ij.process
Class ShortProcessor

java.lang.Object
  ij.process.ImageProcessor
      ij.process.ShortProcessor

public class ShortProcessor
extends ImageProcessor

Objects of the class contain a 16-bit unsigned image and methods that operate on that image.

Field Summary

Fields inherited from class ij.process.ImageProcessor

antialiasedText, baseCM, BLACK, BLACK_AND_WHITE_LUT, bLUT1, bLUT2, boldFont, CENTER_JUSTIFY, clipXMax, clipXMin, clipYMax, clipYMin, cm, cTable, cx, cy, drawingColor, font, fontMetrics, gLUT1, gLUT2, height, histogramMax, histogramMin, histogramSize, img, interpolate, inversionTested, invertedLut, justification, LEFT_JUSTIFY, lineWidth, lutAnimation, lutUpdateMode, maxThreshold, minThreshold, newPixels, NO_LUT_UPDATE, NO_THRESHOLD, OVER_UNDER_LUT, RED_LUT, RIGHT_JUSTIFY, rLUT1, rLUT2, roiHeight, roiWidth, roiX, roiY, snapshotHeight, snapshotWidth, source, width, xMax, xMin, yMax, yMin

Constructor Summary

ShortProcessor(int width, int height)
Creates a blank ShortProcessor using the default grayscale LUT that displays zero as black.

ShortProcessor(int width, int height, boolean unsigned)
Obsolete.

ShortProcessor(int width, int height, short[] pixels, java.awt.image.ColorModel cm)
Creates a new ShortProcessor using the specified pixel array and ColorModel.

ShortProcessor(int width, int height, short[] pixels, java.awt.image.ColorModel cm, boolean unsigned)
Obsolete.

Method Summary

void	add(double value) Adds 'value' to each pixel in the image or ROI.
void	add(int value) Adds 'value' to each pixel in the image or ROI.
void	and(int value) Binary AND of each pixel in the image or ROI with 'value'.
void	applyTable(int[] lut) Transforms the pixel data using a 65536 entry lookup table.
void	convolve(float[] kernel, int kernelWidth, int kernelHeight) Performs a convolution operation using the specified kernel.
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() Create an 8-bit AWT image by scaling pixels in the range min-max to 0-255.
ImageProcessor	createProcessor(int width, int height) Returns a new, blank ShortProcessor with the specified width and height.
ImageProcessor	crop() Creates a new processor containing an image that corresponds to the current ROI.
void	dilate() Not implemented.
void	drawPixel(int x, int y) Draws a pixel in the current foreground color.
ImageProcessor	duplicate() Returns a duplicate of this image.
void	erode() Not implemented.
void	fill() Fills the current rectangular ROI.
void	fill(ImageProcessor mask) Fills pixels that are within roi and part of the mask.
void	filter(int type) Filters using a 3x3 neighborhood.
void	findMinAndMax()
void	flipVertical() Flips the image or ROI vertically.
void	gamma(double value) Performs gamma correction of the image or ROI.
int[]	getHistogram() Returns 65536 bin histogram of the current ROI, which can be non-rectangular.
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 short array containing this image's pixel data.
java.lang.Object	getPixelsCopy() Returns a reference to this image's snapshot (undo) array.
float	getPixelValue(int x, int y) Returns the value of the pixel at (x,y) as a float.
void	invert() Inverts the image or ROI.
void	log() Performs a log transform on the image or ROI.
void	max(double value) Pixels greater than 'value' are set to 'value'.
void	medianFilter() Not implemented.
void	min(double value) Pixels less than 'value' are set to 'value'.
void	multiply(double value) Multiplies each pixel in the image or ROI by 'value'.
void	noise(double range) Adds random noise to the image or ROI.
void	or(int value) Binary OR of each pixel in the image or ROI with 'value'.
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() Restores the pixel data from the snapshot (undo) buffer.
void	reset(ImageProcessor mask) Restore pixels that are within roi but not part of the mask.
void	resetMinAndMax() Recalculates the min and max values used to scale pixel values to 0-255 for display.
ImageProcessor	resize(int dstWidth, int dstHeight) Creates a new ShortProcessor 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	setBackgroundValue(double value) Does nothing.
void	setColor(java.awt.Color color) Sets the foreground fill/draw color.
void	setMinAndMax(double min, double max) Sets the min and max variables that control how real pixel values are mapped to 0-255 screen values.
void	setPixels(java.lang.Object pixels) Sets a new pixel array for the image and resets the snapshot buffer.
void	setThreshold(double minThreshold, double maxThreshold, int lutUpdate) Sets the lower and upper threshold levels.
void	setValue(double value) Sets the default fill/draw value, where 0<=value<=65535).
void	snapshot() Makes a copy of this image's pixel data.
void	sqr() Performs a square transform on the image or ROI.
void	sqrt() Performs a square root transform on the image or ROI.
void	threshold(int level) Sets pixels less than or equal to level to 0 and all other pixels to 255.
void	xor(int value) Binary exclusive OR of each pixel in the image or ROI with 'value'.

Methods inherited from class ij.process.ImageProcessor

autoThreshold, convertToByte, convertToFloat, convertToRGB, convertToShort, drawDot, drawDot2, drawLine, drawPolygon, drawRect, drawString, drawString, fillPolygon, findEdges, flipHorizontal, getAutoThreshold, getAutoThreshold, getBestIndex, getCalibrationTable, getColorModel, getColumn, getCurrentColorModel, getFontMetrics, getHeight, getHistogramMax, getHistogramMin, getHistogramSize, getInterpolate, getInterpolatedValue, getLine, getLutUpdateMode, getMask, getMaskArray, getMaxThreshold, getMinThreshold, getPixel, getRoi, getRow, getStringWidth, getWidth, hideProgress, insert, invertLut, isColorLut, isInvertedLut, isKillable, isPseudoColorLut, lineTo, makeDefaultColorModel, maskSizeError, moveTo, putColumn, putPixel, putRow, resetRoi, resetThreshold, rotateLeft, rotateRight, setAntialiasedText, setCalibrationTable, setClipRect, setColor, setColorModel, setFont, setHistogramRange, setHistogramSize, setInterpolate, setJustification, setLineWidth, setLutAnimation, setMask, setProgressBar, setRoi, setRoi, setRoi, setRoi, sharpen, showProgress, smooth, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ShortProcessor

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

Creates a new ShortProcessor using the specified pixel array and ColorModel. Set 'cm' to null to use the default grayscale LUT.

ShortProcessor

public ShortProcessor(int width,
                      int height)

Creates a blank ShortProcessor using the default grayscale LUT that displays zero as black. Call invertLut() to display zero as white.

ShortProcessor

public ShortProcessor(int width,
                      int height,
                      short[] pixels,
                      java.awt.image.ColorModel cm,
                      boolean unsigned)

Obsolete. 16 bit images are normally unsigned but signed images can be used by subtracting 32768 and using a calibration function to restore the original values.

ShortProcessor

public ShortProcessor(int width,
                      int height,
                      boolean unsigned)

Obsolete. 16 bit images are normally unsigned but signed images can be used by subtracting 32768 and using a calibration function to restore the original values.

Method Detail

findMinAndMax

public void findMinAndMax()

createImage

public java.awt.Image createImage()

Create an 8-bit AWT image by scaling pixels in the range min-max to 0-255.

Specified by:

createImage in class ImageProcessor

createProcessor

public ImageProcessor createProcessor(int width,
                                      int height)

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

Specified by:

createProcessor in class ImageProcessor

snapshot

public void snapshot()

Description copied from class: ImageProcessor

Makes a copy of this image's pixel data.

Specified by:

snapshot in class ImageProcessor

reset

public void reset()

Description copied from class: ImageProcessor

Restores the pixel data from the snapshot (undo) buffer.

Specified by:

reset in class ImageProcessor

reset

public void reset(ImageProcessor mask)

Description copied from class: ImageProcessor

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

Specified by:

reset 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)

Sets the min and max variables that control how real pixel values are mapped to 0-255 screen values.

Specified by:

setMinAndMax in class ImageProcessor

See Also:

resetMinAndMax(), ContrastAdjuster

resetMinAndMax

public void resetMinAndMax()

Recalculates the min and max values used to scale pixel values to 0-255 for display. This ensures that this ShortProcessor is set up to correctly display the image.

Overrides:

resetMinAndMax 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(). Returns zero if either the x or y coodinate is out of range.

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

putPixel

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

Stores the specified value at (x,y). Does nothing if (x,y) is outside the image boundary. Values outside the range 0-65535 are clipped.

Specified by:

putPixel in class ImageProcessor

putPixelValue

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

Stores the specified real value at (x,y). Does nothing if (x,y) is outside the image boundary. Values outside the range 0-65535 (-32768-32767 for signed images) are clipped. Support for signed values requires a calibration table, which is set up automatically with PlugInFilters.

Specified by:

putPixelValue 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

getPixelValue

public float getPixelValue(int x,
                           int y)

Returns the value of the pixel at (x,y) as a float. For signed images, returns a signed value if a calibration table has been set using setCalibraionTable() (this is done automatically in PlugInFilters).

Specified by:

getPixelValue in class ImageProcessor

getPixels

public java.lang.Object getPixels()

Returns a reference to the short 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]&0xffff).

Specified by:

getPixels in class ImageProcessor

getPixelsCopy

public java.lang.Object getPixelsCopy()

Returns a reference to this image's snapshot (undo) 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

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)

Transforms the pixel data using a 65536 entry lookup table.

Specified by:

applyTable in class ImageProcessor

invert

public void invert()

Description copied from class: ImageProcessor

Inverts the image or ROI.

Overrides:

invert in class ImageProcessor

add

public void add(int value)

Description copied from class: ImageProcessor

Adds 'value' to each pixel in the image or ROI.

Overrides:

add in class ImageProcessor

add

public void add(double value)

Description copied from class: ImageProcessor

Adds 'value' to each pixel in the image or ROI.

Overrides:

add in class ImageProcessor

multiply

public void multiply(double value)

Description copied from class: ImageProcessor

Multiplies each pixel in the image or ROI by 'value'.

Overrides:

multiply in class ImageProcessor

and

public void and(int value)

Description copied from class: ImageProcessor

Binary AND of each pixel in the image or ROI with 'value'.

Overrides:

and in class ImageProcessor

or

public void or(int value)

Description copied from class: ImageProcessor

Binary OR of each pixel in the image or ROI with 'value'.

Overrides:

or in class ImageProcessor

xor

public void xor(int value)

Description copied from class: ImageProcessor

Binary exclusive OR of each pixel in the image or ROI with 'value'.

Overrides:

xor in class ImageProcessor

gamma

public void gamma(double value)

Description copied from class: ImageProcessor

Performs gamma correction of the image or ROI.

Overrides:

gamma in class ImageProcessor

log

public void log()

Description copied from class: ImageProcessor

Performs a log transform on the image or ROI.

Overrides:

log in class ImageProcessor

sqr

public void sqr()

Description copied from class: ImageProcessor

Performs a square transform on the image or ROI.

Overrides:

sqr in class ImageProcessor

sqrt

public void sqrt()

Description copied from class: ImageProcessor

Performs a square root transform on the image or ROI.

Overrides:

sqrt in class ImageProcessor

min

public void min(double value)

Description copied from class: ImageProcessor

Pixels less than 'value' are set to 'value'.

Overrides:

min in class ImageProcessor

max

public void max(double value)

Description copied from class: ImageProcessor

Pixels greater than 'value' are set to 'value'.

Overrides:

max in class ImageProcessor

fill

public void fill()

Fills the current rectangular ROI.

Overrides:

fill in class ImageProcessor

fill

public void fill(ImageProcessor mask)

Fills pixels that are within roi and part of the mask. Throws an IllegalArgumentException if the mask is null or the size of the mask is not the same as the size of the ROI.

Specified by:

fill 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

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)

flipVertical

public void flipVertical()

Description copied from class: ImageProcessor

Flips the image or ROI vertically.

Specified by:

flipVertical in class ImageProcessor

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 ShortProcessor containing a scaled copy of this image or selection.

Specified by:

resize in class ImageProcessor

See Also:

ImageProcessor.setInterpolate(boolean)

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

duplicate

public ImageProcessor duplicate()

Returns a duplicate of this image.

Specified by:

duplicate in class ImageProcessor

setColor

public void setColor(java.awt.Color color)

Sets the foreground fill/draw color.

Specified by:

setColor in class ImageProcessor

setValue

public void setValue(double value)

Sets the default fill/draw value, where 0<=value<=65535).

Specified by:

setValue in class ImageProcessor

setBackgroundValue

public void setBackgroundValue(double value)

Does nothing. The rotate() and scale() methods always zero fill.

Specified by:

setBackgroundValue in class ImageProcessor

getHistogram

public int[] getHistogram()

Returns 65536 bin histogram of the current ROI, which can be non-rectangular.

Specified by:

getHistogram in class ImageProcessor

setThreshold

public void setThreshold(double minThreshold,
                         double maxThreshold,
                         int lutUpdate)

Description copied from class: ImageProcessor

Sets the lower and upper threshold levels. The 'lutUpdate' argument can be RED_LUT, BLACK_AND_WHITE_LUT, OVER_UNDER_LUT or NO_LUT_UPDATE. Thresholding of RGB images is not supported.

Overrides:

setThreshold in class ImageProcessor

convolve

public void convolve(float[] kernel,
                     int kernelWidth,
                     int kernelHeight)

Performs a convolution operation using the specified kernel.

Specified by:

convolve 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

threshold

public void threshold(int level)

Description copied from class: ImageProcessor

Sets pixels less than or equal to level to 0 and all other pixels to 255. Only works with 8-bit and 16-bit images.

Specified by:

threshold in class ImageProcessor

medianFilter

public void medianFilter()

Not implemented.

Specified by:

medianFilter in class ImageProcessor

erode

public void erode()

Not implemented.

Specified by:

erode in class ImageProcessor

dilate

public void dilate()

Not implemented.

Specified by:

dilate in class ImageProcessor