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java.lang.Object | +--javax.imageio.IIOParam | +--javax.imageio.ImageReadParam | +--com.sun.media.imageio.plugins.jpeg2000.J2KImageReadParam
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
codestream is either parsed (default) or truncated depending
parsingEnabled . The default is Double.MAX_VALUE .
It means decoding with the encoding rate.
|
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.
|
Field Summary |
Fields inherited from class javax.imageio.ImageReadParam |
canSetSourceRenderSize, destination, destinationBands, minProgressivePass, numProgressivePasses, sourceRenderSize |
Fields inherited from class javax.imageio.IIOParam |
controller, defaultController, destinationOffset, destinationType, sourceBands, sourceRegion, sourceXSubsampling, sourceYSubsampling, subsamplingXOffset, subsamplingYOffset |
Constructor Summary | |
J2KImageReadParam()
Constructs a default instance of J2KImageReadParam . |
Method Summary | |
double |
getDecodingRate()
Gets decodingRate . |
int |
getResolution()
Gets resolution . |
void |
setDecodingRate(double rate)
Sets decodingRate . |
void |
setResolution(int resolution)
Sets resolution . |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public J2KImageReadParam()
J2KImageReadParam
.
Method Detail |
public void setDecodingRate(double rate)
decodingRate
.
rate
- the decoding rate in bits per pixel.getDecodingRate()
public double getDecodingRate()
decodingRate
.
setDecodingRate(double)
public void setResolution(int resolution)
resolution
.
resolution
- the resolution level with 0 being
the lowest available.getResolution()
public int getResolution()
resolution
.
setResolution(int)
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