LookupFilter

java.lang.Object
- com.jhlabs.image.AbstractBufferedImageOp
- - com.jhlabs.image.PointFilter
  - - com.jhlabs.image.LookupFilter

All Implemented Interfaces:

java.awt.image.BufferedImageOp, java.lang.Cloneable
```
public class LookupFilter
extends PointFilter
```
A filter which uses the brightness of each pixel to lookup a color from a colormap.

Field Summary
- Fields inherited from class com.jhlabs.image.PointFilter
  canFilterIndexColorModel

Constructor Summary

Constructors
Constructor Description

LookupFilter()
Construct a LookupFilter.

LookupFilter(Colormap colormap)
Construct a LookupFilter.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`filterRGB(int x, int y, int rgb)`
`Colormap`	`getColormap()`	Get the colormap to be used for the filter.
`void`	`setColormap(Colormap colormap)`	Set the colormap to be used for the filter.
`java.lang.String`	`toString()`

Methods inherited from class com.jhlabs.image.PointFilter
filter, setDimensions

Methods inherited from class com.jhlabs.image.AbstractBufferedImageOp
clone, createCompatibleDestImage, getBounds2D, getPoint2D, getRenderingHints, getRGB, setRGB, stringToColor

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

- Constructor Detail
  - LookupFilter
```
public LookupFilter()
```
    Construct a LookupFilter.
  - LookupFilter
```
public LookupFilter(Colormap colormap)
```
    Construct a LookupFilter.
    
    Parameters:
    
    colormap - the color map
- Method Detail
  - setColormap
```
public void setColormap(Colormap colormap)
```
    Set the colormap to be used for the filter.
    
    Parameters:
    
    colormap - the colormap
    
    See Also:
    
    getColormap()
  - getColormap
```
public Colormap getColormap()
```
    Get the colormap to be used for the filter.
    
    Returns:
    
    the colormap
    
    See Also:
    
    setColormap(com.jhlabs.image.Colormap)
  - filterRGB
```
public int filterRGB(int x,
                     int y,
                     int rgb)
```
    Specified by:
    
    filterRGB in class PointFilter
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object