I am new to Blender and I am trying to map an image as a texture on top face of a mesh. I choose the view I am interested in (Top view) and use Project from view(bound). But I can also see the image on other sides of the shape, which is not desirable.

I cannot manually select the faces because the object is created by point cloud and consists of too many edges and faces.

Does anybody have any idea?

[![enter image description here][1]][1]


  [1]: https://i.sstatic.net/LZ9d1.png