Distort/undistort focal plane coordinates. More...

#include <LoMediumDistortionMap.h>

Inheritance diagram for Isis::LoMediumDistortionMap:

Collaboration diagram for Isis::LoMediumDistortionMap:

Public Member Functions
	LoMediumDistortionMap (Camera *parent)
	Constructor for LunarOrbiterMediumDistortionMap class.
void	SetDistortion (const int naifIkCode)
	Load LO Medium Resolution Camera perspective & distortion coefficients.
virtual bool	SetFocalPlane (const double dx, const double dy)
	Compute undistorted focal plane x/y for Lo Medium Resolution Camera.
virtual bool	SetUndistortedFocalPlane (const double ux, const double uy)
	Compute distorted focal plane x/y for Lo Medium 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

Private Attributes
double	p_sample0
	Center of distortion on sample axis.
double	p_line0
	Center of distortion on line axis.
std::vector< double >	p_coefs
	Distortion coeficients.
std::vector< double >	p_icoefs
	Distortion coeficients.

Detailed Description

Distort/undistort focal plane coordinates.

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

See Also: LoMediumCamera

Author: 2007-07-31 Debbie A. Cook

History:: 2007-07-31 Debbie A. Cook - Original version

History:: 2008-02-04 Jeff Anderson - Made change to support variable focal length in THEMIS IR camera

History:: 2008-07-25 Steven Lambright - Fixed constructor; CameraDistortionMap is responsible both for setting the p_camera protected member and calling Camera::SetDistortionMap. When the parent called Camera::SetDistortionMap the Camera took ownership of the instance of this object. By calling this twice, and with Camera only supporting having one distortion map, this object was deleted before the constructor was finished.

History:: 2009-05-22 Debbie A. Cook - Cleaned up code and added iteration loop. Previous version only iterated twice, but results indicated more iterations were needed for better accuracy.

History:: 2009-08-21 Debbie A. Cook - Added test for data outside focal plane limits plus 10% to avoid getting erroneous data projected on oblique images

History:: 2010-01-25 Debbie A. Cook - Increased out-of-bounds test to 17.5% of fiducial max to make sure lat/lons were defined to the image edges

History:: 2011-05-03 Jeannie Walldren - Updated documentation. Removed Lo namespace wrap.

History:: 2012-07-06 Debbie A. Cook - Updated Spice members to be more compliant with Isis coding standards. References #972.

History:: 2013-02-22 Debbie A. Cook - Updated SetUndistortedFocalPlane method to reflect correction made to LookCtoFocalPlaneXY in CameraGroundMap. The adjustment for the z direction occurs in CameraGroundMap and is no needed here. Fixes Mantis ticket #1524

Definition at line 73 of file LoMediumDistortionMap.h.

Constructor & Destructor Documentation

Isis::LoMediumDistortionMap::LoMediumDistortionMap ( Camera * parent )

Constructor for LunarOrbiterMediumDistortionMap class.

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

Parameters

parent A pointer to the parent camera object

History:: 2007-07-31 Debbie A. Cook Original version

Definition at line 47 of file LoMediumDistortionMap.cpp.

Member Function Documentation

double Isis::CameraDistortionMap::FocalPlaneX ( ) const

inlineinherited

Return distorted focal plane x.

Definition at line 72 of file CameraDistortionMap.h.

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

double Isis::CameraDistortionMap::FocalPlaneY ( ) const

inlineinherited

Return distorted focal plane y.

Definition at line 77 of file CameraDistortionMap.h.

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

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

inherited

Return optical distortion polynomial coefficients.

Definition at line 195 of file CameraDistortionMap.cpp.

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

Load LO Medium Resolution Camera perspective & distortion coefficients.

This method loads the distortion centers, and coefficients from the instrument kernel. * The distortion center coordinates (in mm) are expected to be in the form of:

INSxxxxxxx_DISTORTION_CENTER = ( xcenter, ycenter)
where xxxxxxx is the instrument code (always a negative number).

The center, (x0,y0), will be used to calculate the radius of distortion, r, in the equations below.

distX = x - x0 distY = y - y0, where (x,y) are the distorted focal plane coordinates. r^2 = (DistX^2 + DistY^2)/sref^2

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 above for the distortion center.

These coefficient will be used to convert from focal plane x,y to to undistorted x,y as follows:

dr/r = (k0 + k1*r^2 + k2*r^4)/sref ux = x - DistX*dr/r, similarly for uy

Parameters

naifIkCode Code to search for in instrument kernel

Reimplemented from Isis::CameraDistortionMap.

Definition at line 89 of file LoMediumDistortionMap.cpp.

References Isis::CameraFocalPlaneMap::DetectorLine(), Isis::CameraFocalPlaneMap::DetectorSample(), Isis::Camera::FocalPlaneMap(), p_line0, p_sample0, Isis::CameraFocalPlaneMap::SetFocalPlane(), and Isis::toString().

Referenced by Isis::LoMediumCamera::LoMediumCamera().

bool Isis::LoMediumDistortionMap::SetFocalPlane	(	const double	dx,
		const double	dy
	)

virtual

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

Compute undistorted focal plane x/y given a distorted focal plane x/y for the Lunar Orbiter Medium 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: Whether the conversion was successful

See Also: SetDistortion

Reimplemented from Isis::CameraDistortionMap.

Definition at line 117 of file LoMediumDistortionMap.cpp.

References Isis::CameraFocalPlaneMap::DetectorLine(), Isis::CameraFocalPlaneMap::DetectorSample(), Isis::Camera::FocalPlaneMap(), Isis::CameraFocalPlaneMap::FocalPlaneX(), Isis::CameraFocalPlaneMap::FocalPlaneY(), p_line0, p_sample0, Isis::CameraFocalPlaneMap::SetDetector(), and Isis::CameraFocalPlaneMap::SetFocalPlane().

bool Isis::LoMediumDistortionMap::SetUndistortedFocalPlane	(	const double	ux,
		const double	uy
	)

virtual

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

Compute distorted focal plane x/y given an undistorted focal plane x/y for the Lunar Orbiter Medium Resolution Camera. This method applies 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