ContrastEnhancementType (Geotools modules 25.2 API)

Object
- Enum<ContrastEnhancementType>
- - ContrastEnhancementType

All Implemented Interfaces:

Serializable, Comparable<ContrastEnhancementType>
```
public enum ContrastEnhancementType
extends Enum<ContrastEnhancementType>
```
Starting with version 14.x, ContrastEnhancement can be customized to support different ContrastMethods algorithm and parameters.
This class contains implementations from previously defined algorithm, as well as new ones.
Define a new Type for a newly defined Method-Algorithm and implements the ContrastEnhancementType#process(ImageWorker, Hints, Map)) method.

Author:

Daniele Romagnoli, GeoSolutions SAS

Enum Constant Summary

Enum Constants
Enum Constant and Description
`EXPONENTIAL`
`HISTOGRAM`
`LOGARITHMIC`
`NORMALIZE_CLIP_TO_MINMAX`
`NORMALIZE_CLIP_TO_ZERO`
`NORMALIZE_DEFAULT`
`NORMALIZE_STRETCH_TO_MINMAX`

Field Summary

Fields
Modifier and Type	Field and Description
`static String`	`KEY_CORRECTION_FACTOR` Parameter Key used to refer to the correctionFactor value
`static String`	`KEY_DATATYPE` Parameter Key used to refer to the maximim value
`static String`	`KEY_HISTOGRAM` Parameter Key used to refer to the histogram instance
`static String`	`KEY_MAX` Parameter Key used to refer to the maximim value
`static String`	`KEY_MIN` Parameter Key used to refer to the minimim value
`static String`	`KEY_NORMALIZATION_FACTOR` Parameter Key used to refer to the normalizationFactor value
`static String`	`NORMALIZE_CLIP_TO_MINMAX_NAME`
`static String`	`NORMALIZE_CLIP_TO_ZERO_NAME`
`static String`	`NORMALIZE_STRETCH_TO_MINMAX_NAME`

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static boolean`	`areEqual(double a, double b)` Simple utility method to check Double values equality.
`static PiecewiseTransform1D<DefaultPiecewiseTransform1DElement>`	`generateGammaCorrectedPiecewise(double minimum, double maximum, double gammaValue)` Generate piecewise transformation for gamma correction
`static ContrastEnhancementType`	`getType(AbstractContrastMethodStrategy method)` Return a proper `ContrastEnhancementType` instance depending on the provided `AbstractContrastMethodStrategy`.
`static ContrastEnhancementType`	`valueOf(String name)` Returns the enum constant of this type with the specified name.
`static ContrastEnhancementType[]`	`values()` Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class Enum
clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class Object
getClass, notify, notifyAll, wait, wait, wait

- Enum Constant Detail
  - EXPONENTIAL
```
public static final ContrastEnhancementType EXPONENTIAL
```
  - LOGARITHMIC
```
public static final ContrastEnhancementType LOGARITHMIC
```
  - HISTOGRAM
```
public static final ContrastEnhancementType HISTOGRAM
```
  - NORMALIZE_DEFAULT
```
public static final ContrastEnhancementType NORMALIZE_DEFAULT
```
  - NORMALIZE_STRETCH_TO_MINMAX
```
public static final ContrastEnhancementType NORMALIZE_STRETCH_TO_MINMAX
```
  - NORMALIZE_CLIP_TO_MINMAX
```
public static final ContrastEnhancementType NORMALIZE_CLIP_TO_MINMAX
```
  - NORMALIZE_CLIP_TO_ZERO
```
public static final ContrastEnhancementType NORMALIZE_CLIP_TO_ZERO
```
- Field Detail
  - KEY_MIN
```
public static final String KEY_MIN
```
    Parameter Key used to refer to the minimim value
    
    See Also:
    
    Constant Field Values
  - KEY_MAX
```
public static final String KEY_MAX
```
    Parameter Key used to refer to the maximim value
    
    See Also:
    
    Constant Field Values
  - KEY_DATATYPE
```
public static final String KEY_DATATYPE
```
    Parameter Key used to refer to the maximim value
    
    See Also:
    
    Constant Field Values
  - KEY_HISTOGRAM
```
public static final String KEY_HISTOGRAM
```
    Parameter Key used to refer to the histogram instance
    
    See Also:
    
    Constant Field Values
  - KEY_CORRECTION_FACTOR
```
public static final String KEY_CORRECTION_FACTOR
```
    Parameter Key used to refer to the correctionFactor value
    
    See Also:
    
    Constant Field Values
  - KEY_NORMALIZATION_FACTOR
```
public static final String KEY_NORMALIZATION_FACTOR
```
    Parameter Key used to refer to the normalizationFactor value
    
    See Also:
    
    Constant Field Values
  - NORMALIZE_STRETCH_TO_MINMAX_NAME
```
public static final String NORMALIZE_STRETCH_TO_MINMAX_NAME
```
    See Also:
    
    Constant Field Values
  - NORMALIZE_CLIP_TO_MINMAX_NAME
```
public static final String NORMALIZE_CLIP_TO_MINMAX_NAME
```
    See Also:
    
    Constant Field Values
  - NORMALIZE_CLIP_TO_ZERO_NAME
```
public static final String NORMALIZE_CLIP_TO_ZERO_NAME
```
    See Also:
    
    Constant Field Values
- Method Detail
  - values
```
public static ContrastEnhancementType[] values()
```
    Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
```
for (ContrastEnhancementType c : ContrastEnhancementType.values())
    System.out.println(c);
```
    Returns:
    
    an array containing the constants of this enum type, in the order they are declared
  - valueOf
```
public static ContrastEnhancementType valueOf(String name)
```
    Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
    
    Parameters:
    
    name - the name of the enum constant to be returned.
    
    Returns:
    
    the enum constant with the specified name
    
    Throws:
    
    IllegalArgumentException - if this enum type has no constant with the specified name
    
    NullPointerException - if the argument is null
  - areEqual
```
public static boolean areEqual(double a,
                               double b)
```
    Simple utility method to check Double values equality.
  - generateGammaCorrectedPiecewise
```
public static PiecewiseTransform1D<DefaultPiecewiseTransform1DElement> generateGammaCorrectedPiecewise(double minimum,
                                                                                                       double maximum,
                                                                                                       double gammaValue)
```
    Generate piecewise transformation for gamma correction
  - getType
```
public static ContrastEnhancementType getType(AbstractContrastMethodStrategy method)
```
    Return a proper ContrastEnhancementType instance depending on the provided AbstractContrastMethodStrategy.

Enum ContrastEnhancementType

Enum Constant Summary

Field Summary

Method Summary

Methods inherited from class Enum

Methods inherited from class Object

Enum Constant Detail

EXPONENTIAL

LOGARITHMIC

HISTOGRAM

NORMALIZE_DEFAULT

NORMALIZE_STRETCH_TO_MINMAX

NORMALIZE_CLIP_TO_MINMAX

NORMALIZE_CLIP_TO_ZERO

Field Detail

KEY_MIN

KEY_MAX

KEY_DATATYPE

KEY_HISTOGRAM

KEY_CORRECTION_FACTOR

KEY_NORMALIZATION_FACTOR

NORMALIZE_STRETCH_TO_MINMAX_NAME

NORMALIZE_CLIP_TO_MINMAX_NAME

NORMALIZE_CLIP_TO_ZERO_NAME

Method Detail

values

valueOf

areEqual

generateGammaCorrectedPiecewise

getType