Constraints as an organizing principle of perception

Human visual perception is far from being an exact copy of reality. For the observer, it is much more important to dispose of relevant and immediately usable information. In fact, the accuracy allowing the safe interactions through the environment is sufficient. The perception always mirrors the life style, i.e., it is optimalized for managing the requirements of everyday situations. These requirements have gradually modified the human visual system in the course of evolution and also led to the forming of internal constraints (presuppositions)