jigl.image.utils
Class ImageGenerator

java.lang.Object
  |
  +--jigl.image.utils.ImageGenerator

public class ImageGenerator

extends Object

ImageGenerator is a class that builds various images. ImageGenerator supports command line options. All the methods are static.

ImageGenerator Command Lines
Type of image	Syntax	Comments
Uniform	-uniform <X> <Y> <color> <output file>	<X> width (integer value) <Y> height (integer value) <orientation> -h for horizonal, -v for vertical <std dev> standard deviation <frequency> frequency <color*> color (integer 0..255) <direction> -a for ascending, -d for descending <output file> File to output to <phase> phase in degrees <mean x> mean x value <mean y> mean y value
Ramp	-ramp <X> <Y> <orientation> <direction> <output file>
Gaussian	-gaussian <X> <Y> <mean x> <mean y> <std dev> <output file>
Sinusoidal	-sinusoid <X> <Y> <orientation> <frequency> <phase> <output file>
Stripes	-stripes <X> <Y> <color1> <color2> <orientation> <frequency> <output file>

Examples of possible Command-lines:

java ImageGenerator -uniform 250 300 45 D:\pictures\test1.pgm

java ImageGenerator -ramp 250 300 -h -a D:\pictures\test1.pgm

java ImageGenerator -gaussian 250 300 0 0 45 D:\pictures\test1.pgm

java ImageGenerator -sinusoid 250 300 -v 45 45 D:\pictures\test1.pgm

java ImageGenerator -stripes 250 300 0 255 -h 34 D:\pictures\test1.pgm

Field Summary

static int	ASCENDING Ascending Direction
static int	DESCENDING Descending Direction
static int	HORIZONTAL Horizonal Orientation
private static String[]	param Commandline parameters
private static double	PI Constant PI in Math
static int	VERTICAL Verticle Orientation

Constructor Summary

ImageGenerator()

Method Summary

static ComplexImage	buildGaussInFreqDomain(float sigma, int nx, int ny, int order_x, int order_y, boolean debug) Build a Gaussian image in frequency domain with standard deviation sigma, width nx and height ny.
static ComplexImage	buildLinearFilter(float sigma, int nx, int ny, int order_x, int order_y, boolean debug) Build a linear filter in frequency domain (Gaussian).
private static RealGrayImage	gaussian_parse()
static RealGrayImage	gaussian(int X, int Y, float x0, float y0, float std) Returns a RealGray gaussian image
static void	main(String[] argv) For commandline options.
static RealGrayImage	ngaussian(int X, int Y, float x0, float y0, float std) Build a Gaussian function in space domain with range[0.0 ..
private static RealGrayImage	ramp_parse() Returns a RealGray ramp image.
static RealGrayImage	ramp(int X, int Y, int orientation, int direction) Returns a RealGray ramp image
private static RealGrayImage	sinusoid_parse() Returns a RealGray sinusoidal image.
static RealGrayImage	sinusoid(int X, int Y, int orientation, float frequency, float phase) Returns a RealGray sinusoidal image
private static RealGrayImage	stripes_parse() Return a RealGray stripe image
static RealGrayImage	stripes(int X, int Y, float color1, float color2, int orientation, int frequency) Returns a RealGray stripe image
private static RealGrayImage	uniform_parse() Return a uniform RealGrayImage image.
static RealGrayImage	uniform(int X, int Y, float color) Returns a RealGray uniform image

Methods inherited from class java.lang.Object

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

Field Detail

VERTICAL

public static final int VERTICAL

Verticle Orientation

See Also:

Constant Field Values

HORIZONTAL

public static final int HORIZONTAL

Horizonal Orientation

See Also:

Constant Field Values

ASCENDING

public static final int ASCENDING

Ascending Direction

See Also:

Constant Field Values

DESCENDING

public static final int DESCENDING

Descending Direction

See Also:

Constant Field Values

param

private static String[] param

Commandline parameters

PI

private static double PI

Constant PI in Math

Constructor Detail

ImageGenerator

public ImageGenerator()

Method Detail

main

public static void main(String[] argv)

For commandline options. Images are saved in the following format:

                 GrayImage -> PGM file

                 RealGrayImage -> PRGM file

                 ColorImage -> PPM file

                 RealColorImage -> PRCM file

                 ComplexImage -> PPM file
         

Command lines are diffirent for different type of images generated.

uniform_parse

private static RealGrayImage uniform_parse()

Return a uniform RealGrayImage image.

uniform

public static RealGrayImage uniform(int X,
                                    int Y,
                                    float color)

Returns a RealGray uniform image

Parameters:

X - width of the image

Y - height of the image

color - the grayscale of the image

stripes_parse

private static RealGrayImage stripes_parse()
                                    throws InvalidCommandLineException

Return a RealGray stripe image

InvalidCommandLineException

stripes

public static RealGrayImage stripes(int X,
                                    int Y,
                                    float color1,
                                    float color2,
                                    int orientation,
                                    int frequency)

Returns a RealGray stripe image

Parameters:

X - width of the image

Y - height of the image

color1 - the first color

color2 - the second color

orientation - eithier horizonal or verticle

frequency - the frequency of the square wave

See Also:

VERTICAL, HORIZONTAL

ramp_parse

private static RealGrayImage ramp_parse()
                                 throws InvalidCommandLineException

Returns a RealGray ramp image.

InvalidCommandLineException

ramp

public static RealGrayImage ramp(int X,
                                 int Y,
                                 int orientation,
                                 int direction)

Returns a RealGray ramp image

Parameters:

X - width of the image

Y - height of the image

orientation - eithier verticle or horizonal

direction - eithier ascending or descending

See Also:

VERTICAL, HORIZONTAL, ASCENDING, DESCENDING

gaussian_parse

private static RealGrayImage gaussian_parse()

gaussian

public static RealGrayImage gaussian(int X,
                                     int Y,
                                     float x0,
                                     float y0,
                                     float std)

Returns a RealGray gaussian image

Parameters:

X - width of the image

Y - height of the image

x0 - x coordiant of the mean

y0 - y cooridant of the mean

std - standard deviation

buildGaussInFreqDomain

public static ComplexImage buildGaussInFreqDomain(float sigma,
                                                  int nx,
                                                  int ny,
                                                  int order_x,
                                                  int order_y,
                                                  boolean debug)

Build a Gaussian image in frequency domain with standard deviation sigma, width nx and height ny.

Parameters:

sigma - the standard deviation

nx - the width of the image

ny - the height of the image

buildLinearFilter

public static ComplexImage buildLinearFilter(float sigma,
                                             int nx,
                                             int ny,
                                             int order_x,
                                             int order_y,
                                             boolean debug)

Build a linear filter in frequency domain (Gaussian).

Parameters:

sigma - the standard deviation

nx - the width of the image

ny - the height of the image

ngaussian

public static RealGrayImage ngaussian(int X,
                                      int Y,
                                      float x0,
                                      float y0,
                                      float std)

Build a Gaussian function in space domain with range[0.0 .. 255.0]. When x0=X/2 and y0= Y/2, the Gaussian image is center-symmetric.

Parameters:

x0 - center position in x direction.

y0 - center position in y direction

sinusoid_parse

private static RealGrayImage sinusoid_parse()
                                     throws InvalidCommandLineException

Returns a RealGray sinusoidal image.

InvalidCommandLineException

sinusoid

public static RealGrayImage sinusoid(int X,
                                     int Y,
                                     int orientation,
                                     float frequency,
                                     float phase)

Returns a RealGray sinusoidal image

Parameters:

X - width of the image

Y - height of the image

orientation - eithier horizonal or verticle

frequency - the frequency of the wave

phase - the phase of the wave in degrees

See Also:

VERTICAL, HORIZONTAL