Vector
graphics
Vector graphics are images which are completely based
on mathematical definitions. The vector graphic is built
of various small points which combine to make lines.
There are a few points known as Bezier curves which
connect the control points. Designers generally prefer
to use this program because it gives the best graphics.
Features
of vector graphics
The vector graphic files are usually small because they
contain only the data that makes Bezier curves and points.
The files are stored in EPS-file format. An advantage
of using vector drawings is that they can be scaled without
any loss in quality. This makes them ideal for logos because
altering the size occurs frequently.
Vector graphics also possess the following properties:
- The drawings can only be scaled up to 20% regardless
of size.
- If a vector graphic drawing is reduced too much
the small lines will disappear.
- The small errors and faults can become visible if
the drawing is enlarged too much.
Applications
and programs
The most recognized applications which handle vector based
graphics are:
- Adobe illustrator
- Macromedia freehand
- Corel draw
Vector
graphics compared to bitmap graphics
Vector graphic based logos are preferred over bitmap for
the following reasons:
- Vector graphics are more flexible than bitmap which
means the images can be resized easily.
- Vector images look better on monitors because of
the high resolution.
- When the vector graphics are printed, give better
printouts than bitmap files because they can be stretched
without any loss in the resolution
- If the resolution is higher in quality, the vector
graphics will appear much better; the bitmap graphics
appear to be the same whether the resolution is high
or low.
- Bitmap graphics are composed of pixels whereas vector
graphics are composed of paths.
- In bitmap graphics each pixel can be of a different
color.
- Vector graphics appear smooth on any resolution,
while bitmap graphics give a rough result if not provided
with better resolution.
- Bitmap graphics are used for photography and vector
graphics are preferred for illustration.
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