CODEWITHSUNDEEP
c++opencv3d
MichaelWatling
MichaelWatling

Reputation: 61

C++ OpenCV 3D Drawing

I have a vector of Point3d that varies in size. X and Y coordinates are always decided by image analysis, whereas Z is always between 0 and 10. Is there any way to show these points in a 3D space while only using OpenCV? I'm very new to graphical libraries and hope I do not have to get my head around another new library.

Upvotes: 4

Views: 5874

Answers (1)

Gopiraj
Gopiraj

Reputation: 657

You can use OpenCV Viz to visualize the 3d Points.

In order to visualize using viz, you need to build VTK first and then build OpenCV from source, WITH_VTK enabled.

Then you can visualize the 3D points as follows.

viz::Viz3d window; //creating a Viz window
//Displaying the Coordinate Origin (0,0,0)
window.showWidget("coordinate", viz::WCoordinateSystem(100));
//Displaying the 3D points in green
window.showWidget("points", viz::WCloud(pts3d, viz::Color::green()));
window.spin();

the input pts3D can be a vector<Point3d>, vector<Point3f>, vector<Point3i>, a Mat with 3 channels, Mat3f, Mat3d, Mat3i

Upvotes: 4

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