What is monocular allusions?
Monocular allusion is a visual allusion for the perception of depth, which requires only one eye. People with a loss of vision in one eye can still rely on these stimuli for navigation around the world, although their in -depth perception will be disrupted. Some examples include movement parallax, interposition and linear perspective. Many of these stimuli can be seen in works of art, where artists rely on visual tricks to add depth and texture to visual scenes, so viewers feel as if they look at a three -dimensional environment. People rely on familiar data on the relative size of objects to be able to orient themselves; For example, a small car is interpreted as further and relies on what is known about the size of the car. Similarly, although the exact size or height of the object is not known, the surrounding objects can be used for general reference. Two trees of the same type and shape, but different sizes will be perceived at different distances, assuming that a larger tree is closer.
Linear perspective, tendencies of distant lines to converge closely, is an important monocular allusion for the perception of depth. The position of the objects can also be assessed with respect to these lines. An example is the obvious convergence of the train tracks on the horizon. Motion Parallax, the tendency of distant objects to move more slowly when people are moving, is another monocular stimuli that people use to determine the location of objects in the environment. A person on the train can see a distant mountain for a few minutes or hours, while the energy pole in seconds. This person knows that the mountain is further away.
Other monocular allusions include texture gradient, where textures seem more detailed and accurate when they are closer, along with an atmospheric perspective. Distant objects may seem unclear, pale or otherwise different due to atmospheric interruptions such as dust, and this visual distortion can provide traces of giving upLittle of objects. Inteposition is another monocular hint; The eyes assume that if the object overlaps another, the overlapping object is further away.
Every monocular allusion can help the brain interpret the image projected on the retina. Although the world is three -dimensional, it really sees the eyes in two dimensions and the brain relies on visual allusions to provide three -dimensional feedback. Other allusions to the perception of depth are binocular, which requires both eyes to repair the position of objects in the environment.