What is visual perception?

What Does visual perception Mean

The perception (of the Latin perceptio ) is to receive, through the senses, images, sounds, sensations or external impressions. It is a psychic function that allows the body to capture, elaborate and interpret the information that comes from the environment.

It is important to differentiate between the stimulus , which belongs to the outside world and generates the first effect in the chain of knowledge, and the perception, which is a psychological process and belongs to the inner world. It could be said that the stimulus is the physical, mechanical, thermal, chemical or electromagnetic energy that excites or activates a sensory receptor.

The visual perception is that inner sense of apparent knowledge resulting from a stimulus or light print recorded by eye . In general, this optical-physical act works in a similar way in all people, since the physiological differences of the visual organs hardly affect the result of perception.
The main differences arise with the interpretation of the information received, due to inequalities in culture, education, intelligence and age, for example. In this sense, the images can be "read" or interpreted as a literary text, so that in the operation of visual perception there is the possibility of learning to deepen the meaning of reading.
Gestalt psychologists , at the beginning of the 20th century , were the first to propose a philosophical theory of form. Max Wertheimer , Wolfgang Köhler , Kurt Koffka and Kurt Lewin , among others, assured that, in perception, the whole is greater than the sum of the parts .
Perception of the three dimensions
With the growing success of the umpteenth launch of entertainment in 3D (three dimensions ), new technologies have arrived that seek to make our brain believe that the objects and beings that we see on a screen are really there; For this, the cameras that are used have two lenses located at a distance such that they observe the world as our eyes do. The question is, how do they do it?

In principle, it is necessary to detail a series of concepts that represent those signs that the brain takes into account to understand what the eyes capture:
* overlap : when an object or individual is located in front of another, our mind immediately interprets that the first is closer to us than the second;
* Vanishing points or perspective : according to Leonardo Da Vinci's research, it refers to calculating the distances between the different things or beings that we perceive, or between them and us, based on our point of view and a series of measurements that we make at the unconscious level, such as the analysis of the decrease of objects the further away they are;
* objects whose size we know : similarly to the previous point, prior knowledge of the size of a thing or the dimensions of a living being allows us to understand how far it is from us;
* stereopsis : a term that comes from the Greek and that can be translated as vision or solid image , and that refers to a phenomenon by which our brain takes the image captured by each eye and unites them, creating a voluminous representation of our environment.
Based on these concepts, it can be deduced that depth perception depends mainly on a series of brain processes , on the analysis of the images captured by our eyes. In the case of 3D entertainment, much of the work detailed above is done by cameras and other devices; they offer us a "false" image, even more so than what is projected on a 2D screen, but ironically easier for our brain to understand.

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