// Finds the 3D position of a point (in reference frame B) given the inputs TooN::Vector<3> MapMakerServerBase::ReprojectPoint(TooN::SE3<> se3AfromB, const TooN::Vector<3>& v3A, const TooN::Vector<3>& v3B) { // Algorithm from Hartley & Zisserman's Multiple View Geometry book section 12.2 TooN::Matrix<3, 4> PDash; PDash.slice<0, 0, 3, 3>() = se3AfromB.get_rotation().get_matrix(); PDash.slice<0, 3, 3, 1>() = se3AfromB.get_translation().as_col(); TooN::Matrix<4> A; A[0][0] = -v3B[2]; A[0][1] = 0.0; A[0][2] = v3B[0]; A[0][3] = 0.0; A[1][0] = 0.0; A[1][1] = -v3B[2]; A[1][2] = v3B[1]; A[1][3] = 0.0; A[2] = v3A[0] * PDash[2] - v3A[2] * PDash[0]; A[3] = v3A[1] * PDash[2] - v3A[2] * PDash[1]; TooN::SVD<4, 4> svd(A); TooN::Vector<4> v4Smallest = svd.get_VT()[3]; if (v4Smallest[3] == 0.0) v4Smallest[3] = 0.00001; return project(v4Smallest); }
void EstimationNode::publishTf(TooN::SE3<> trans, ros::Time stamp, int seq, std::string system) { trans = trans.inverse(); tf::Matrix3x3 m; m[0][0] = trans.get_rotation().get_matrix()(0,0); m[0][1] = trans.get_rotation().get_matrix()(0,1); m[0][2] = trans.get_rotation().get_matrix()(0,2); m[1][0] = trans.get_rotation().get_matrix()(1,0); m[1][1] = trans.get_rotation().get_matrix()(1,1); m[1][2] = trans.get_rotation().get_matrix()(1,2); m[2][0] = trans.get_rotation().get_matrix()(2,0); m[2][1] = trans.get_rotation().get_matrix()(2,1); m[2][2] = trans.get_rotation().get_matrix()(2,2); tf::Vector3 v; v[0] = trans.get_translation()[0]; v[1] = trans.get_translation()[1]; v[2] = trans.get_translation()[2]; tf::Transform tr = tf::Transform(m,v); tf::StampedTransform t = tf::StampedTransform(tr,stamp,"map",system); tf_broadcaster.sendTransform(t); if(logfilePTAMRaw != NULL) { pthread_mutex_lock(&(logPTAMRaw_CS)); // log: // - filterPosePrePTAM estimated for videoFrameTimestamp-delayVideo. // - PTAMResulttransformed estimated for videoFrameTimestamp-delayVideo. (using imu only for last step) // - predictedPoseSpeed estimated for lastNfoTimestamp+filter->delayControl (actually predicting) // - predictedPoseSpeedATLASTNFO estimated for lastNfoTimestamp (using imu only) if(logfilePTAMRaw != NULL) (*(logfilePTAMRaw)) << seq << " " << stamp << " " << tr.getOrigin().x() << " " << tr.getOrigin().y() << " " << tr.getOrigin().z() << " " << tr.getRotation().x() << " " << tr.getRotation().y() << " " << tr.getRotation().z() << " " << tr.getRotation().w() << std::endl; pthread_mutex_unlock(&(logPTAMRaw_CS)); } }
// Publish the current tracker pose void SystemFrontendBase::PublishPose() { ROS_ASSERT(mpTracker); if (mpTracker->GetTrackingQuality() == Tracker::NONE || mpTracker->IsLost()) return; geometry_msgs::PoseWithCovarianceStamped pose_cov_msg; pose_cov_msg.header.stamp = mpTracker->GetCurrentTimestamp(); pose_cov_msg.header.frame_id = "vision_world"; TooN::SE3<> pose = mpTracker->GetCurrentPose().inverse(); TooN::Matrix<3> rot = pose.get_rotation().get_matrix(); TooN::Matrix<6> cov = mpTracker->GetCurrentCovariance(); // clear cross correlation cov.slice<0, 3, 3, 3>() = TooN::Zeros; cov.slice<3, 0, 3, 3>() = TooN::Zeros; // Change covariance matrix frame from camera to world cov.slice<0, 0, 3, 3>() = rot * cov.slice<0, 0, 3, 3>() * rot.T(); cov.slice<3, 3, 3, 3>() = rot * cov.slice<3, 3, 3, 3>() * rot.T(); // Some hacky heuristics here if (mpTracker->GetTrackingQuality() == Tracker::GOOD) { cov = cov * 1e2; } else if (mpTracker->GetTrackingQuality() == Tracker::DODGY) { cov = cov * 1e5; } else if (mpTracker->GetTrackingQuality() == Tracker::BAD) { cov = cov * 1e8; } pose_cov_msg.pose.pose = util::SE3ToPoseMsg(pose); int numElems = 6; for (int i = 0; i < numElems; ++i) { for (int j = 0; j < numElems; ++j) { pose_cov_msg.pose.covariance[i * numElems + j] = cov(i, j); } } mPoseWithCovPub.publish(pose_cov_msg); static tf::TransformBroadcaster br; tf::Transform transform; tf::poseMsgToTF(pose_cov_msg.pose.pose, transform); br.sendTransform(tf::StampedTransform(transform, mpTracker->GetCurrentTimestamp(), "vision_world", "vision_pose")); SE3Map mPoses = mpTracker->GetCurrentCameraPoses(); geometry_msgs::PoseArray pose_array_msg; pose_array_msg.header.stamp = pose_cov_msg.header.stamp; pose_array_msg.header.frame_id = pose_cov_msg.header.frame_id; pose_array_msg.poses.resize(1 + mPoses.size()); pose_array_msg.poses[0] = pose_cov_msg.pose.pose; int i = 1; for (SE3Map::iterator it = mPoses.begin(); it != mPoses.end(); ++it, ++i) { pose_array_msg.poses[i] = util::SE3ToPoseMsg(it->second.inverse()); tf::poseMsgToTF(pose_array_msg.poses[i], transform); br.sendTransform(tf::StampedTransform(transform, mpTracker->GetCurrentTimestamp(), "vision_world", it->first)); } mPoseArrayPub.publish(pose_array_msg); }