+++ /dev/null
-/*M///////////////////////////////////////////////////////////////////////////////////////
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-//
-// By downloading, copying, installing or using the software you agree to this license.
-// If you do not agree to this license, do not download, install,
-// copy or use the software.
-//
-//
-// Intel License Agreement
-// For Open Source Computer Vision Library
-//
-// Copyright (C) 2000, Intel Corporation, all rights reserved.
-// Third party copyrights are property of their respective owners.
-//
-// Redistribution and use in source and binary forms, with or without modification,
-// are permitted provided that the following conditions are met:
-//
-// * Redistribution's of source code must retain the above copyright notice,
-// this list of conditions and the following disclaimer.
-//
-// * Redistribution's in binary form must reproduce the above copyright notice,
-// this list of conditions and the following disclaimer in the documentation
-// and/or other materials provided with the distribution.
-//
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-// derived from this software without specific prior written permission.
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-// the use of this software, even if advised of the possibility of such damage.
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-//M*/
-
-#include "_cv.h"
-
-/****************************************************************************************\
-
- calculate image homography
-
-\****************************************************************************************/
-
-CV_IMPL void
-cvCalcImageHomography( float* line, CvPoint3D32f* _center,
- float* _intrinsic, float* _homography )
-{
- CV_FUNCNAME( "cvCalcImageHomography" );
-
- __BEGIN__;
-
- double norm_xy, norm_xz, xy_sina, xy_cosa, xz_sina, xz_cosa, nx1, plane_dist;
- float _ry[3], _rz[3], _r_trans[9];
- CvMat rx = cvMat( 1, 3, CV_32F, line );
- CvMat ry = cvMat( 1, 3, CV_32F, _ry );
- CvMat rz = cvMat( 1, 3, CV_32F, _rz );
- CvMat r_trans = cvMat( 3, 3, CV_32F, _r_trans );
- CvMat center = cvMat( 3, 1, CV_32F, _center );
-
- float _sub[9];
- CvMat sub = cvMat( 3, 3, CV_32F, _sub );
- float _t_trans[3];
- CvMat t_trans = cvMat( 3, 1, CV_32F, _t_trans );
-
- CvMat intrinsic = cvMat( 3, 3, CV_32F, _intrinsic );
- CvMat homography = cvMat( 3, 3, CV_32F, _homography );
-
- if( !line || !_center || !_intrinsic || !_homography )
- CV_ERROR( CV_StsNullPtr, "" );
-
- norm_xy = cvSqrt( line[0] * line[0] + line[1] * line[1] );
- xy_cosa = line[0] / norm_xy;
- xy_sina = line[1] / norm_xy;
-
- norm_xz = cvSqrt( line[0] * line[0] + line[2] * line[2] );
- xz_cosa = line[0] / norm_xz;
- xz_sina = line[2] / norm_xz;
-
- nx1 = -xz_sina;
-
- _rz[0] = (float)(xy_cosa * nx1);
- _rz[1] = (float)(xy_sina * nx1);
- _rz[2] = (float)xz_cosa;
- cvScale( &rz, &rz, 1./cvNorm(&rz,0,CV_L2) );
-
- /* new axe y */
- cvCrossProduct( &rz, &rx, &ry );
- cvScale( &ry, &ry, 1./cvNorm( &ry, 0, CV_L2 ) );
-
- /* transpone rotation matrix */
- memcpy( &_r_trans[0], line, 3*sizeof(float));
- memcpy( &_r_trans[3], _ry, 3*sizeof(float));
- memcpy( &_r_trans[6], _rz, 3*sizeof(float));
-
- /* calculate center distanse from arm plane */
- plane_dist = cvDotProduct( ¢er, &rz );
-
- /* calculate (I - r_trans)*center */
- cvSetIdentity( &sub );
- cvSub( &sub, &r_trans, &sub );
- cvMatMul( &sub, ¢er, &t_trans );
-
- cvMatMul( &t_trans, &rz, &sub );
- cvScaleAdd( &sub, cvRealScalar(1./plane_dist), &r_trans, &sub ); /* ? */
-
- cvMatMul( &intrinsic, &sub, &r_trans );
- cvInvert( &intrinsic, &sub, CV_SVD );
- cvMatMul( &r_trans, &sub, &homography );
-
- __END__;
-}
-
-/* End of file. */
-