-REAL TIME GRAPHICS AND RENDERING:

Introduction
Computer graphics goes to the very early ages of the 1960s the time when computer technology gaining force t stand onto its feet. Actually this topic deals with graphics, the first program which ever utilized a complete graphical user interface. For the computer animation festival features a section focused entirely on real time computer graphics.

Definitions of some basic terms in the field:
In this field of real time rendering, there are some terms which we have to be familiar with.
ü Raster images: Raster images also known as Bitmap is a way of representing digital images. These are the images which can change/loose its quality when zoomed.
ü Vector images: these are the images that are created using the mathematical algorithms and geometric function to draw a picture. This image defines points and the paths that connect them to form a digital representation of image.
ü Computer Graphics: Computer graphics refers to any picture or series of pictures that is generated with the aid of computer.
ü Modeling: The process of creating any image alike as the actual thing. Model is the image created which look like the actual thing.
ü Texturing: The process of building a surface detail and indicating how that surface will to light. All surfaces can be described by their color, shining ness etc.
ü Animation: Is the rapid display of a sequence of images of 2-D or 3-D artwork.
However, there are some steps to follow in order to make computer graphics designing like pre-designing, modeling, texturing, animation and rendering.

What is real time graphics?
Real time graphics refers to computer graphics that signifies reality and rendering is the final process of creating the actual 2-D image or animation from the prepared scene. This can be compared to taking a photo or filming the scene after the setup is finished in real life.

Important concepts and technologies applied in the field.
This technology is used in several areas; ray tracing the algorithm of tracing every ray of light starting from the viewer’s perspective back into the 3-D scene to the object. Also used in radiosity; taking of x-rays, in open graphics library and in Microsoft (Direct).

With whom and where is this field applied?
This technology is mainly applied in creating movies where CG characters are designed and included in the movies. Also this technology is applied in simulation where Computer graphics are used and tested. Also applied in game industries such as playstation, dreamcast Xbox, etc.

Advantages and Disadvantages
It helps in entertainment industries film designing, games etc. Also used in engineering, medical industries, architectural etc.
However there are some advantages including cost, taking long time to prepare and also requires computers which are powerful in terms of RAM, and Processor Speed.