net.grelf.image
Class Image64

java.lang.Object
  net.grelf.image.ImageBase
      net.grelf.image.Image64

All Implemented Interfaces:

java.lang.Cloneable, Image

Direct Known Subclasses:

Accumulator64

public class Image64
extends ImageBase
implements Image, java.lang.Cloneable

This is used as an alternative to BufferedImage for holding 64-bits-per-channel (floating point) images, any number of channels. It needs a lot of memory of course: width x height x (12 + 8n) bytes for n-channel images.
Its behaviour differs from BufferedImages in that the maximum level available is not automatically increased to 2 to the power 32. A 16-bit BufferedImage would always be considered to have a maximum level of 65535 but the maximum level of an Image64 is the maximum level actually reached in the data (across all channels). The range of values held must be updated by every operation that modifies the data, so it is then available as getRangeDouble () without rescanning the image. A rescan can always be done, by getRangeDoubleByRescanning () or getChannelRangesDouble (), but that can be time consuming.

The data can be saved on disc and reloaded in FITS format.

Field Summary

protected double[][]

data

Fields inherited from class net.grelf.image.ImageBase

metadata

Constructor Summary

Image64(java.awt.image.BufferedImage bim)
Use the BufferedImage to set the width, height and number of bands (channels) in this Image.

Image64(int width, int height, int nBands)
Creates image without setting any pixels.

Image64(int width, int height, int nBands, boolean fillWithZeroes)
Creates image with pixels optionally set to zero.

Method Summary

void	add(java.awt.image.BufferedImage bim) Add pixel values from bim into the image data array.
void	add(double offset) Offset all pixel values by the given amount.
void	add(Image other) Add pixel values from another Image into the data array.
void	addProportion(Image other, double fractionThis, double fractionOther) Add proportion of pixel values from the other Image to a proportion of the current data array.
void	addTranslated(java.awt.image.BufferedImage bim, double dx, double dy) Add pixel values from bim into the image data array, offset by vector (dx, dy).
void	addTranslated(java.awt.image.BufferedImage bim, int dx, int dy) Add pixel values from bim into the image data array, offset by vector (dx, dy).
void	applyCurve(RangeInt currentRange, java.util.List<java.awt.Point> points, java.awt.image.BufferedImage bim) Apply a look-up curve to transform Image pixels into BufferedImage pixels.
void	applyCurveDouble(java.util.List<java.awt.Point> points) Apply a look-up curve to this Image64.
void	autoCrop() Automatically remove any rectangular margin of black (0, 0, 0) pixels from the image, thereby cropping it.
void	autoStretch(boolean allChannelsSame) Stretch the contrast in the image so the full range of levels is used.
void	autoStretch(boolean allChannelsSame, java.awt.Point topLeft, java.awt.Point bottomRight) Stretch the contrast in the image so the full range of levels is used.
ByteMask	autoThreshold() Threshold automatically.
void	averageVertically() Replace every pixel of every vertical line in the image by the average of the levels along the line.
void	averageVertically(int yMin, int yMax) Replace every pixel of every vertical line in the image by the average of the levels along the line, within two y coordinate limits.
void	blurGaussian(int nx, int ny, javax.swing.ProgressMonitor monitor) Do Gaussian blurring of this image with 1D profiles of width nx (horizontal) and ny (vertical).
protected void	checkCompatibility(java.lang.String opName, java.awt.image.BufferedImage bim)
Image	clone() Returns a new Image64 object with the same data, or null if there is not enough memory for it.
Image16	convertToImage16()
Image32	convertToImage32() Scale linearly to create an Image32.
Image64	convertToImage64() Simply returns this (not a clone).
Image8	convertToImage8()
void	convertToMonochrome() Reduce the number of bands from 3 to 1, converting RGB to monochrome, using 0.325 x red + 0.5 * green + 0.175 * blue.
void	convertToMonochrome(double... f) Reduce the number of bands to 1, combining channels, using sum_i (f[i]/I x px[i]), where I = sum_i (f[i]).
void	convolve(double[] horz, double[] vert, javax.swing.ProgressMonitor monitor) Convolve the given image with the given 1D arrays (horizontal and vertical - may be different).
void	convolve(Kernel kernel, javax.swing.ProgressMonitor monitor) Perform a 2D linear convolution with the given kernel.
void	correctBackground(double scale, int cellFactor) Level the background of the image by dividing the image into n x n cells and using the modal values of the histogram in every cell.
void	crop(java.awt.Point pt1, java.awt.Point pt2) Crop the image by a rectangle defined by the diagonally opposite points.
void	deconvolve(Kernel kernel, int nPasses, double weight, javax.swing.ProgressMonitor monitor) Deconvolve this image with the given kernel, using van Cittert's method.
void	dispose() Release all resources.
void	divide(int n) Divide all pixel values (in all bands) in the image by n.
void	divideByFlatField(Image flat) Divide by a flat field image.
void	drawRim(int width, java.awt.Color colour) Draw a rim around the image, of the given width and colour
void	fit(int width, int height) Scale the image so it fits into the given width and height (in pixels), without changing its proportions.
void	flipHorizontal() Flip the image horizontally.
void	flipVertical() Flip the image vertically.
int	getBitsPerChannel() Get the number of bits per channel; currently always returns 64.
RangeInt[]	getChannelRanges() Find the range of values in each channel, as pairs of int values - NB: MAY OVERFLOW.
RangeDouble[]	getChannelRangesDouble() Find the range of values in each channel, as pairs of double values.
int	getHeight() Get the height, in pixels, of the image.
double[]	getHorizontalSamplesDouble(int x0, int y, int band, int n)
java.lang.String	getImageTypeAsString() For displaying image information, get its java.awt.image.BufferedImage type constant name.
int	getNBands() Get the number of bands (channels) in the image.
int[]	getPixel(int x, int y) Get array of int pixel values for all bands at the given integer (x, y) position.
double[]	getPixelDouble(int x, int y) Get array of double pixel values for all bands at the given integer (x, y) position.
double[]	getPixelDoubleInterpolated(double x, double y) Get array of double pixel values for all bands at the given fractional (x, y) position.
int[]	getPixelInterpolated(double x, double y) Get array of int pixel values for all bands at the given fractional (x, y) position.
RangeInt	getRange() Get the minimum and maximum values occurring, across all channels.
RangeInt	getRangeByRescanning() Get overall range of values across all channels, as a pair of int values - NB: MAY OVERFLOW.
RangeDouble	getRangeByRescanningDouble() Get overall range of values across all channels, as a pair of double values
RangeDouble	getRangeDouble() Get the minimum and maximum values occurring, across all channels.
double[]	getVerticalSamplesDouble(int x, int y0, int band, int n)
int	getWidth() Get the width, in pixels, of the image.
Image	gnomonicProjection(int focalLength_mm, double detectorWidth_mm, double detectorHeight_mm) Project from sphere to plane.
Image	inverseGnomonicProjection(int focalLength_mm, double detectorWidth_mm, double detectorHeight_mm) Project from plane to sphere.
void	invert() Invert the colour at every pixel in the image.
boolean	isRaw() Whether the image data are still in RAW format, as from a DSLR camera.
void	meanFilter(int halfWidth, javax.swing.ProgressMonitor monitor) Replace every pixel in the image by the mean value of its n x n neighbourhood, where n = 2.halfWidth + 1.
void	medianFilter(int halfWidth, javax.swing.ProgressMonitor monitor) Replace every pixel in the image by the median value of its n x n neighbourhood, where n = 2.halfWidth + 1.
void	multiply(double f) Multiply all pixel values (in all bands) in the image by factor f, truncating the result if pixels contain integer values.
void	multiply(Image other) Multiply pixel values of current image by those of another.
void	multiply(Image other, double f1, double f2) Multiply fraction f1 of this image by f2 of the other.
void	nearestExtremeFilter(int halfWidth, javax.swing.ProgressMonitor monitor) Replace every pixel in the image by the nearest of the max and min of its n x n neighbourhood, where n = 2.halfWidth + 1.
void	neutraliseBackground() Equate the histogram modes of all channels by stretching from the overall maximum value.
void	rankFilter(int halfWidth, javax.swing.ProgressMonitor monitor) Replace every pixel in the image by its rank in its n x n neighbourhood, where n = 2.halfWidth + 1.
void	reapplyColour(Image intensityAcc, Image colourAcc) For combining a monochrome intensity image with a multi-band colour information image, the 2 images having been created by ImProcess.splitIntensity ().
void	rotate(double angleDegs) Rotate the image anticlockwise by the given angle (in degrees).
void	save(java.lang.String filePath) Save on disc: 64-bit images can only be saved as FITS, so saveAsFITS() is called directly.
void	save(java.lang.String filePath, RangeDouble range) Save on disc: 64-bit images can only be saved as FITS, so saveAsFITS() is called directly.
void	save(java.lang.String filePath, RangeInt range) Save on disc: 64-bit images can only be saved as FITS, so saveAsFITS() is called directly.
void	saveAsFITS(java.lang.String filePath) Saves as a 64-bit floating point FITS file with BZERO = 0.0 and BSCALE = 1.0.
void	scale(double factor, boolean interpolating) Scale the image in x and y by the given factor
java.awt.image.BufferedImage	scaleDownForDisplay(int factor) Create a BufferedImage compatible with the display and scale the current Image down into it by an integer factor (maximum speed).
void	set(java.awt.image.BufferedImage bim) Set pixel values from bim into the image data array.
void	setPixel(int x, int y, int[] px) Does nothing if (x, y) is outside the image.
void	setPixel(int x, int y, int band, int px) Set value into a single band of a pixel without changing the other bands.
void	setPixelDouble(int x, int y, double[] px) Does nothing if (x, y) is outside the image.
void	setPixelDouble(int x, int y, int band, double px) Set value into a single band of a pixel without changing the other bands.
protected void	setRangeDouble(RangeDouble range)
void	showInfo() Display information about the current image in a dialogue.
Image[]	splitChannels() Convert image to any array of monochrome images.
void	subtract(Image other) Subtract pixel values of other image from this image data array, raising result by minimum possible so it is always positive.
void	subtractToZero(Image other) Subtract pixel values of other image from this image data array, clipping negative results to zero.
ByteMask	threshold(Threshold thresh) Threshold the image to detect pixels in the range(s) specified by the given threshold.
java.lang.String	toFoldedString(java.lang.String lineEnd) Return complete metadata in a form suitable for display.
java.lang.String	toString() Get a simple description : width x height x channels
void	translate(double dx, double dy) Displace the image content by the given offset vector, interpolating between pixels.
void	translate(int dx, int dy) Displace the image content by the given offset vector.
void	varianceFilter(int halfWidth, javax.swing.ProgressMonitor monitor) Replace every pixel in the image by the variance of its n x n neighbourhood, where n = 2.halfWidth + 1.

Methods inherited from class net.grelf.image.ImageBase

createImage, createImage, getCalibration, getFilePath, getGraphicsConfiguration, getMetadata, recombine, sameBitsAndBands, sameSizeBitsAndBands, setCalibration, setFilePath, setMetadata, showInfo

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.grelf.image.Image

getCalibration, getFilePath, getMetadata, setCalibration, setFilePath, setMetadata

Field Detail

data

protected double[][] data

Constructor Detail

Image64

public Image64(int width,
               int height,
               int nBands)

Creates image without setting any pixels.

Image64

public Image64(int width,
               int height,
               int nBands,
               boolean fillWithZeroes)

Creates image with pixels optionally set to zero.

Image64

public Image64(java.awt.image.BufferedImage bim)
        throws IncompatibleImageException

Use the BufferedImage to set the width, height and number of bands (channels) in this Image. Populate the pixel values in the image data array from the BufferedImage also.

Throws:

IncompatibleImageException

Method Detail

getBitsPerChannel

public int getBitsPerChannel()

Get the number of bits per channel; currently always returns 64.

Specified by:

getBitsPerChannel in interface Image

getWidth

public int getWidth()

Get the width, in pixels, of the image.

Specified by:

getWidth in interface Image

getHeight

public int getHeight()

Get the height, in pixels, of the image.

Specified by:

getHeight in interface Image

getImageTypeAsString

public java.lang.String getImageTypeAsString()

For displaying image information, get its java.awt.image.BufferedImage type constant name.

Specified by:

getImageTypeAsString in interface Image

getNBands

public int getNBands()

Get the number of bands (channels) in the image.

Specified by:

getNBands in interface Image

getRange

public RangeInt getRange()

Get the minimum and maximum values occurring, across all channels. May not make sense due to casting to int.

Specified by:

getRange in interface Image

getRangeDouble

public RangeDouble getRangeDouble()

Get the minimum and maximum values occurring, across all channels.

Specified by:

getRangeDouble in interface Image

setRangeDouble

protected void setRangeDouble(RangeDouble range)

checkCompatibility

protected void checkCompatibility(java.lang.String opName,
                                  java.awt.image.BufferedImage bim)
                           throws IncompatibleImageException

Throws:

IncompatibleImageException

add

public void add(double offset)

Offset all pixel values by the given amount. This will be necessary before obtaining a histogram if the range is found to have a negative low value.

addProportion

public void addProportion(Image other,
                          double fractionThis,
                          double fractionOther)
                   throws IncompatibleImageException

Add proportion of pixel values from the other Image to a proportion of the current data array. If other is larger than the data then the rectangle starting at the top left corner of other which overlaps the data will be used.

Specified by:

addProportion in interface Image

Throws:

IncompatibleImageException

add

public void add(Image other)
         throws IncompatibleImageException

Add pixel values from another Image into the data array. If the other Image is larger than this one then the rectangle starting at the top left corner which overlaps will be used.

Specified by:

add in interface Image

Throws:

IncompatibleImageException

add

public void add(java.awt.image.BufferedImage bim)
         throws IncompatibleImageException

Add pixel values from bim into the image data array. If bim is larger than this Image then the rectangle starting at the top left corner of bim which overlaps the Image will be used.

Specified by:

add in interface Image

Throws:

IncompatibleImageException

addTranslated

public void addTranslated(java.awt.image.BufferedImage bim,
                          int dx,
                          int dy)
                   throws IncompatibleImageException

Add pixel values from bim into the image data array, offset by vector (dx, dy). Only those pixels of the offset bim which overlap this Image are used. Using integer coordinates, this version is fast but does not interpolate from the source image.
10.10.22: Major bug fixed.

Specified by:

addTranslated in interface Image

Throws:

IncompatibleImageException

addTranslated

public void addTranslated(java.awt.image.BufferedImage bim,
                          double dx,
                          double dy)
                   throws IncompatibleImageException

Add pixel values from bim into the image data array, offset by vector (dx, dy). Only those pixels of the offset bim which overlap this Image are used. Using double coordinates, this version is slower but does interpolate from the source image.
10.10.22: Major bug fixed.

Specified by:

addTranslated in interface Image

Throws:

IncompatibleImageException

applyCurve

public void applyCurve(RangeInt currentRange,
                       java.util.List<java.awt.Point> points,
                       java.awt.image.BufferedImage bim)
                throws IncompatibleImageException

Apply a look-up curve to transform Image pixels into BufferedImage pixels. The curve is a set of points with x and y ranges of 0..255 but the Image (x-axis) has 32-bit range and the target BufferedImage (y-axis) may have any number of bits per channel. The Image and BufefredImage must have the same number of channels, otherwise an IncompatibleImageException is thrown.

Specified by:

applyCurve in interface Image

Throws:

IncompatibleImageException

applyCurveDouble

public void applyCurveDouble(java.util.List<java.awt.Point> points)

Apply a look-up curve to this Image64. The curve is a set of points with x and y ranges of 0..255 but the image axes have much wider ranges.

autoCrop

public void autoCrop()

Automatically remove any rectangular margin of black (0, 0, 0) pixels from the image, thereby cropping it. Potentially replaces the data array inside this Image by a new smaller one.

Specified by:

autoCrop in interface Image

autoStretch

public void autoStretch(boolean allChannelsSame)

Stretch the contrast in the image so the full range of levels is used.

Specified by:

autoStretch in interface Image

autoStretch

public void autoStretch(boolean allChannelsSame,
                        java.awt.Point topLeft,
                        java.awt.Point bottomRight)

Stretch the contrast in the image so the full range of levels is used. This version only changes pixels in the rectangle defined by the two points as diagonal. The upper level of the data will not change but if the lower level was not zero a linear rescaling will make it so.

Specified by:

autoStretch in interface Image

autoThreshold

public ByteMask autoThreshold()

Threshold automatically. First gets a histogram and finds the channel means. Sets the threshold for each channel: if the mean is lower than half-way up the brightness range the background is assumed to be dark so the threshold goes from half-way up to the top. Otherwise the background is assumed to be bright so the threshold goes from 0 to half-way. Then does the thresholding to set a mask in the GlassPane, suitable for blob detection.
Not for segmenting stars: use StarSegmenter class instead.

Specified by:

autoThreshold in interface Image

averageVertically

public void averageVertically()

Replace every pixel of every vertical line in the image by the average of the levels along the line. This is for analysing profiles (particularly for spectroscopy). Rotate and crop the image appropriately before using this.

Specified by:

averageVertically in interface Image

averageVertically

public void averageVertically(int yMin,
                              int yMax)

Replace every pixel of every vertical line in the image by the average of the levels along the line, within two y coordinate limits. This is for analysing profiles (particularly for spectroscopy). Rotate and crop the image appropriately before using this.

Specified by:

averageVertically in interface Image

blurGaussian

public void blurGaussian(int nx,
                         int ny,
                         javax.swing.ProgressMonitor monitor)

Do Gaussian blurring of this image with 1D profiles of width nx (horizontal) and ny (vertical).

Specified by:

blurGaussian in interface Image

clone

public Image clone()

Returns a new Image64 object with the same data, or null if there is not enough memory for it.

Specified by:

clone in interface Image

Overrides:

clone in class java.lang.Object

convertToImage8

public Image8 convertToImage8()

Specified by:

convertToImage8 in interface Image

convertToImage16

public Image16 convertToImage16()

Specified by:

convertToImage16 in interface Image

convertToImage32

public Image32 convertToImage32()

Scale linearly to create an Image32.

Specified by:

convertToImage32 in interface Image

convertToImage64

public Image64 convertToImage64()

Simply returns this (not a clone).

Specified by:

convertToImage64 in interface Image

convertToMonochrome

public void convertToMonochrome()

Reduce the number of bands from 3 to 1, converting RGB to monochrome, using 0.325 x red + 0.5 * green + 0.175 * blue. Replaces the data array inside this image by a new smaller one.

Specified by:

convertToMonochrome in interface Image

convertToMonochrome

public void convertToMonochrome(double... f)

Reduce the number of bands to 1, combining channels, using sum_i (f[i]/I x px[i]), where I = sum_i (f[i]). Replaces the data array inside this image by a new smaller one.

Specified by:

convertToMonochrome in interface Image

convolve

public void convolve(Kernel kernel,
                     javax.swing.ProgressMonitor monitor)

Perform a 2D linear convolution with the given kernel. The monitor may be null.

Specified by:

convolve in interface Image

convolve

public void convolve(double[] horz,
                     double[] vert,
                     javax.swing.ProgressMonitor monitor)

Convolve the given image with the given 1D arrays (horizontal and vertical - may be different). All channels are convolved the same. If either array is null the convolution in that direction is skipped. This method is intended as a quicker way of doing certain useful convolutions, such as Gaussian blurring. The monitor may be null.

Specified by:

convolve in interface Image

correctBackground

public void correctBackground(double scale,
                              int cellFactor)

Level the background of the image by dividing the image into n x n cells and using the modal values of the histogram in every cell. n (cellFactor) is set in the Config.

Specified by:

correctBackground in interface Image

crop

public void crop(java.awt.Point pt1,
                 java.awt.Point pt2)

Crop the image by a rectangle defined by the diagonally opposite points. Does not assume pt1 is above or to the left of pt2. Replaces the data array inside this image by a new smaller one.

Specified by:

crop in interface Image

deconvolve

public void deconvolve(Kernel kernel,
                       int nPasses,
                       double weight,
                       javax.swing.ProgressMonitor monitor)

Deconvolve this image with the given kernel, using van Cittert's method. The monitor may be null.

Specified by:

deconvolve in interface Image

dispose

public void dispose()

Description copied from interface: Image

Release all resources.

Specified by:

dispose in interface Image

divide

public void divide(int n)

Divide all pixel values (in all bands) in the image by n.

Specified by:

divide in interface Image

divideByFlatField

public void divideByFlatField(Image flat)

Divide by a flat field image.

Specified by:

divideByFlatField in interface Image

drawRim

public void drawRim(int width,
                    java.awt.Color colour)

Draw a rim around the image, of the given width and colour

Specified by:

drawRim in interface Image

fit

public void fit(int width,
                int height)

Scale the image so it fits into the given width and height (in pixels), without changing its proportions. Replaces the data array inside this image by a new smaller one.

Specified by:

fit in interface Image

flipHorizontal

public void flipHorizontal()

Flip the image horizontally.

Specified by:

flipHorizontal in interface Image

flipVertical

public void flipVertical()

Flip the image vertically.

Specified by:

flipVertical in interface Image

getChannelRanges

public RangeInt[] getChannelRanges()

Find the range of values in each channel, as pairs of int values - NB: MAY OVERFLOW.

Specified by:

getChannelRanges in interface Image

getChannelRangesDouble

public RangeDouble[] getChannelRangesDouble()

Find the range of values in each channel, as pairs of double values.

Specified by:

getChannelRangesDouble in interface Image

getRangeByRescanning

public RangeInt getRangeByRescanning()

Get overall range of values across all channels, as a pair of int values - NB: MAY OVERFLOW.

Specified by:

getRangeByRescanning in interface Image

getRangeByRescanningDouble

public RangeDouble getRangeByRescanningDouble()

Get overall range of values across all channels, as a pair of double values

Specified by:

getRangeByRescanningDouble in interface Image

getPixel

public int[] getPixel(int x,
                      int y)

Get array of int pixel values for all bands at the given integer (x, y) position. Returns all zeroes if the position is outside the image. NB: MAY OVERFLOW.

Specified by:

getPixel in interface Image

getPixelDouble

public double[] getPixelDouble(int x,
                               int y)

Get array of double pixel values for all bands at the given integer (x, y) position. Returns all zeroes if the position is outside the image.

Specified by:

getPixelDouble in interface Image

getPixelInterpolated

public int[] getPixelInterpolated(double x,
                                  double y)

Get array of int pixel values for all bands at the given fractional (x, y) position. Returns all zeroes if the position is outside the image. NB: MAY OVERFLOW.

Specified by:

getPixelInterpolated in interface Image

getPixelDoubleInterpolated

public double[] getPixelDoubleInterpolated(double x,
                                           double y)

Get array of double pixel values for all bands at the given fractional (x, y) position. Returns all zeroes if the position is outside the image.

Specified by:

getPixelDoubleInterpolated in interface Image

getHorizontalSamplesDouble

public double[] getHorizontalSamplesDouble(int x0,
                                           int y,
                                           int band,
                                           int n)

getVerticalSamplesDouble

public double[] getVerticalSamplesDouble(int x,
                                         int y0,
                                         int band,
                                         int n)

gnomonicProjection

public Image gnomonicProjection(int focalLength_mm,
                                double detectorWidth_mm,
                                double detectorHeight_mm)

Project from sphere to plane.

Specified by:

gnomonicProjection in interface Image

inverseGnomonicProjection

public Image inverseGnomonicProjection(int focalLength_mm,
                                       double detectorWidth_mm,
                                       double detectorHeight_mm)

Project from plane to sphere.

Specified by:

inverseGnomonicProjection in interface Image

invert

public void invert()

Invert the colour at every pixel in the image.

Specified by:

invert in interface Image

isRaw

public boolean isRaw()

Description copied from interface: Image

Whether the image data are still in RAW format, as from a DSLR camera. Only an Image16 is likely to return true for this.

Specified by:

isRaw in interface Image

meanFilter

public void meanFilter(int halfWidth,
                       javax.swing.ProgressMonitor monitor)

Replace every pixel in the image by the mean value of its n x n neighbourhood, where n = 2.halfWidth + 1.

Specified by:

meanFilter in interface Image

medianFilter

public void medianFilter(int halfWidth,
                         javax.swing.ProgressMonitor monitor)

Replace every pixel in the image by the median value of its n x n neighbourhood, where n = 2.halfWidth + 1.

Specified by:

medianFilter in interface Image

multiply

public void multiply(double f)

Multiply all pixel values (in all bands) in the image by factor f, truncating the result if pixels contain integer values.

Specified by:

multiply in interface Image

multiply

public void multiply(Image other)

Description copied from interface: Image

Multiply pixel values of current image by those of another. May well saturate but will not overflow to negative values.

Specified by:

multiply in interface Image

multiply

public void multiply(Image other,
                     double f1,
                     double f2)

Multiply fraction f1 of this image by f2 of the other.

Specified by:

multiply in interface Image

nearestExtremeFilter

public void nearestExtremeFilter(int halfWidth,
                                 javax.swing.ProgressMonitor monitor)

Replace every pixel in the image by the nearest of the max and min of its n x n neighbourhood, where n = 2.halfWidth + 1.

Specified by:

nearestExtremeFilter in interface Image

neutraliseBackground

public void neutraliseBackground()

Description copied from interface: Image

Equate the histogram modes of all channels by stretching from the overall maximum value.

Specified by:

neutraliseBackground in interface Image

rankFilter

public void rankFilter(int halfWidth,
                       javax.swing.ProgressMonitor monitor)

Replace every pixel in the image by its rank in its n x n neighbourhood, where n = 2.halfWidth + 1. The rank is scaled up so that its possible values span the grey level range of the image. Each channel is treated independently.

Specified by:

rankFilter in interface Image

reapplyColour

public void reapplyColour(Image intensityAcc,
                          Image colourAcc)

For combining a monochrome intensity image with a multi-band colour information image, the 2 images having been created by ImProcess.splitIntensity (). The result fills the current image, overwriting any previous contents. This enables GRIP to implement the colour preservation scheme described at http://www.allthesky.com/articles/colorpreserve.html

Specified by:

reapplyColour in interface Image

rotate

public void rotate(double angleDegs)

Rotate the image anticlockwise by the given angle (in degrees).

Specified by:

rotate in interface Image

save

public void save(java.lang.String filePath)

Save on disc: 64-bit images can only be saved as FITS, so saveAsFITS() is called directly.

Specified by:

save in interface Image

save

public void save(java.lang.String filePath,
                 RangeInt range)

Save on disc: 64-bit images can only be saved as FITS, so saveAsFITS() is called directly. The range parameter is ignored.

Specified by:

save in interface Image

save

public void save(java.lang.String filePath,
                 RangeDouble range)

Save on disc: 64-bit images can only be saved as FITS, so saveAsFITS() is called directly. The range parameter is ignored.

Specified by:

save in interface Image

saveAsFITS

public void saveAsFITS(java.lang.String filePath)

Saves as a 64-bit floating point FITS file with BZERO = 0.0 and BSCALE = 1.0.

Specified by:

saveAsFITS in interface Image

scale

public void scale(double factor,
                  boolean interpolating)

Scale the image in x and y by the given factor

Specified by:

scale in interface Image

scaleDownForDisplay

public java.awt.image.BufferedImage scaleDownForDisplay(int factor)

Create a BufferedImage compatible with the display and scale the current Image down into it by an integer factor (maximum speed).

Specified by:

scaleDownForDisplay in interface Image

set

public final void set(java.awt.image.BufferedImage bim)
               throws IncompatibleImageException

Set pixel values from bim into the image data array. If bim is larger than the image then the rectangle starting at the top left corner of bim which overlaps the image will be used.

Specified by:

set in interface Image

Throws:

IncompatibleImageException

setPixel

public void setPixel(int x,
                     int y,
                     int[] px)

Does nothing if (x, y) is outside the image.

Specified by:

setPixel in interface Image

setPixel

public void setPixel(int x,
                     int y,
                     int band,
                     int px)

Set value into a single band of a pixel without changing the other bands. Does nothing if (x, y) is outside the image.

Specified by:

setPixel in interface Image

setPixelDouble

public void setPixelDouble(int x,
                           int y,
                           double[] px)

Does nothing if (x, y) is outside the image.

Specified by:

setPixelDouble in interface Image

setPixelDouble

public void setPixelDouble(int x,
                           int y,
                           int band,
                           double px)

Set value into a single band of a pixel without changing the other bands. Does nothing if (x, y) is outside the image.

Specified by:

setPixelDouble in interface Image

showInfo

public void showInfo()

Display information about the current image in a dialogue.

Specified by:

showInfo in interface Image

splitChannels

public Image[] splitChannels()

Convert image to any array of monochrome images. 11.10.23: ImFrame parameter removed and return type added, to reduce dependencies.

Specified by:

splitChannels in interface Image

subtract

public void subtract(Image other)
              throws IncompatibleImageException

Subtract pixel values of other image from this image data array, raising result by minimum possible so it is always positive. If other is larger than this image then the rectangle starting at the top left corner of other which overlaps this image will be used.

Specified by:

subtract in interface Image

Throws:

IncompatibleImageException

subtractToZero

public void subtractToZero(Image other)
                    throws IncompatibleImageException

Subtract pixel values of other image from this image data array, clipping negative results to zero. If other is larger than this image then the rectangle starting at the top left corner of other which overlaps this image will be used.

Specified by:

subtractToZero in interface Image

Throws:

IncompatibleImageException

threshold

public ByteMask threshold(Threshold thresh)

Threshold the image to detect pixels in the range(s) specified by the given threshold. Return a binary mask (values BlobMask.MASK_CLEAR or BlobMask.MASK_SET), suitable for setting into GlassPane. The image may have any number of bands.

Specified by:

threshold in interface Image

toString

public java.lang.String toString()

Get a simple description : width x height x channels

Specified by:

toString in interface Image

Overrides:

toString in class java.lang.Object

toFoldedString

public java.lang.String toFoldedString(java.lang.String lineEnd)

Description copied from interface: Image

Return complete metadata in a form suitable for display. The lineEnd might be "\n" or "
", depending on the intended output medium.

Specified by:

toFoldedString in interface Image

translate

public void translate(int dx,
                      int dy)

Displace the image content by the given offset vector. Image size is unchanged. Margins exposed by the shift are filled with zeroes. Portions of the image shifted off the edge are lost. Shifting an image by a very small amount and then subtracting it from itself (eg, as previously cloned from the image menu) is a way of detecting edges in the direction of the offset.

Specified by:

translate in interface Image

translate

public void translate(double dx,
                      double dy)

Displace the image content by the given offset vector, interpolating between pixels. Image size is unchanged. Margins exposed by the shift are filled with zeroes. Portions of the image shifted off the edge are lost. Shifting an image by a very small amount and then subtracting it from itself (eg, as previously cloned) is a way of detecting edges in the direction of the offset.

Specified by:

translate in interface Image

varianceFilter

public void varianceFilter(int halfWidth,
                           javax.swing.ProgressMonitor monitor)

Replace every pixel in the image by the variance of its n x n neighbourhood, where n = 2.halfWidth + 1.

Specified by:

varianceFilter in interface Image