ij.process
Class ByteProcessor

java.lang.Object
  ij.process.ImageProcessor
      ij.process.ByteProcessor

Direct Known Subclasses:

BinaryProcessor

public class ByteProcessor
extends ImageProcessor

This is an 8-bit image and methods that operate on that image. Based on the ImageProcessor class from "KickAss Java Programming" by Tonny Espeset (http://www.sn.no/~espeset).

Field Summary

protected byte[]	pixels
protected byte[]	snapshotPixels

Fields inherited from class ij.process.ImageProcessor

baseCM, BLACK, BLACK_AND_WHITE_LUT, bLUT1, bLUT2, cm, cTable, cx, cy, font, fontMetrics, gLUT1, gLUT2, height, histogramSize, imageSource, interpolate, inversionTested, invertedLut, lineWidth, lutAnimation, maxThreshold, minThreshold, NO_LUT_UPDATE, NO_THRESHOLD, RED_LUT, rLUT1, rLUT2, roiHeight, roiWidth, roiX, roiY, snapshotHeight, snapshotWidth, width, xMax, xMin, yMax, yMin

Constructor Summary

ByteProcessor(java.awt.Image img)
Creates a ByteProcessor from an AWT Image.

ByteProcessor(int width, int height)
Creates a blank ByteProcessor of the specified dimensions.

ByteProcessor(int width, int height, byte[] pixels, java.awt.image.ColorModel cm)
Creates a ByteProcessor from a pixel array and IndexColorModel.

Method Summary

void	applyLut()
void	applyTable(int[] lut) Transforms the image or ROI using a lookup table.
void	autoThreshold() Converts the image to binary using an automatically determined threshold.
void	convolve3x3(int[] kernel) 3x3 convolution contributed by Glynne Casteel.
void	copyBits(ImageProcessor ip, int xloc, int yloc, int mode) Copies the image contained in 'ip' to (xloc, yloc) using one of the transfer modes defined in the Blitter interface.
java.awt.Image	createImage() Returns a copy of this image is the form of an AWT Image.
ImageProcessor	createProcessor(int width, int height) Returns a new, blank ByteProcessor with the specified width and height.
ImageProcessor	crop() Creates a new processor containing an image that corresponds to the current ROI.
void	dilate() Dilates the image or ROI using a 3x3 minimum filter.
void	drawPixel(int x, int y) Draws a pixel in the current foreground color.
void	erode() Erodes the image or ROI using a 3x3 maximum filter.
void	fill(int[] mask) Fills pixels that are within roi and part of the mask.
void	filter(int type) Filters using a 3x3 neighborhood.
int	getAutoThreshold() Iterative thresholding technique, described originally by Ridler & Calvard in "PIcture Thresholding Using an Iterative Selection Method", IEEE transactions on Systems, Man and Cybernetics, August, 1978.
int[]	getHistogram() Returns the histogram of the image or ROI.
int[]	getHistogram(int[] mask)
double	getInterpolatedPixel(double x, double y) Uses bilinear interpolation to find the pixel value at real coordinates (x,y).
double	getMax() Returns the largest displayed pixel value.
double	getMin() Returns the smallest displayed pixel value.
int	getPixel(int x, int y) Returns the value of the pixel at (x,y).
java.lang.Object	getPixels() Returns a reference to the byte array containing this image's pixel data.
java.lang.Object	getPixelsCopy() Returns a reference to this image's snapshot (undo) byte array.
float	getPixelValue(int x, int y) Returns the value of the pixel at (x,y).
void	medianFilter() A 3x3 median filter.
void	noise(double range) Adds random noise to the image or ROI.
void	outline()
void	putPixel(int x, int y, int value) Stores the specified value at (x,y).
void	putPixelValue(int x, int y, double value) Stores the specified real value at (x,y).
void	reset() Reset the image from snapshot.
void	reset(int[] mask) Restore pixels that are within roi but not part of mask.
void	resetMinAndMax() Resets this image's LUT.
ImageProcessor	resize(int dstWidth, int dstHeight) Creates a new ByteProcessor containing a scaled copy of this image or selection.
void	rotate(double angle) Rotates the image or ROI 'angle' degrees clockwise.
void	scale(double xScale, double yScale) Scales the image or selection using the specified scale factors.
void	setColor(java.awt.Color color) Sets the foreground drawing color.
void	setMinAndMax(double min, double max) Maps the entries in this image's LUT from min-max to 0-255.
void	setPixels(java.lang.Object pixels) Sets a new pixel array for the image and resets the snapshot buffer.
void	setValue(double value) Sets the default fill/draw value, where 0<=value<=255.
void	skeletonize()
void	snapshot() Make a snapshot of the current image.
void	threshold(int level)

Methods inherited from class ij.process.ImageProcessor

add, and, convertToByte, convertToFloat, convertToRGB, convertToShort, drawDot, drawDot2, drawString, duplicate, fill, findEdges, flipHorizontal, flipVertical, gamma, getBestIndex, getColorModel, getColumn, getHeight, getHistogramSize, getImageSource, getLine, getMask, getMaxThreshold, getMinThreshold, getRoi, getRow, getStringWidth, getWidth, hideProgress, insert, invert, invertLut, isInvertedLut, isKillable, lineTo, log, makeDefaultColorModel, moveTo, multiply, or, putColumn, putRow, rotateLeft, rotateRight, setCalibrationTable, setColor, setColorModel, setFont, setHistogramSize, setInterpolate, setLineWidth, setLutAnimation, setMask, setProgressBar, setRoi, setRoi, setThreshold, sharpen, showProgress, smooth, toString, xor

Methods inherited from class java.lang.Object

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

Field Detail

pixels

protected byte[] pixels

snapshotPixels

protected byte[] snapshotPixels

Constructor Detail

ByteProcessor

public ByteProcessor(java.awt.Image img)

Creates a ByteProcessor from an AWT Image.

ByteProcessor

public ByteProcessor(int width,
                     int height)

Creates a blank ByteProcessor of the specified dimensions.

ByteProcessor

public ByteProcessor(int width,
                     int height,
                     byte[] pixels,
                     java.awt.image.ColorModel cm)

Creates a ByteProcessor from a pixel array and IndexColorModel.

Method Detail

createImage

public java.awt.Image createImage()

Description copied from class: ImageProcessor

Returns a copy of this image is the form of an AWT Image.

Specified by:

createImage in class ImageProcessor

createProcessor

public ImageProcessor createProcessor(int width,
                                      int height)

Returns a new, blank ByteProcessor with the specified width and height.

Specified by:

createProcessor in class ImageProcessor

crop

public ImageProcessor crop()

Description copied from class: ImageProcessor

Creates a new processor containing an image that corresponds to the current ROI.

Specified by:

crop in class ImageProcessor

snapshot

public void snapshot()

Make a snapshot of the current image.

Specified by:

snapshot in class ImageProcessor

reset

public void reset()

Reset the image from snapshot.

Specified by:

reset in class ImageProcessor

reset

public void reset(int[] mask)

Restore pixels that are within roi but not part of mask.

Specified by:

reset in class ImageProcessor

fill

public void fill(int[] mask)

Fills pixels that are within roi and part of the mask.

Specified by:

fill in class ImageProcessor

getPixel

public int getPixel(int x,
                    int y)

Description copied from class: ImageProcessor

Returns the value of the pixel at (x,y). For RGB images, the argb values are packed in an int. For float images, the the value must be converted using Float.intBitsToFloat().

Specified by:

getPixel in class ImageProcessor

getInterpolatedPixel

public double getInterpolatedPixel(double x,
                                   double y)

Uses bilinear interpolation to find the pixel value at real coordinates (x,y).

Specified by:

getInterpolatedPixel in class ImageProcessor

getPixelValue

public float getPixelValue(int x,
                           int y)

Description copied from class: ImageProcessor

Returns the value of the pixel at (x,y). For byte and short images, returns a calibrated value if a calibration table has been set using setCalibraionTable(). For RGB images, returns the luminance value.

Specified by:

getPixelValue in class ImageProcessor

setColor

public void setColor(java.awt.Color color)

Sets the foreground drawing color.

Specified by:

setColor in class ImageProcessor

setValue

public void setValue(double value)

Sets the default fill/draw value, where 0<=value<=255.

Specified by:

setValue in class ImageProcessor

putPixelValue

public void putPixelValue(int x,
                          int y,
                          double value)

Stores the specified real value at (x,y).

Specified by:

putPixelValue in class ImageProcessor

putPixel

public void putPixel(int x,
                     int y,
                     int value)

Stores the specified value at (x,y).

Specified by:

putPixel in class ImageProcessor

drawPixel

public void drawPixel(int x,
                      int y)

Draws a pixel in the current foreground color.

Specified by:

drawPixel in class ImageProcessor

getPixels

public java.lang.Object getPixels()

Returns a reference to the byte array containing this image's pixel data. To avoid sign extension, the pixel values must be accessed using a mask (e.g. int i = pixels[j]&0xff).

Specified by:

getPixels in class ImageProcessor

getPixelsCopy

public java.lang.Object getPixelsCopy()

Returns a reference to this image's snapshot (undo) byte array. If the snapshot array is null, returns a copy of the pixel data.

Specified by:

getPixelsCopy in class ImageProcessor

setPixels

public void setPixels(java.lang.Object pixels)

Description copied from class: ImageProcessor

Sets a new pixel array for the image and resets the snapshot buffer. The length of the array must be equal to width*height.

Specified by:

setPixels in class ImageProcessor

getMin

public double getMin()

Returns the smallest displayed pixel value.

Specified by:

getMin in class ImageProcessor

getMax

public double getMax()

Returns the largest displayed pixel value.

Specified by:

getMax in class ImageProcessor

setMinAndMax

public void setMinAndMax(double min,
                         double max)

Maps the entries in this image's LUT from min-max to 0-255.

Specified by:

setMinAndMax in class ImageProcessor

resetMinAndMax

public void resetMinAndMax()

Resets this image's LUT.

Overrides:

resetMinAndMax in class ImageProcessor

copyBits

public void copyBits(ImageProcessor ip,
                     int xloc,
                     int yloc,
                     int mode)

Copies the image contained in 'ip' to (xloc, yloc) using one of the transfer modes defined in the Blitter interface.

Specified by:

copyBits in class ImageProcessor

applyTable

public void applyTable(int[] lut)

Description copied from class: ImageProcessor

Transforms the image or ROI using a lookup table. The length of the table must be 256 for byte images and 65536 for short images. RGB and float images are not supported.

Specified by:

applyTable in class ImageProcessor

convolve3x3

public void convolve3x3(int[] kernel)

3x3 convolution contributed by Glynne Casteel.

Specified by:

convolve3x3 in class ImageProcessor

filter

public void filter(int type)

Filters using a 3x3 neighborhood.

Specified by:

filter in class ImageProcessor

erode

public void erode()

Description copied from class: ImageProcessor

Erodes the image or ROI using a 3x3 maximum filter.

Specified by:

erode in class ImageProcessor

dilate

public void dilate()

Description copied from class: ImageProcessor

Dilates the image or ROI using a 3x3 minimum filter.

Specified by:

dilate in class ImageProcessor

outline

public void outline()

skeletonize

public void skeletonize()

medianFilter

public void medianFilter()

Description copied from class: ImageProcessor

A 3x3 median filter.

Specified by:

medianFilter in class ImageProcessor

noise

public void noise(double range)

Description copied from class: ImageProcessor

Adds random noise to the image or ROI.

Specified by:

noise in class ImageProcessor

Parameters:

range - the range of random numbers

scale

public void scale(double xScale,
                  double yScale)

Scales the image or selection using the specified scale factors.

Specified by:

scale in class ImageProcessor

See Also:

ImageProcessor.setInterpolate(boolean)

resize

public ImageProcessor resize(int dstWidth,
                             int dstHeight)

Creates a new ByteProcessor containing a scaled copy of this image or selection.

Specified by:

resize in class ImageProcessor

See Also:

ImageProcessor.setInterpolate(boolean)

rotate

public void rotate(double angle)

Rotates the image or ROI 'angle' degrees clockwise.

Specified by:

rotate in class ImageProcessor

See Also:

ImageProcessor.setInterpolate(boolean)

getHistogram

public int[] getHistogram()

Description copied from class: ImageProcessor

Returns the histogram of the image or ROI. Returns a luminosity histogram for RGB images and null for float images.

Specified by:

getHistogram in class ImageProcessor

getHistogram

public int[] getHistogram(int[] mask)

threshold

public void threshold(int level)

getAutoThreshold

public int getAutoThreshold()

Iterative thresholding technique, described originally by Ridler & Calvard in "PIcture Thresholding Using an Iterative Selection Method", IEEE transactions on Systems, Man and Cybernetics, August, 1978.

autoThreshold

public void autoThreshold()

Converts the image to binary using an automatically determined threshold.

Specified by:

autoThreshold in class ImageProcessor

applyLut

public void applyLut()