Isis::LoHighDistortionMap Class Reference
[Spice, Instruments, and Cameras, Lunar Orbiter]

Distort/undistort focal plane coordinates. More...

#include <LoHighDistortionMap.h>

Public Member Functions
	LoHighDistortionMap (Camera *parent)
	Constructor for LunarOrbiterHighDistortionMap class.
void	SetDistortion (const int naifIkCode)
	Load LO High Resolution Camera perspective & distortion coefficients.
virtual bool	SetFocalPlane (const double dx, const double dy)
	Compute undistorted focal plane x/y for Lo High Resolution Camera.
virtual bool	SetUndistortedFocalPlane (const double ux, const double uy)
	Compute distorted focal plane x/y for Lo High Resolution Camera.
std::vector< double >	OpticalDistortionCoefficients () const
	Return optical distortion polynomial coefficients.
double	ZDirection () const
	Return the direction of the focal plane Z-axis.
double	FocalPlaneX () const
	Return distorted focal plane x.
double	FocalPlaneY () const
	Return distorted focal plane y.
double	UndistortedFocalPlaneX () const
	Return undistorted focal plane x.
double	UndistortedFocalPlaneY () const
	Return undistorted focal plane y.
double	UndistortedFocalPlaneZ () const
	Return undistorted focal plane z.
Protected Attributes
Camera *	p_camera
double	p_focalPlaneX
double	p_focalPlaneY
double	p_undistortedFocalPlaneX
double	p_undistortedFocalPlaneY
double	p_zDirection
std::vector< double >	p_odk

Detailed Description

Distort/undistort focal plane coordinates.

Creates a map for adding/removing optical distortions from the focal plane of the Lunar Orbiter high resolution camera.

See also:: LoHighCamera

Author:: 2007-06-29 Debbie A. Cook

Constructor & Destructor Documentation

Isis::LoHighDistortionMap::LoHighDistortionMap ( Camera * parent )

Constructor for LunarOrbiterHighDistortionMap class.

Define the distortion model coefficients for a Lunar Orbiter High Resolution camera.

Parameters:

parent

A pointer to the parent camera object

Member Function Documentation

double Isis::CameraDistortionMap::FocalPlaneX ( ) const [inline, inherited]

Return distorted focal plane x.

References Isis::CameraDistortionMap::p_focalPlaneX.

Referenced by Isis::ControlPoint::ComputeResiduals(), Isis::Camera::SetRightAscensionDeclination(), and Isis::LineScanCameraSkyMap::SetSky().

double Isis::CameraDistortionMap::FocalPlaneY ( ) const [inline, inherited]

Return distorted focal plane y.

References Isis::CameraDistortionMap::p_focalPlaneY.

Referenced by Isis::ControlPoint::ComputeResiduals(), Isis::Camera::SetRightAscensionDeclination(), and Isis::LineScanCameraSkyMap::SetSky().

std::vector< double > Isis::CameraDistortionMap::OpticalDistortionCoefficients ( ) const [inherited]

Return optical distortion polynomial coefficients.

References Isis::CameraDistortionMap::p_odk.

void Isis::LoHighDistortionMap::SetDistortion ( const int naifIkCode )

Load LO High Resolution Camera perspective & distortion coefficients.

This method loads the perspective correction factors, distortion centers, and coefficients from the instrument kernel. The perspective correction factors in the NAIF instrument kernel are expected to be in the form of:

 INSxxxxxxx_PERSPECTIVE_FACTORS = ( xpers, ypers)

 where xxxxxxx is the instrument code (always a negative number) and
 xpers and ypers are the X and Y perspective correction factors.

These factors will be used to convert from focal plane x,y to perspective-corrected x,y as follows.

pcx = FocalPlaneX * ( 1. + xpers*FocalPlaneX + ypers*FocalPlaneY); pcy = FocalPlaneY * ( 1. + xpers*FocalPlaneX + ypers*FocalPlaneY);

The distortion center coordinates (in mm) are expected to be in the form of:

 INSxxxxxxx_DISTORTION_CENTER = ( xcenter, ycenter)

 where xxxxxxx as is described above for the perspective factors.

The center will be used to calculate the radius of distortion in the equations below.

distX = PersCorrectedX - x0 distY = PersCorrectedY - y0

The distortion coefficients in the NAIF instrument kernel are expected to be in the form of:

 INSxxxxxxx_OD_K = ( coef1, coef2, ..., coefN)

 where xxxxxxx is as is described about for the perspective factors.

These coefficient will be used to convert from focal plane x,y to to undistorted x,y as follows (add equation here)

r^2 = DistX^2 + DistY^2 dr/r = k0 + k1*r^2 ux = PersCorrectedX - DistX*dr/r, similarly for uy

Parameters:

naifIkCode

Code to search for in instrument kernel

Reimplemented from Isis::CameraDistortionMap.

References Isis::CameraDistortionMap::p_camera, and Isis::toString().

Referenced by Isis::LoHighCamera::LoHighCamera().

bool Isis::LoHighDistortionMap::SetFocalPlane	(	const double	dx,
		const double	dy
	)			`[virtual]`

Compute undistorted focal plane x/y for Lo High Resolution Camera.

Compute undistorted focal plane x/y given a distorted focal plane x/y for the Lunar Orbiter High Resolution Camera. The polynomial used is described in the SetDistortion documentation. After calling this method, the undistorted x/y can be obtained via the UndistortedFocalPlaneX and UndistortedFocalPlaneY methods of the parent class.

Parameters:

	dx	distorted focal plane x in millimeters
	dy	distorted focal plane y in millimeters

Returns:: if the conversion was successful

See also:: SetDistortion

Reimplemented from Isis::CameraDistortionMap.

References Isis::E(), Isis::CameraDistortionMap::p_focalPlaneX, Isis::CameraDistortionMap::p_focalPlaneY, Isis::CameraDistortionMap::p_odk, Isis::CameraDistortionMap::p_undistortedFocalPlaneX, Isis::CameraDistortionMap::p_undistortedFocalPlaneY, and r2.

bool Isis::LoHighDistortionMap::SetUndistortedFocalPlane	(	const double	ux,
		const double	uy
	)			`[virtual]`

Compute distorted focal plane x/y for Lo High Resolution Camera.

Compute distorted focal plane x/y given an undistorted focal plane x/y for the Lunar Orbiter High Resolution Camera. This method applies both a perspective error and a distortion error based on a polynomial defined in the SetDistortion method. After calling this method the distorted x/y can be obtained via the FocalPlaneX and FocalPlaneY methods.

Parameters: