Facemorph
Class GridWarp2D

java.lang.Object
  Facemorph.GridWarp2D

public class GridWarp2D
extends java.lang.Object

Warps using a grid of fixed size using B-splines and an affine term

Constructor Summary

GridWarp2D(int gridWidth, int gridHeight, int width, int height)
Creates a new instance of GridWarp2D

Method Summary

java.awt.geom.Point2D.Double	get(double x, double y) Gets the interpolated value at the point specified
static void	main(java.lang.String[] args) Main method for testing
static java.awt.Color	sample(java.awt.image.BufferedImage img, float x, float y) Sample from a non-integer point in an image (as an int array) using linear interpolated sampling
void	setAffine(Vector3 ax, Vector3 ay) Sets the affine terms
void	setGridValue(int x, int y, double xval, double yval) Sets a specific grid value
double	spline(double x) Calculates the cubic B-spline on interval x=[0.0,4.0]
java.awt.image.BufferedImage	warpImage(java.awt.image.BufferedImage img) Warps the given image using this GridWarp2D

Methods inherited from class java.lang.Object

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

Constructor Detail

GridWarp2D

public GridWarp2D(int gridWidth,
                  int gridHeight,
                  int width,
                  int height)

Creates a new instance of GridWarp2D

Parameters:

gridWidth - the width of the grid

width - the width of the warped image

gridHeight - the height of the grid

height - the height of the grid to warp

Method Detail

setGridValue

public void setGridValue(int x,
                         int y,
                         double xval,
                         double yval)

Sets a specific grid value

Parameters:

x - the x-grid coord

y - the y-grid coord

xval - the new x-value of the warp

yval - the new y-value of the warp

setAffine

public void setAffine(Vector3 ax,
                      Vector3 ay)

Sets the affine terms

Parameters:

ax - the x affine term

ay - the y affine term

get

public java.awt.geom.Point2D.Double get(double x,
                                        double y)

Gets the interpolated value at the point specified

Parameters:

x - the x-coord

y - the y-coord

Returns:

returns the interpolated warped coordinate

spline

public double spline(double x)

Calculates the cubic B-spline on interval x=[0.0,4.0]

Parameters:

x - the position on the interval

Returns:

the value of the B-spline at that point

sample

public static java.awt.Color sample(java.awt.image.BufferedImage img,
                                    float x,
                                    float y)

Sample from a non-integer point in an image (as an int array) using linear interpolated sampling

Parameters:

img - The BufferedImage to sample from

x - The x-coord of the sample point

y - Te y-coord of the sample point

Returns:

The sampled colour

warpImage

public java.awt.image.BufferedImage warpImage(java.awt.image.BufferedImage img)

Warps the given image using this GridWarp2D

Parameters:

img - the image top warp

Returns:

the warped image

main

public static void main(java.lang.String[] args)

Main method for testing

Parameters:

args - command line arguments (not used)