Find always culled GameObjects?

I'm at the stage were I try to optimize my scenes as best as I can.. And I'm just finished with the OC and something came to my mind, I couldn't find any in the Asset Store so I'll give it my best shot here.

Is there anyway to analyze the scene while the game is beeing played and find out what objects never beeing seen by the camera? These objects are useless and can be deleted from the scene, giving it a little more optimization..

 

Unity already does this by default
http://docs.unity3d.com/Manual/OcclusionCulling.html

 

I don't think you understood what I meant... Unity doesn't delete the gameobjects from the scene by default. I want something to analyze what objects are never seen by the camera and erase them completely from the scene

 

My apologies. If they are never seen in the scene - why are they in the scene to begin with?
Are scenes being randomly populated with filler assets?

Maybe if the culling information can be recorded that is a way to learn what isn't being rendered in the scene, but they will still have to be removed manually - I think.

 

if the objects arent seen by the camera due to the OC, then they wont be rendered. So there is not much to optimize by deleting them. But, A renderer has an isVisibile variable to check:
Renderer.isVisible
http://docs.unity3d.com/ScriptReference/Renderer-isVisible.html
However, this is not reliable if the object is required to cast shadows, because even if an object isnt "seen" by the camera at all, doesnt mean that it is never rendered. It may still be rendered for bounce lighting or shadowning purposes.
Personally, i would not worrry about doing what you are trying to do, because you could end up "breaking" something in your game, and it wouldnt be worth the effort to do this.