Representing Images

Lesson Instructions

Watch and follow the YouTube video, the lesson contains three parts:

  1. Key Information and content - all you need to do here is watch and listen

  2. Learning activity - this activity is a fill in the blanks with a review

  3. Consolidation - this is a past exam question and is for deliberate practice to check your understanding.

Task - Fill in The Blanks

Representing Images - Fill in the blanks

Task - Exam Questions - Deliberate Practice

Representing Images - Exam Question

Mark Scheme

1 mark per bullet to max 3.

  • Image made of / split up into pixels

  • Each pixel given a binary code...

  • ...which represents the colour of that pixel

  • Each colour is given a different/unique binary code.

  • Metadata stored alongside the image

BP1 needs idea of picture made up of pixels, not just mention of the word “pixel”

Not enough to say “each colour is given a binary code”, must have the idea of this being unique or different for each different colour.

Accept examples of metadata such as height/width, geolocation, etc. Do not accept file size/file name.