com.jhlabs.image

Class WarpGrid

java.lang.Object

com.jhlabs.image.WarpGrid

public class WarpGrid
extends java.lang.Object

A warp grid. From "A simplified approach to Image Processing" by Randy Crane

Field Summary

Fields

Modifier and Type	Field and Description
int	cols
int	rows
float[]	xGrid
float[]	yGrid

Constructor Summary

Constructors

Constructor and Description
WarpGrid(int rows, int cols, int w, int h)

Method Summary

Modifier and Type	Method and Description
void	addCol(int before) Add a new column to the grid.
void	addRow(int before) Add a new row to the grid.
protected void	interpolateSpline(float[] xKnots, float[] yKnots, int offset, int length, float[] splineY, int splineOffset, int splineLength)
protected void	interpolateSpline2(float[] xKnots, float[] yKnots, int offset, float[] splineY, int splineOffset, int splineLength)
void	lerp(float t, WarpGrid destination, WarpGrid intermediate)
void	removeCol(int r) Remove a column from the grid.
void	removeRow(int r) Remove a row from the grid.
void	warp(int[] inPixels, int cols, int rows, WarpGrid sourceGrid, WarpGrid destGrid, int[] outPixels)

Methods inherited from class java.lang.Object

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

Field Detail

xGrid

public float[] xGrid

yGrid

public float[] yGrid

rows

public int rows

cols

public int cols

Constructor Detail

WarpGrid

public WarpGrid(int rows,
                int cols,
                int w,
                int h)

Method Detail

addRow

public void addRow(int before)

Add a new row to the grid. "before" must be in the range 1..rows-1. i.e. you can only add rows inside the grid.

Parameters:

before - The row before

addCol

public void addCol(int before)

Add a new column to the grid. "before" must be in the range 1..cols-1. i.e. you can only add columns inside the grid.

Parameters:

before - The column before.

removeRow

public void removeRow(int r)

Remove a row from the grid.

Parameters:

r - The row to remove.

removeCol

public void removeCol(int r)

Remove a column from the grid.

Parameters:

r - The column to remove.

lerp

public void lerp(float t,
                 WarpGrid destination,
                 WarpGrid intermediate)

warp

public void warp(int[] inPixels,
                 int cols,
                 int rows,
                 WarpGrid sourceGrid,
                 WarpGrid destGrid,
                 int[] outPixels)

interpolateSpline

protected void interpolateSpline(float[] xKnots,
                                 float[] yKnots,
                                 int offset,
                                 int length,
                                 float[] splineY,
                                 int splineOffset,
                                 int splineLength)

interpolateSpline2

protected void interpolateSpline2(float[] xKnots,
                                  float[] yKnots,
                                  int offset,
                                  float[] splineY,
                                  int splineOffset,
                                  int splineLength)