A pixel is the smallest component of a display. Raster and vector images differ in how they store image data - raster uses pixels arranged in a grid, while vector uses mathematical objects and lines. When magnified, raster images may lose quality as pixels are enlarged, while vector images maintain quality at any size since they are resolution independent. Both image types have advantages and disadvantages for different uses such as printing.

1. A pixel is a single point or the smallest single component in a display device.
If magnified the raster and vector
images above, we can easily see the
differences between the two but
sometimes you cannot see the
difference at a look on a normal
view.

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When a raster image is scaled up, it usually loses quality.
pixels are also called dots
Raster images are also called Bitmap images
A raster image can be enlarged by adding more pixels (which
Photoshop randomly - but smartly - adds)
• Represents and edits photo and photo-like elements better than
vector programs with the use of continuous tones.
• Raster images are made of pixels.
disadvantage
• It is more difficult to print raster images using a limited amount of
spot colors
• Depending on the complexity of the image, conversion to vector
may be time consuming
• When a raster image is scaled up, it usually loses quality.

3. Raster images

4. • A vector program will use a mathematical formula to build an image that
can be scaled to any size without losing quality.
• Vector graphics are made of mathematical calculations that form objects
or lines.
• Vector graphics can be enlarged and printed at any size.
• Instead of pixels, vector graphics use objects and lines (shapes) to
represent images.
• Vector files can be scaled to any size without losing quality.
• Can be easily converted to raster
• Can be printed at any resolution
Disadvantage
• It is not the best format for photographs or photo-like elements with
blends of color

5. Vector Graphics