3D-Viewer Export STL to many points on lines


I segmented an Image gray tone based and export a STL file with a thickness of one slice (also effectively a 2d Image) with the 3D-Viewer. If i look to the STL file I see the i have not points only at the edges of the geometry but also on all straight lines (see in the attachment the red box as example).

This is very bad for me cause of the meshing in the Simulation tool where i work with the STL file. Have anyone an idea how i can reduce the Points on the straight lines?

Best regards

One way could be to postprocess the *stl file in MeshLab to remove duplicated points, etc.:


Thanks for the info, but my hope was to solve the Problem in imagej.

I also found on the website a simplification process in this plugin: