Amal's blog

Friday 16 September 2011

A: Animation

The Definition of Animation :













  • "Animation" discovered from the Latin name anima,  the vital force inside every living creature.
  • A series of still drawings that, when viewed in rapid succession, gives the impression of a moving picture.
  • A simulation of movement to display a series of frames/pictures
  • The art of processing and preparing animated cartoons.
  • The rapid display of a sequence of images of 2-D or 3-D artwork or model positions in order to create an illusion of movement. 
  • Process of giving the illusion of movement to drawings, models, or inanimate objects.
  • The act of making something not alive to come alive.
  • To animate means to give life to inanimate (still) object, image or drawing.
  • The art of movement expressed with the images that are not taken directly from reality. 
  • A sequence of images can be displayed at rates fast enough to fool the eye into interpreting it as continuous imagery.
  • The Animation relies on the human eye's persistence of vision.

The human visual system is designed to notice and interpret movements. It is acknowledged that a series of images, when displayed in rapid sequence, are noticed by the observer as a single moving image.

The human Vision Persistence: 















There's a biological phenomenon known as persistence of vision and it's stating that any object seen by the human eye remains chemically mapped on the eye’s retina for a brief time after viewing that object.
Example: 
You can try this idea by staring out an object for half a a minute and then close your eyes. You will possibly see the image of the object due to persistence of vision.
When the eye observes something it detects the image on the retina at the back of the eye. Even when the object is removed it still show up in the mind's eye.

Phi Phenomenon:












Human’s mind need to conceptually complete the perceived action i.e. translating the action. Movies and animations depend on the 'phi' phenomenon, in which a series of still pictures are seen as showing genuine motion. The Phi phenomenon is a result of human instinct. Our brains strive to make meaning from what we perceive. When we see different images close together our brains quickly create a relationship between them.
Toys involving animated images began to appear at the beginning of the nineteenth century. This was the time when several scientists realized that a series of still images can be used to create the effect of a moving image, if the conditions are right.


There are two conditions: 
  • The first is that the images must be presented to the eye at the rate of at least 10 per second. 
  • The second condition is that a period of blackness must be set between each image, so that the images do not blur into each other, and the lines or gaps between them are not detected.
The reason that the viewer perceives a moving image, is that the brain forms a mental bridge between the two images, giving rise to the idea that the static images are actually moving. This is known as the 'phi phenomenon'.

Sources:

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