WlzShadeCorrect.c File Reference

Shade correction. More...

Functions
WlzObject *	WlzShadeCorrect (WlzObject *srcObj, WlzObject *shdObj, double nrmVal, int inPlace, WlzErrorNum *dstErr)
	Shade corrects the given domain object with grey values. \[ p_i = \frac{n o_i}{s_i} \] The shade corrected image P with values \(p_i\) is created by applying a correction factor to each image value of the given image O with values \(o_i\). More...
WlzObject *	WlzShadeCorrectBFDF (WlzObject *srcObj, WlzObject *shdObj, WlzObject *shdDFObj, double nrmVal, int inPlace, WlzErrorNum *dstErr)
	Shade corrects the given domain object with grey values. \[ p_i = n \frac{(o_i - d_i)}{(s_i - d_i} \] The shade corrected image P with values \(p_i\) is created by applying a correction factor to each image value of the given image O with values \(o_i\). \(s_i\) and \(d_i\) are the bright and dark-field shade image values respectively. More...

Detailed Description

Shade correction.

Author

Bill Hill

Date

January 2001

Version

Id

ed367f669cbaed69beb12a8f8c9167588cbaf407

Address: MRC Human Genetics Unit, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Edinburgh, EH4 2XU, UK.

Copyright (C), [2012], The University Court of the University of Edinburgh, Old College, Edinburgh, UK.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

Function Documentation

WlzShadeCorrect()

WlzObject* WlzShadeCorrect	(	WlzObject *	srcObj,
		WlzObject *	shdObj,
		double	nrmVal,
		int	inPlace,
		WlzErrorNum *	dstErr
	)

Shade corrects the given domain object with grey values.

\[ p_i = \frac{n o_i}{s_i} \]

The shade corrected image P with values \(p_i\) is created by applying a correction factor to each image value of the given image O with values \(o_i\).

Returns

Shade corrected object or NULL on error.

Parameters

srcObj	Given object to be shade corrected.
shdObj	Given bright field object.
nrmVal	Normalization value.
inPlace	Modify the grey values of the given object in place if non-zero.
dstErr	Destination error pointer, may be null.

References WlzShadeCorrectBFDF().

WlzShadeCorrectBFDF()

WlzObject* WlzShadeCorrectBFDF	(	WlzObject *	srcObj,
		WlzObject *	shdObj,
		WlzObject *	shdDFObj,
		double	nrmVal,
		int	inPlace,
		WlzErrorNum *	dstErr
	)

Shade corrects the given domain object with grey values.

\[ p_i = n \frac{(o_i - d_i)}{(s_i - d_i} \]

The shade corrected image P with values \(p_i\) is created by applying a correction factor to each image value of the given image O with values \(o_i\). \(s_i\) and \(d_i\) are the bright and dark-field shade image values respectively.

Returns

Shade corrected object or NULL on error.

Parameters

srcObj	Given object to be shade corrected.
shdObj	Given bright field object.
shdDFObj	Given dark field object (may be NULL).
nrmVal	Normalization value.
inPlace	Modify the grey values of the given object in place if non-zero.
dstErr	Destination error pointer, may be null.

References _WlzValues::core, _WlzDomain::core, _WlzObject::domain, _WlzObject::type, _WlzCoreValues::type, _WlzObject::values, WLZ_2D_DOMAINOBJ, WLZ_BO_SUBTRACT, WLZ_ERR_DOMAIN_NULL, WLZ_ERR_NONE, WLZ_ERR_OBJECT_NULL, WLZ_ERR_OBJECT_TYPE, WLZ_ERR_VALUES_NULL, WLZ_ERR_VALUES_TYPE, WLZ_GREY_RGBA, WlzGreyTableIsTiled(), WlzGreyTypeFromObj(), WlzImageArithmetic(), and WlzRGBAImageArithmetic().

Referenced by WlzShadeCorrect().