In 3D computer graphics
or 3D modeling or three-dimensional modeling is the process of developing
a mathematical representation of any surface of an object in three dimensions by
using special software. The object may be either living or inanimate. The
product is called models. Models may be created manually or automatically. The idea of 3d modeling is making the image, just like painting
that tricks the brain it is looking at something with 3D rather than 2D. One
can do this by considering the effects of lighting on the object, perspective, texture,
as well as depth and many more qualities, which the computer then has to project
on a 2D surface in a realistic way Graphics are visual presentations on a
surface, such as a computer screen. Examples are drawing, photograph, graphics
designs, engineering drawings, map or other images. Graphics often combine text
and illustration.
The
advance computer graphics started in the year of 1960 with IBM 2250, the first commercially
available graphics terminal hitting the market on 1965. After three years Ivan Sutherland
created the first computer controlled (HMD) head mounted display. This helmet
was able to see a computer in stereoscopic three dimensions, because separate image
were displayed for each eye. In computer modeling the most
popular primitive is the Triangle. In order to render a character on a screen,
the vertices making up the triangle are sent to the Graphics Processing Unit
also known as GPU. In the GPU, these vertices go through several coordinate
transformations testing.
Ivan then joined
what was then world’s leading research center for computer graphics at the university
of Utah .Edwin Catmull one of his student who conceived of texture mapping,
based on the fact that the majority of real life object have detailed surface
we can apply similar patterns to computer generated items by taking a flat 2
dimension image of an object’s surface and placing it onto 3 dimension computer
generated object. Using this technique he created the animated version of his
hand
The world’s first computer animation in movies in the Canadians short film
the hunger from 1974 an animated face as well as Catmull’s hand became the
first three dimension computer generated images
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