com.aspose.imaging

Class PaletteMiningMethod

java.lang.Object

com.aspose.ms.System.ValueType<com.aspose.ms.System.Enum>

com.aspose.ms.System.Enum

com.aspose.imaging.PaletteMiningMethod

public final class PaletteMiningMethod
extends com.aspose.ms.System.Enum

The image palette mining method

Code example:

The following example shows how to compress a PNG image, using indexed color with best fit palette

// Loads png image        
String sourceFilePath = "OriginalRings.png";
String outputFilePath = "OriginalRingsOutput.png";
try (com.aspose.imaging.Image image = com.aspose.imaging.Image.load(sourceFilePath))
{
    com.aspose.imaging.imageoptions.PngOptions options = new com.aspose.imaging.imageoptions.PngOptions();
    options.setProgressive(true);
    // Use indexed color type
    options.setColorType(com.aspose.imaging.fileformats.png.PngColorType.IndexedColor);
    // Use maximal compression
    options.setCompressionLevel(9);
    // Get the closest 8-bit color palette which covers as many pixels as possible, so that a palettized image
    // is almost visually indistinguishable from a non-palletized one.
    options.setPalette(com.aspose.imaging.ColorPaletteHelper.getCloseImagePalette((com.aspose.imaging.RasterImage)image, 
                                256, Aspose.Imaging.PaletteMiningMethod.Histogram));
                     
    image.save(outputFilePath, options);
}
// The output file size should be significantly reduced

Nested Class Summary

Nested classes/interfaces inherited from class com.aspose.ms.System.Enum

com.aspose.ms.System.Enum.AbstractEnum, com.aspose.ms.System.Enum.FlaggedEnum, com.aspose.ms.System.Enum.ObjectEnum, com.aspose.ms.System.Enum.SimpleEnum

Field Summary

Fields

Modifier and Type	Field and Description
static int	ColorClustering The color clustering method
static int	Histogram The histogram method
static int	UseCurrentPalette Use exisiting palette of the image

Fields inherited from class com.aspose.ms.System.Enum

EnumSeparatorCharArray

Method Summary

Methods inherited from class com.aspose.ms.System.Enum

Clone, CloneTo, format, format, get_Caption, get_Value, getName, getName, getNames, getNames, getNames, getUnderlyingType, getUnderlyingType, getValue, getValues, getValues, getValues, isDefined, isDefined, isDefined, isDefined, isDefined, parse, parse, parse, parse, register, toObject, toString, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

UseCurrentPalette

public static final int UseCurrentPalette

Use exisiting palette of the image

See Also:

Constant Field Values

ColorClustering

public static final int ColorClustering

The color clustering method

See Also:

Constant Field Values

Histogram

public static final int Histogram

The histogram method

See Also:

Constant Field Values