Pixel and Resolution
'Pixel' is short for 'Picture Element', Pixels are used in most electrical
screens such as computers or mobile phones, the screens are divided into
thousands and in some cases millions of pixels which can't be seen from
afar because they are so small which is useful as many coloured pixels
clustered together can create a smooth looking image which tricks the eye.
If a computers screen would be '1366x768' taken from my own computers
resolution, it is difficult to stare at a point blank range and notice the
individual pixels, but on a '640x480' screen, it will be easier to notice the
pixels on the screen, this is because a '640x480' screen contains 640 by
480 pixels all together which are larger and take up more of the screen as a
whole, making them more visible.
Pixels can only be one given colour at a time but being so small they can
combine together to make a smooth looking blend of colours.
The number of colours the pixels on a screen can be a determined by the
number of bits available, for example;
8 Bit - 256 Colours,
16 Bit (Also reffered to as High Colour)- - 65,536 Colours,
24 Bit (Also Referred to as True Colour) - 16,777,216 Colours.
'http://en.wikipedia.org/wiki/Color_depth#True_color_.2824-bit.29'
http://en.wikipedia.org/wiki/Pixel
Where do pixels come of use in Gaming?
As you'll see in the mario timeline above, as Pixels became backed up with
higher bits in computers, more colours and more detailed graphics became
available over the years that the gaming industry became increasingly
popular, with the high spec consoles we have currently such as Razer
PC's, Microsofts' 'Xbox One' or the Sony 'PS4' we can currently apply high
amounts of graphic detail into a game without overusing the capabilities of
the consoles due to new engines and such.
Which is where more pixels can be combined together on high resolution
screens and high ‘bit’ consoles, making shading and realism much more
attainable?
Vector and Raster Images.
Raster images
A Raster image is made of
in computer graphics, a raster graphics image, or bitmap, is a dot matrix
data structure representing a generally rectangular grid of pixels, or points
of colour, viewable via a monitor, paper, or other display medium. Raster
images are stored in image files with varying formats.
Vector images
Vector graphics is the use of geometrical primitives such
as points, lines, curves, and shapes or polygon(s), which are all based on
mathematical expressions, to represent images in computer graphics.
Vector graphics are based on vectors (also called paths, or strokes) which
lead through locations called control points. Each of these points has a
definite position on the x and y axes of the work plan. Each point, as well, is
a variety of database, including the location of the point in the work space
and the direction of the vector (which is what defines the direction of the
track). Each track can be assigned a color, a shape, a thickness and also a
fill.
Raster and Vector images in Gaming
Vector game can also refer to a video game that uses
a vector graphics display capable of projecting images using an electron
beam to draw images instead of with pixels, much like a laser show. Many
early arcade games used such displays, as they were capable of displaying
more detailed images than raster displays on the hardware available at that
time. Many vector-based arcade games used full-colour overlays to
complement the otherwise monochrome vector images.