Lecture-3

Introduction to Perception:

Perception:

Perception is the preference of selection, organization, and interpretation of sensory input. It is the process of obtaining information about both the external and the internal environments, which results, via integration utilizing memory, in the conscious experience, recognition, and interpretation of objects, object relationships, and events Fig.33. The ability to perceive spatial relationships especially the distances between objects, in three dimensions fig.34.

Fig.33: Depth and its representation.

Fig.34: An object drawn with a thinner line is perceived as being further.

In the above objects you can see the use of thick and thin lines to create visual distances between the objects. Though objects are on the same plane the thick line gives the impression of being closer and the thin or faint line creates distances between objects. While perceiving visual perspective (near and far) sometimes it's very difficult to represent them visually in a simple manner. Therefore, trying this technique to reduce the difficulty of representing visual distances between objects.