classification of computer graphics
Introduction to Computer Graphics
The computer is an information processing machine. It is a tool for storing, manipulating
and correlating data. There are many ways to communicate the processed information to the
user. The computer graphics is one of the most effective and commonly used ways to
communicate the processed information to the user. It displays the information in the form of
graphics objects such as pictures, charts, graphs and diagrams instead of simple text. Thus we
can say that computer graphics makes it possible to express data in pictorial form. The picture
or graphics object may be an engineering drawing, business graphs, architectural structures, a
single frame from an animated movie or a machine parts illustrated for a service manual.
In computer graphics, pictures or graphics objects are presented as a collection of
discrete picture elements called pixels. The pixel is the smallest addressable screen element. It
is the smallest piece of the display screen which we can control. The control is achieved by
setting the intensity and color of the pixel which compose the screen.
Each pixel on the graphics display does not represent mathematical point. Rather, it
represents a region which theoretically can contain an infinite number of points. For example, if
we want to display point P₁ whose co-ordinates are (4.4,3.8) and point P₂ whose co-ordinates
are (4.7,3.3) then P₁ and P₂ are represented by only one pixel (4,3), as shown in the figure below
Classification of computer graphics
In the last section we have seen various uses of computer graphics. These uses
can be classified as shown in the fig. below. As shown in fig. below, the use of computer
graphics can classified according to dimensionality of the object to be drawn: 2D or 3D.
It can also be classified according to kind of picture: symbolic or Realistic. Many
computer graphics application are classified by the type of interaction. The type of
interaction determines the user’s degree of control over the object and its image.
Incontrollable interaction user can change the attributes of the images. Role of picture
gives the another classification. Computer graphics is either used for representation or it
can be an end product such as drawings. Pictorial representation gives the final
classification of used computer graphics. It classifies the use of computer graphics to
represent pictures such as line drawing, black and white, color and so on.
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The article provides a clear and informative overview of computer graphics, particularly its classification based on dimensions, picture types, interaction, and application. I appreciate how it connects these classifications with practical uses and explains the role of pixels in representing graphical information. Overall, it is a useful and well-structured resource for students and beginners seeking to build a strong foundation in computer graphics.
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The article gives a useful introduction to computer graphics by explaining how computers communicate information through pictures, charts, graphs, diagrams, and other graphical objects. The explanation of pixels is also important because it shows how a graphics display represents visual information through individual screen elements whose intensity and color can be controlled.
ReplyDeleteAnother useful aspect is the distinction between symbolic and realistic pictures. Different graphical representations serve different purposes, from engineering drawings and business charts to realistic images, and these ideas provide a good conceptual foundation for projects involving visual data. This makes Image Processing Projects For Final Year closely connected to the practical application of computer graphics concepts.
The section on pixels and picture elements also provides a starting point for understanding how digital images are represented and processed. Once images are represented as collections of pixels, operations such as analyzing, transforming, and classifying visual information become possible, which is particularly relevant to Image Classification Projects For Final Year.