-SNAPSHOT API)

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java.lang.Object
- net.imagej.ops.AbstractOp
- - net.imagej.ops.special.AbstractUnaryOp<I,O>
  - - net.imagej.ops.special.function.AbstractUnaryFunctionOp<Collection<org.joml.Vector3d>,org.joml.Matrix4d>
    - - net.imagej.ops.stats.regression.leastSquares.Quadric

All Implemented Interfaces:

Runnable, Contingent, Environmental, Initializable, Op, Ops.Stats.LeastSquares, NullaryFunctionOp<org.joml.Matrix4d>, UnaryFunctionOp<Collection<org.joml.Vector3d>,org.joml.Matrix4d>, NullaryOp<org.joml.Matrix4d>, Output<org.joml.Matrix4d>, SpecialOp, UnaryInput<Collection<org.joml.Vector3d>>, UnaryOp<Collection<org.joml.Vector3d>,org.joml.Matrix4d>, Threadable, Command, SciJavaPlugin
```
public class Quadric
extends AbstractUnaryFunctionOp<Collection<org.joml.Vector3d>,org.joml.Matrix4d>
implements Ops.Stats.LeastSquares, Contingent
```
An op that fits a quadratic surface (quadric) into a set of points.
The op first solves the quadric that best fits the point cloud by minimising the distance by least squares fitting. It's found by solving a polynomial - the general equation of a quadric. There are no guarantees about the type of the quadric solved, and it can be real or imaginary. The method is sensitive to outlier points.

The op is based on the the implementations of Yury Petrov & KalebKE.

Author:

Richard Domander (Royal Veterinary College, London)

Nested Class Summary
- Nested classes/interfaces inherited from interface net.imagej.ops.special.SpecialOp
  SpecialOp.Flavor

Field Summary

Fields
Modifier and Type Field and Description

static int MIN_DATA
Minimum number of points in the input collection needed to fit a quadric equation.
- Fields inherited from interface net.imagej.ops.Ops.Stats.LeastSquares
  NAME

Constructor Summary

Constructors
Constructor and Description

Quadric()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`org.joml.Matrix4d`	`calculate(Collection<org.joml.Vector3d> points)` Calculates the output given some input.
`boolean`	`conforms()` True if the contingency holds; i.e., the current circumstances conform to the contingency's requirements.

Methods inherited from class net.imagej.ops.special.function.AbstractUnaryFunctionOp
in, out, run, setInput

Methods inherited from class net.imagej.ops.AbstractOp
ops, setEnvironment

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

Methods inherited from interface java.lang.Runnable
run

Methods inherited from interface net.imagej.ops.Environmental
ops, setEnvironment

Methods inherited from interface net.imagej.ops.special.function.UnaryFunctionOp
calculate, getIndependentInstance, run

Methods inherited from interface net.imagej.ops.special.UnaryOp
getArity

Methods inherited from interface net.imagej.ops.special.function.NullaryFunctionOp
run

Methods inherited from interface net.imagej.ops.special.SpecialOp
candidates, filterArity, op

Methods inherited from interface net.imagej.ops.Initializable
initialize

- Field Detail
  - MIN_DATA
```
public static final int MIN_DATA
```
    Minimum number of points in the input collection needed to fit a quadric equation.
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - Quadric
```
public Quadric()
```
- Method Detail
  - calculate
```
public org.joml.Matrix4d calculate(Collection<org.joml.Vector3d> points)
```
    Description copied from interface: UnaryFunctionOp
    
    Calculates the output given some input.
    
    Specified by:
    
    calculate in interface UnaryFunctionOp<Collection<org.joml.Vector3d>,org.joml.Matrix4d>
    
    Parameters:
    
    points - Argument to the function
    
    Returns:
    
    output Result of the function
  - conforms
```
public boolean conforms()
```
    Description copied from interface: Contingent
    
    True if the contingency holds; i.e., the current circumstances conform to the contingency's requirements.
    
    Specified by:
    
    conforms in interface Contingent

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