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9IPT: Organising Images (2)

posted Mar 19, 2012, 6:35 PM by Eddie Woo
Yesterday we had a brief look at the two different categories of image organisation, bitmaps and vectors. Today we'll be looking in more detail at the first - bitmaps - to see how they organise data on the most fundamental level. Hold onto your hats, it gets a little technical at times! 
  1. Define the term "bit depth", and explain how it relates to the colours in a digital image. 
  2. Explain the effects of increasing the bit depth of an image.
  3. Contrast between RGB and HSB methods of organising pixels.
  4. Illustrate the effect of reducing the bit depth of an image.
  5. Describe the process of dithering and explain why it is used in images with low bit depth.