OpenCV Viz 3D虛擬空間模組_opencv

在OpenCV2.4.9發布release版本時添加了3D模組，實現起來非常簡潔漂亮，三維虛擬空間模組是整合自三維電腦圖形學、影像處理和可視化的VTK得到的，OpenCV3.0的OpenCV tutorial中常式效果如下：

首次配置Viz運行得到的效果：

原始碼如下：

#include <opencv2/viz/vizcore.hpp>#include <iostream>using namespace cv;using namespace std;/*** @function main*/int main(){    /// Create a window    viz::Viz3d myWindow("Viz Demo");    /// Start event loop    myWindow.spin();    /// Event loop is over when pressed q, Q, e, E    cout << "First event loop is over" << endl;    /// Access window via its name    viz::Viz3d sameWindow = viz::getWindowByName("Viz Demo");    /// Start event loop    sameWindow.spin();    /// Event loop is over when pressed q, Q, e, E    cout << "Second event loop is over" << endl;    /// Event loop is over when pressed q, Q, e, E    /// Start event loop once for 1 millisecond    sameWindow.spinOnce(1, true);    while(!sameWindow.wasStopped())    {        /// Interact with window        /// Event loop for 1 millisecond        sameWindow.spinOnce(1, true);    }    /// Once more event loop is stopped    cout << "Last event loop is over" << endl;    return 0;}

Windows 7下並非第一幅映像一般一片黑。其他類似常式如下：

原始碼如下：

#include <opencv2/viz.hpp>#include <opencv2/calib3d.hpp>#include <iostream>using namespace cv;using namespace std;int main(){/// Create a windowviz::Viz3d myWindow("Coordinate Frame");/// Add coordinate axesmyWindow.showWidget("Coordinate Widget", viz::WCoordinateSystem());/// Add line to represent (1,1,1) axisviz::WLine axis(Point3f(-1.0f, -1.0f, -1.0f), Point3f(1.0f, 1.0f, 1.0f));axis.setRenderingProperty(viz::LINE_WIDTH, 4.0);myWindow.showWidget("Line Widget", axis);/// Construct a cube widgetviz::WCube cube_widget(Point3f(0.5, 0.5, 0.0), Point3f(0.0, 0.0, -0.5), true, viz::Color::blue());cube_widget.setRenderingProperty(viz::LINE_WIDTH, 4.0);/// Display widget (update if already displayed)myWindow.showWidget("Cube Widget", cube_widget);/// Rodrigues vectorMat rot_vec = Mat::zeros(1, 3, CV_32F);float translation_phase = 0.0, translation = 0.0;while (!myWindow.wasStopped()){//* Rotation using rodrigues /// Rotate around (1,1,1)rot_vec.at<float>(0, 0) += CV_PI * 0.01f;rot_vec.at<float>(0, 1) += CV_PI * 0.01f;rot_vec.at<float>(0, 2) += CV_PI * 0.01f;/// Shift on (1,1,1)translation_phase += CV_PI * 0.01f;translation = sin(translation_phase);Mat rot_mat;Rodrigues(rot_vec, rot_mat);/// Construct poseAffine3f pose(rot_mat, Vec3f(translation, translation, translation));myWindow.setWidgetPose("Cube Widget", pose);myWindow.spinOnce(1, true);}return 0;}

You need to build VTK 6.1 (download) using CMake 2.8.x with shared libs turned off. VTK needs to be build as static library so it can be used to link to opencv with the VIZ module.

Build opencv with the viz module turned on using the src and build folders for vtk.