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alegarda 12 years ago
parent cb61e91023
commit 62655b05f4
4 changed files with 45 additions and 46 deletions
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  1. 16
      modules/calib3d/doc/camera_calibration_and_3d_reconstruction.rst
  2. 4
      modules/calib3d/include/opencv2/calib3d/calib3d.hpp
  3. 63
      modules/calib3d/src/calibration.cpp
  4. 8
      modules/imgproc/src/undistort.cpp

16
modules/calib3d/doc/camera_calibration_and_3d_reconstruction.rst
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@ -157,9 +157,9 @@ Finds the camera intrinsic and extrinsic parameters from several views of a cali
* **CV_CALIB_RATIONAL_MODEL** Coefficients k4, k5, and k6 are enabled. To provide the backward compatibility, this extra flag should be explicitly specified to make the calibration function use the rational model and return 8 coefficients. If the flag is not set, the function computes and returns only 5 distortion coefficients.
* **CALIB_THIN_PRISM_MODEL** Coefficients s1, s2, s3 and s4 are enabled. To provide the backward compatibility, this extra flag should be explicitly specified to make the calibration function use the thin prism model and return 12 coefficients. If the flag is not set, the function computes and returns only 5 distortion coefficients.
* **CALIB_THIN_PRISM_MODEL** Coefficients s1, s2, s3 and s4 are enabled. To provide the backward compatibility, this extra flag should be explicitly specified to make the calibration function use the thin prism model and return 12 coefficients. If the flag is not set, the function computes and returns only 5 distortion coefficients.
* **CALIB_FIX_S1_S2_S3_S4** The thin prism distortion coefficienta are not changed during the optimization. If ``CV_CALIB_USE_INTRINSIC_GUESS`` is set, the coefficient from the supplied ``distCoeffs`` matrix is used. Otherwise, it is set to 0.
* **CALIB_FIX_S1_S2_S3_S4** The thin prism distortion coefficients are not changed during the optimization. If ``CV_CALIB_USE_INTRINSIC_GUESS`` is set, the coefficient from the supplied ``distCoeffs`` matrix is used. Otherwise, it is set to 0.
:param criteria: Termination criteria for the iterative optimization algorithm.
@ -572,7 +572,7 @@ Finds an object pose from 3D-2D point correspondences.
:param cameraMatrix: Input camera matrix :math:`A = \vecthreethree{fx}{0}{cx}{0}{fy}{cy}{0}{0}{1}` .
:param distCoeffs: Input vector of distortion coefficients :math:`(k_1, k_2, p_1, p_2[, k_3[, k_4, k_5, k_6]])` of 4, 5, or 8 elements. If the vector is NULL/empty, the zero distortion coefficients are assumed.
:param distCoeffs: Input vector of distortion coefficients :math:`(k_1, k_2, p_1, p_2[, k_3[, k_4, k_5, k_6],[s_1, s_2, s_3, s_4]])` of 4, 5, 8 or 12 elements. If the vector is NULL/empty, the zero distortion coefficients are assumed.
:param rvec: Output rotation vector (see :ocv:func:`Rodrigues` ) that, together with ``tvec`` , brings points from the model coordinate system to the camera coordinate system.
@ -604,7 +604,7 @@ Finds an object pose from 3D-2D point correspondences using the RANSAC scheme.
:param cameraMatrix: Input camera matrix :math:`A = \vecthreethree{fx}{0}{cx}{0}{fy}{cy}{0}{0}{1}` .
:param distCoeffs: Input vector of distortion coefficients :math:`(k_1, k_2, p_1, p_2[, k_3[, k_4, k_5, k_6]])` of 4, 5, or 8 elements. If the vector is NULL/empty, the zero distortion coefficients are assumed.
:param distCoeffs: Input vector of distortion coefficients :math:`(k_1, k_2, p_1, p_2[, k_3[, k_4, k_5, k_6],[s_1, s_2, s_3, s_4]])` of 4, 5, 8 or 12 elements. If the vector is NULL/empty, the zero distortion coefficients are assumed.
:param rvec: Output rotation vector (see :ocv:func:`Rodrigues` ) that, together with ``tvec`` , brings points from the model coordinate system to the camera coordinate system.
@ -950,7 +950,7 @@ Returns the new camera matrix based on the free scaling parameter.
:param cameraMatrix: Input camera matrix.
:param distCoeffs: Input vector of distortion coefficients :math:`(k_1, k_2, p_1, p_2[, k_3[, k_4, k_5, k_6]])` of 4, 5, or 8 elements. If the vector is NULL/empty, the zero distortion coefficients are assumed.
:param distCoeffs: Input vector of distortion coefficients :math:`(k_1, k_2, p_1, p_2[, k_3[, k_4, k_5, k_6],[s_1, s_2, s_3, s_4]])` of 4, 5, 8 or 12 elements. If the vector is NULL/empty, the zero distortion coefficients are assumed.
:param imageSize: Original image size.
@ -1376,7 +1376,7 @@ Calibrates the stereo camera.
:param cameraMatrix1: Input/output first camera matrix: :math:`\vecthreethree{f_x^{(j)}}{0}{c_x^{(j)}}{0}{f_y^{(j)}}{c_y^{(j)}}{0}{0}{1}` , :math:`j = 0,\, 1` . If any of ``CV_CALIB_USE_INTRINSIC_GUESS`` , ``CV_CALIB_FIX_ASPECT_RATIO`` , ``CV_CALIB_FIX_INTRINSIC`` , or ``CV_CALIB_FIX_FOCAL_LENGTH`` are specified, some or all of the matrix components must be initialized. See the flags description for details.
:param distCoeffs1: Input/output vector of distortion coefficients :math:`(k_1, k_2, p_1, p_2[, k_3[, k_4, k_5, k_6],[s_1, s_2, s_3, s_4]])` of 4, 5, or 8 elements. The output vector length depends on the flags.
:param distCoeffs1: Input/output vector of distortion coefficients :math:`(k_1, k_2, p_1, p_2[, k_3[, k_4, k_5, k_6],[s_1, s_2, s_3, s_4]])` of 4, 5, 8 ot 12 elements. The output vector length depends on the flags.
:param cameraMatrix2: Input/output second camera matrix. The parameter is similar to ``cameraMatrix1`` .
@ -1414,9 +1414,9 @@ Calibrates the stereo camera.
* **CV_CALIB_RATIONAL_MODEL** Enable coefficients k4, k5, and k6. To provide the backward compatibility, this extra flag should be explicitly specified to make the calibration function use the rational model and return 8 coefficients. If the flag is not set, the function computes and returns only 5 distortion coefficients.
* **CALIB_THIN_PRISM_MODEL** Coefficients s1, s2, s3 and s4 are enabled. To provide the backward compatibility, this extra flag should be explicitly specified to make the calibration function use the thin prism model and return 12 coefficients. If the flag is not set, the function computes and returns only 5 distortion coefficients.
* **CALIB_THIN_PRISM_MODEL** Coefficients s1, s2, s3 and s4 are enabled. To provide the backward compatibility, this extra flag should be explicitly specified to make the calibration function use the thin prism model and return 12 coefficients. If the flag is not set, the function computes and returns only 5 distortion coefficients.
* **CALIB_FIX_S1_S2_S3_S4** The thin prism distortion coefficienta are not changed during the optimization. If ``CV_CALIB_USE_INTRINSIC_GUESS`` is set, the coefficient from the supplied ``distCoeffs`` matrix is used. Otherwise, it is set to 0.
* **CALIB_FIX_S1_S2_S3_S4** The thin prism distortion coefficients are not changed during the optimization. If ``CV_CALIB_USE_INTRINSIC_GUESS`` is set, the coefficient from the supplied ``distCoeffs`` matrix is used. Otherwise, it is set to 0.
The function estimates transformation between two cameras making a stereo pair. If you have a stereo camera where the relative position and orientation of two cameras is fixed, and if you computed poses of an object relative to the first camera and to the second camera, (R1, T1) and (R2, T2), respectively (this can be done with
:ocv:func:`solvePnP` ), then those poses definitely relate to each other. This means that, given (

4
modules/calib3d/include/opencv2/calib3d/calib3d.hpp
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@ -537,8 +537,8 @@ enum
CALIB_FIX_K5 = CV_CALIB_FIX_K5,
CALIB_FIX_K6 = CV_CALIB_FIX_K6,
CALIB_RATIONAL_MODEL = CV_CALIB_RATIONAL_MODEL,
CALIB_THIN_PRISM_MODEL = CV_CALIB_THIN_PRISM_MODEL,
CALIB_FIX_S1_S2_S3_S4=CV_CALIB_FIX_S1_S2_S3_S4,
CALIB_THIN_PRISM_MODEL = CV_CALIB_THIN_PRISM_MODEL,
CALIB_FIX_S1_S2_S3_S4=CV_CALIB_FIX_S1_S2_S3_S4,
// only for stereo
CALIB_FIX_INTRINSIC = CV_CALIB_FIX_INTRINSIC,
CALIB_SAME_FOCAL_LENGTH = CV_CALIB_SAME_FOCAL_LENGTH,

63
modules/calib3d/src/calibration.cpp
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@ -1063,19 +1063,18 @@ CV_IMPL void cvProjectPoints2( const CvMat* objectPoints,
dpdk_p[dpdk_step+6] = fy*y*cdist*(-icdist2)*icdist2*r4;
dpdk_p[7] = fx*x*icdist2*cdist*(-icdist2)*icdist2*r6;
dpdk_p[dpdk_step+7] = fy*y*cdist*(-icdist2)*icdist2*r6;
}
if( _dpdk->cols > 8 )
{
dpdk_p[8] = fx*r2; //s1
dpdk_p[9] = fx*r4; //s2
dpdk_p[10] = 0;//s3
dpdk_p[11] = 0;//s4
dpdk_p[dpdk_step+8] = 0; //s1
dpdk_p[dpdk_step+9] = 0; //s2
dpdk_p[dpdk_step+10] = fy*r2; //s3
dpdk_p[dpdk_step+11] = fy*r4; //s4
}
if( _dpdk->cols > 8 )
{
dpdk_p[8] = fx*r2; //s1
dpdk_p[9] = fx*r4; //s2
dpdk_p[10] = 0;//s3
dpdk_p[11] = 0;//s4
dpdk_p[dpdk_step+8] = 0; //s1
dpdk_p[dpdk_step+9] = 0; //s2
dpdk_p[dpdk_step+10] = fy*r2; //s3
dpdk_p[dpdk_step+11] = fy*r4; //s4
}
}
}
}
dpdk_p += dpdk_step*2;
@ -1091,9 +1090,9 @@ CV_IMPL void cvProjectPoints2( const CvMat* objectPoints,
double dicdist2_dt = -icdist2*icdist2*(k[5]*dr2dt + 2*k[6]*r2*dr2dt + 3*k[7]*r4*dr2dt);
double da1dt = 2*(x*dydt[j] + y*dxdt[j]);
double dmxdt = fx*(dxdt[j]*cdist*icdist2 + x*dcdist_dt*icdist2 + x*cdist*dicdist2_dt +
k[2]*da1dt + k[3]*(dr2dt + 2*x*dxdt[j])+k[8]*dr2dt+2*r2*k[9]*dr2dt);
k[2]*da1dt + k[3]*(dr2dt + 2*x*dxdt[j]) + k[8]*dr2dt + 2*r2*k[9]*dr2dt);
double dmydt = fy*(dydt[j]*cdist*icdist2 + y*dcdist_dt*icdist2 + y*cdist*dicdist2_dt +
k[2]*(dr2dt + 2*y*dydt[j]) + k[3]*da1dt+k[10]*dr2dt+2*r2*k[11]*dr2dt);
k[2]*(dr2dt + 2*y*dydt[j]) + k[3]*da1dt + k[10]*dr2dt + 2*r2*k[11]*dr2dt);
dpdt_p[j] = dmxdt;
dpdt_p[dpdt_step+j] = dmydt;
}
@ -1129,9 +1128,9 @@ CV_IMPL void cvProjectPoints2( const CvMat* objectPoints,
double dicdist2_dr = -icdist2*icdist2*(k[5]*dr2dr + 2*k[6]*r2*dr2dr + 3*k[7]*r4*dr2dr);
double da1dr = 2*(x*dydr + y*dxdr);
double dmxdr = fx*(dxdr*cdist*icdist2 + x*dcdist_dr*icdist2 + x*cdist*dicdist2_dr +
k[2]*da1dr + k[3]*(dr2dr + 2*x*dxdr)+(k[8]*dr2dr+2*r2*k[9]*dr2dr));
k[2]*da1dr + k[3]*(dr2dr + 2*x*dxdr) + k[8]*dr2dr + 2*r2*k[9]*dr2dr);
double dmydr = fy*(dydr*cdist*icdist2 + y*dcdist_dr*icdist2 + y*cdist*dicdist2_dr +
k[2]*(dr2dr + 2*y*dydr) + k[3]*da1dr+(k[10]*dr2dr+2*r2*k[11]*dr2dr));
k[2]*(dr2dr + 2*y*dydr) + k[3]*da1dr + k[10]*dr2dr + 2*r2*k[11]*dr2dr);
dpdr_p[j] = dmxdr;
dpdr_p[dpdr_step+j] = dmydr;
}
@ -1493,9 +1492,9 @@ CV_IMPL double cvCalibrateCamera2( const CvMat* objectPoints,
(npoints->rows != 1 && npoints->cols != 1) )
CV_Error( CV_StsUnsupportedFormat,
"the array of point counters must be 1-dimensional integer vector" );
//when the thin prism model is used the distortion coefficients matrix must have 12 parameters
if((flags & CV_CALIB_THIN_PRISM_MODEL) && (distCoeffs->cols*distCoeffs->rows != 12))
CV_Error( CV_StsBadArg, "Thin prism model must have 12 parameters in the distortion matrix" );
//when the thin prism model is used the distortion coefficients matrix must have 12 parameters
if((flags & CV_CALIB_THIN_PRISM_MODEL) && (distCoeffs->cols*distCoeffs->rows != 12))
CV_Error( CV_StsBadArg, "Thin prism model must have 12 parameters in the distortion matrix" );
nimages = npoints->rows*npoints->cols;
npstep = npoints->rows == 1 ? 1 : npoints->step/CV_ELEM_SIZE(npoints->type);
@ -1630,7 +1629,7 @@ CV_IMPL double cvCalibrateCamera2( const CvMat* objectPoints,
param[0] = A[0]; param[1] = A[4]; param[2] = A[2]; param[3] = A[5];
param[4] = k[0]; param[5] = k[1]; param[6] = k[2]; param[7] = k[3];
param[8] = k[4]; param[9] = k[5]; param[10] = k[6]; param[11] = k[7];
param[12] = k[8]; param[13] = k[9]; param[14] = k[10]; param[15] = k[11];
param[12] = k[8]; param[13] = k[9]; param[14] = k[10]; param[15] = k[11];
if( flags & CV_CALIB_FIX_FOCAL_LENGTH )
mask[0] = mask[1] = 0;
@ -1655,16 +1654,16 @@ CV_IMPL double cvCalibrateCamera2( const CvMat* objectPoints,
mask[10] = 0;
if( flags & CV_CALIB_FIX_K6 )
mask[11] = 0;
if(!(flags & CV_CALIB_THIN_PRISM_MODEL))
flags |= CALIB_FIX_S1_S2_S3_S4;
if(!(flags & CV_CALIB_THIN_PRISM_MODEL))
flags |= CALIB_FIX_S1_S2_S3_S4;
if(flags & CALIB_FIX_S1_S2_S3_S4)
{
mask[12] = 0;
mask[13] = 0;
mask[14] = 0;
mask[15] = 0;
}
if(flags & CALIB_FIX_S1_S2_S3_S4)
{
mask[12] = 0;
mask[13] = 0;
mask[14] = 0;
mask[15] = 0;
}
}
// 2. initialize extrinsic parameters
@ -1700,7 +1699,7 @@ CV_IMPL double cvCalibrateCamera2( const CvMat* objectPoints,
A[0] = param[0]; A[4] = param[1]; A[2] = param[2]; A[5] = param[3];
k[0] = param[4]; k[1] = param[5]; k[2] = param[6]; k[3] = param[7];
k[4] = param[8]; k[5] = param[9]; k[6] = param[10]; k[7] = param[11];
k[8] = param[12];k[9] = param[13];k[10] = param[14];k[11] = param[15];
k[8] = param[12];k[9] = param[13];k[10] = param[14];k[11] = param[15];
if( !proceed )
break;
@ -1728,7 +1727,7 @@ CV_IMPL double cvCalibrateCamera2( const CvMat* objectPoints,
if( _JtJ || _JtErr )
{
cvProjectPoints2( &_Mi, &_ri, &_ti, &matA, &_k, &_mp, &_dpdr, &_dpdt,
cvProjectPoints2( &_Mi, &_ri, &_ti, &matA, &_k, &_mp, &_dpdr, &_dpdt,
(flags & CV_CALIB_FIX_FOCAL_LENGTH) ? 0 : &_dpdf,
(flags & CV_CALIB_FIX_PRINCIPAL_POINT) ? 0 : &_dpdc, &_dpdk,
(flags & CV_CALIB_FIX_ASPECT_RATIO) ? aspectRatio : 0);

8
modules/imgproc/src/undistort.cpp
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@ -122,10 +122,10 @@ void cv::initUndistortRectifyMap( InputArray _cameraMatrix, InputArray _distCoef
double k4 = distCoeffs.cols + distCoeffs.rows - 1 >= 8 ? ((double*)distCoeffs.data)[5] : 0.;
double k5 = distCoeffs.cols + distCoeffs.rows - 1 >= 8 ? ((double*)distCoeffs.data)[6] : 0.;
double k6 = distCoeffs.cols + distCoeffs.rows - 1 >= 8 ? ((double*)distCoeffs.data)[7] : 0.;
double s1 = distCoeffs.cols + distCoeffs.rows - 1 >= 12 ? ((double*)distCoeffs.data)[8] : 0.;
double s2 = distCoeffs.cols + distCoeffs.rows - 1 >= 12 ? ((double*)distCoeffs.data)[9] : 0.;
double s3 = distCoeffs.cols + distCoeffs.rows - 1 >= 12 ? ((double*)distCoeffs.data)[10] : 0.;
double s4 = distCoeffs.cols + distCoeffs.rows - 1 >= 12 ? ((double*)distCoeffs.data)[11] : 0.;
double s1 = distCoeffs.cols + distCoeffs.rows - 1 >= 12 ? ((double*)distCoeffs.data)[8] : 0.;
double s2 = distCoeffs.cols + distCoeffs.rows - 1 >= 12 ? ((double*)distCoeffs.data)[9] : 0.;
double s3 = distCoeffs.cols + distCoeffs.rows - 1 >= 12 ? ((double*)distCoeffs.data)[10] : 0.;
double s4 = distCoeffs.cols + distCoeffs.rows - 1 >= 12 ? ((double*)distCoeffs.data)[11] : 0.;
for( int i = 0; i < size.height; i++ )
{

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