3D rendering in OpenCV

Question

I am doing a project on 3D rendering of a scene. I am using OpenCV. The steps I am doing are like this:

1. Taking two images of a scene.
2. Calculating object

Answer 1

For the 3D part, you can render your scene with OpenGL or with PCL. You've two solutions:

• For each pixel, you make a point with the right color extracted from the camera's image. This will give you a point cloud which can be processed with PCL (for 3D features extraction for example).
• You apply a triangulation algorithm, but in order to apply this algorithm you must have the extrinsic matrices of your camera.

You can find more information about these techniques here:

• Point Cloud technique
• Triangulation algorithm

If you want to use OpenGL, you have to open a valid OpenGL context. I recommend you the SFML library or Qt. These libraries are very easy to use and have a good documentation. Both have tutorials about 3D rendering with OpenGL.