 He addressed that why the image of city can be formed 

, and he even suggested ways of computing the image of the city, or more precisely the kind of collective image of the city, using increasingly available geographic information such as Flickr and Twitter


Mental maps have been used in a collection of spatial research.Many studies have been performed that focus on the quality of an environment in terms of feelings such as fear, desire and stress.A study by Matei et al.