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Unformatted text preview: . The designer can display any view of
the object on the computer screen to see the object from a different perspective.
On paper, the designer needs to draw a different drawing for each view, and for
any change in the design, he/she will have to redraw all affected views.
Visualization deals with exploring data and information graphically. Many
computer applications deal with very large data sets. If the data is represented
numerically, it becomes difficult to find relationships between different parts of
the data. But if the same data is represented graphically, this relationship can be
visualized much easily. For example, if we have a table containing data, which
shows how pressure changes with the change of temperature in a particular
experiment, it will be much easier to visualize this relationship if the same data is
represented in the form of an (x, y) graph. Special visualization tools are available
that allow graphical representation of very large and complex data sets assisting
scientist and engineers in the analysis of their problems.
Visualization is not only restricted to scientific and engineering applications. For
example, a pie chart can be used to better visualize the percentage of earnings of a
company from its different activities, or a bar chart can be used to better represent
the year-wise change in profit of a company over a period of time.
We saw that multimedia data are typically large in volume and often require realtime and continuous delivery and presentation. Hence, multimedia applications require massive storage space, high data-transfer rate, and huge transmission
bandwidth. Existing computers, storage devices, and networks are unable to
satisfy these requirements. Hence, data compression techniques are used to reduce
the volume of multimedia data in such a way that the original data can be
reproduced with the desired quality level wherever required.
The process of reducing the volume of data by applying a compression technique
is called compression and...
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This document was uploaded on 04/07/2014.
- Spring '14