I have an aerial photograph of an area. The image includes visible traffic signs and vehicles. How can I remove the vehicles from the image? Is it possible to do so in software like Erdas or Envi using methods like Density Slicing? If possible, please tell me the procedure.
You should have started searching web first. Here you are a sufficient collection of techniques that have been used for fulfilling such tasks. Nothing can be advised more precisely because we don't know parameters of your imagery.
Edit: Don't know why my answer is so unwelcome. Recently I was concerned with vehicle detection myself and these scientific articles gave me some clue. One still have to detect vehicles before removing.