Class J2KImageReadParam
java.lang.Object
javax.imageio.IIOParam
javax.imageio.ImageReadParam
com.sun.media.imageio.plugins.jpeg2000.J2KImageReadParam
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J2KImageReadParamJava
A subclass of
ImageReadParam for reading images in
the JPEG 2000 format.
The decoding parameters for JPEG 2000 are listed below:
| Parameter Name | Description |
|---|---|
| decodingRate | Specifies the decoding rate in bits per pixel (bpp) where the
number of pixels is related to the image's original size (Note:
this parameter is not affected by resolution).
The default is Double.MAX_VALUE.
It means decoding with the encoding rate.
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| resolution | Specifies the resolution level wanted for the decoded image
(0 means the lowest available resolution, the resolution
level gives an image with the original dimension). If the given index
is greater than the number of available resolution levels of the
compressed image, the decoded image has the lowest available
resolution (among all tile-components). This parameter affects only
the inverse wavelet transform and not the number of bytes read by the
codestream parser, which depends only on decodingRate.
The default value, -1, means to use the resolution level at encoding.
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Field Summary
Fields inherited from class javax.imageio.ImageReadParam
canSetSourceRenderSize, destination, destinationBands, minProgressivePass, numProgressivePasses, sourceRenderSizeFields inherited from class javax.imageio.IIOParam
controller, defaultController, destinationOffset, destinationType, sourceBands, sourceRegion, sourceXSubsampling, sourceYSubsampling, subsamplingXOffset, subsamplingYOffset -
Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptiondoubleGetsdecodingRate.intGetsresolution.voidsetDecodingRate(double rate) SetsdecodingRate.voidsetResolution(int resolution) Setsresolution.Methods inherited from class javax.imageio.ImageReadParam
canSetSourceRenderSize, getDestination, getDestinationBands, getSourceMaxProgressivePass, getSourceMinProgressivePass, getSourceNumProgressivePasses, getSourceRenderSize, setDestination, setDestinationBands, setDestinationType, setSourceProgressivePasses, setSourceRenderSizeMethods inherited from class javax.imageio.IIOParam
activateController, getController, getDefaultController, getDestinationOffset, getDestinationType, getSourceBands, getSourceRegion, getSourceXSubsampling, getSourceYSubsampling, getSubsamplingXOffset, getSubsamplingYOffset, hasController, setController, setDestinationOffset, setSourceBands, setSourceRegion, setSourceSubsampling
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Constructor Details
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J2KImageReadParam
public J2KImageReadParam()Constructs a default instance ofJ2KImageReadParam.
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Method Details
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setDecodingRate
public void setDecodingRate(double rate) SetsdecodingRate.- Parameters:
rate- the decoding rate in bits per pixel.- See Also:
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getDecodingRate
public double getDecodingRate()GetsdecodingRate.- Returns:
- the decoding rate in bits per pixel.
- See Also:
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setResolution
public void setResolution(int resolution) Setsresolution.- Parameters:
resolution- the resolution level with 0 being the lowest available.- See Also:
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getResolution
public int getResolution()Getsresolution.- Returns:
- the resolution level with 0 being the lowest available.
- See Also:
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