org.apache.sanselan.formats.tiff.photometricinterpreters

Class PhotometricInterpreterYCbCr

java.lang.Object

org.apache.sanselan.formats.tiff.photometricinterpreters.PhotometricInterpreter

org.apache.sanselan.formats.tiff.photometricinterpreters.PhotometricInterpreterYCbCr

public class PhotometricInterpreterYCbCr
extends PhotometricInterpreter

Field Summary

Fields inherited from class org.apache.sanselan.formats.tiff.photometricinterpreters.PhotometricInterpreter

bitsPerSample, height, predictor, samplesPerPixel, width

Constructor Summary

Constructors

Constructor and Description
PhotometricInterpreterYCbCr(double[] fYCbCrCoefficients, int[] fYCbCrPositioning, int[] fYCbCrSubSampling, double[] fReferenceBlackWhite, int fSamplesPerPixel, int[] fBitsPerSample, int Predictor, int width, int height)

Method Summary

Methods

Modifier and Type	Method and Description
int	convertYCbCrtoRGB(int Y, int Cb, int Cr) This method converts a YUV (aka YCbCr) colorspace to a RGB colorspace.
void	interpretPixel(BufferedImage bi, int[] samples, int x, int y)
int	limit(int value, int min, int max)

Methods inherited from class org.apache.sanselan.formats.tiff.photometricinterpreters.PhotometricInterpreter

dumpstats

Methods inherited from class java.lang.Object

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

Constructor Detail

PhotometricInterpreterYCbCr

public PhotometricInterpreterYCbCr(double[] fYCbCrCoefficients,
                           int[] fYCbCrPositioning,
                           int[] fYCbCrSubSampling,
                           double[] fReferenceBlackWhite,
                           int fSamplesPerPixel,
                           int[] fBitsPerSample,
                           int Predictor,
                           int width,
                           int height)

Method Detail

limit

public int limit(int value,
        int min,
        int max)

convertYCbCrtoRGB

public int convertYCbCrtoRGB(int Y,
                    int Cb,
                    int Cr)

This method converts a YUV (aka YCbCr) colorspace to a RGB colorspace. This is handy when trying to reconstruct an image in Java from YCbCr transmitted data. This routine expects the data to fall in the standard PC 0..255 range per pixel, with the array dimensions corresponding to the imageWidth and imageHeight. These variables are either set manually in the case of a null constructor, or they are automatically calculated from the image parameter constructor.

Parameters:

Y - The Y component set.

Cb - The Cb component set.

Cr - The Cr component set.

Returns:

R The R component.

interpretPixel

public void interpretPixel(BufferedImage bi,
                  int[] samples,
                  int x,
                  int y)
                    throws ImageReadException,
                           IOException

Specified by:

interpretPixel in class PhotometricInterpreter

Throws:

ImageReadException

IOException