Sunday, July 31, 2016

Storing Graphical Information on Computer

Images, Pixels and RGB

After viewing the video several times, my knowledge on storing graphic information has significantly increased and I have learnt many new terms associated with storing digital graphics on computers. Whilst watching the video I learnt that when we are shown an image on a screen, it can be broken down into data and tiny dots known as pixels. Pixels can't be easily seen because they're so small, but when a screen is magnified you can see tiny little dots of light which are known as pixels. Pixels are made up of green, blue and red little lights. A single pixel is made up of red, green and blue values that effect the appearance of an image. RGB value intensities range from 0-255 which effect an image's colour and brightness. JPEG, GIF and PNG are all examples of image files that contain millions of red, green and blue values. Today resolutions are much bigger than they previously were. A resolution is the dimensions by which you can measure how many pixels are on a screen, and the denser/packed the space is, the sharper and clearer the image is. All digital and computer data are represented by BIT.  It has two states: on and off, but instead computers use ones and zeros to store all of their data. These ones and zeros are known as binary. Image files are simply a bunch of ones and zeros. However, many digital artists usually use hexadecimals to represent colours, rather than using binary. A hexadecimal is basically a shorter representation of binary for representing colour. Images allow us to grow and communicate information across any language without using words.

1 comment:

  1. Well written and explained Lianna. Also found your video links posted on my blog.