Package org.esa.snap.core.dataop.dem

Class Orthorectifier2

java.lang.Object

org.esa.snap.core.dataop.dem.Orthorectifier

org.esa.snap.core.dataop.dem.Orthorectifier2

All Implemented Interfaces:

GeoCoding

public class Orthorectifier2
extends Orthorectifier

An experimental modification of the standard Orthorectifier.

IMPORTANT NOTE: This class is not thread save. In order to use it safely, make sure to create a new instance of this class for each orthorectifying thread.

Version:

$Revision$ $Date$

Field Summary

Fields

Modifier and Type	Field	Description
static final float	DEGREE_EPS
static final float	DEGREE_EPS_SQR
static final double	RE

Fields inherited from class org.esa.snap.core.dataop.dem.Orthorectifier

PIXEL_EPS, PIXEL_EPS_SQR

Constructor Summary

Constructors

Constructor	Description
Orthorectifier2(int sceneRasterWidth, int sceneRasterHeight, Pointing pointing, ElevationModel elevationModel, int maxIterationCount)

Method Summary

Modifier and Type	Method	Description
PixelPos	getPixelPos(GeoPos geoPos, PixelPos pixelPos)	Returns the pixel co-ordinates as x,y for a given geographical position given as lat,lon.

Methods inherited from class org.esa.snap.core.dataop.dem.Orthorectifier

canClone, canGetGeoPos, canGetPixelPos, clone, dispose, equals, getDatum, getElevation, getElevationModel, getGeoCoding, getGeoCRS, getGeoPos, getImageCRS, getImageToMapTransform, getMapCRS, getMaxIterationCount, getPointing, hashCode, isCrossingMeridianAt180, isPixelPosValid

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Details

DEGREE_EPS

public static final float DEGREE_EPS

See Also:

• Constant Field Values

DEGREE_EPS_SQR

public static final float DEGREE_EPS_SQR

See Also:

• Constant Field Values

RE

public static final double RE

See Also:

• Constant Field Values

Constructor Details

Orthorectifier2

public Orthorectifier2(int sceneRasterWidth,
 int sceneRasterHeight,
 Pointing pointing,
 ElevationModel elevationModel,
 int maxIterationCount)

Method Details

getPixelPos

public PixelPos getPixelPos(GeoPos geoPos,
 PixelPos pixelPos)

Returns the pixel co-ordinates as x,y for a given geographical position given as lat,lon.

Implements the prediction/correction algorithm from the MERIS Geometry Handbook, VT-P194-DOC-001-E, iss 1, rev 4, page 29, figure 23.

Scope of the prediction/correction algorithm is to retrieve the pixel x,y that matches the given lat,lon by the direct location model f(x,y) = lat,lon.

Specified by:

getPixelPos in interface GeoCoding

Overrides:

getPixelPos in class Orthorectifier

Parameters:

geoPos - the geographical position as lat/lon.

pixelPos - an instance of Point to be used as retun value. If this parameter is null, the method creates a new instance which it then returns.

Returns:

the pixel co-ordinates as x/y