Task: Learning Journal

Open your Learning Journal by clicking on the image below

Good notes will help you organise and process data and information

Pixels

How is an image be represented in binary?

Bitmap images are made up of individual pixels. The word pixel stands for picture element. These are the tiny dots that make up a picture.

The colour of each pixel is represented as a binary number so the whole image is stored as a series of binary numbers.

If more memory bits are used to represent each pixel then more combinations of binary numbers are possible so more colours are possible in the image. This is known as colour depth

We can use a two-dimensional data array to define an image. Think about the pixels in a digital photograph. The greater the number of pixels, the larger the file size, but higher the image quality.

Task: Image Size

Open your student workbook at page 36 Read through the notes then complete the following task in your book.

1. Task 19

When you are finished screenshot your answer into your Learning Journal

Complete any unfinished tasks

Summing it all up

Lets look at the learning outcomes and decide which one best describes our current level of understanding :

Tick the one you feel is closest to your level