1.2.4 Data Storage (3 Images)

Describe what is meant by the term ‘colour depth’ in digital images and how increasing the colour depth affects the image quality and file size.

Define image resolution and explain how increasing the resolution affects both the quality of an image and its file size.

A digital image with a resolution of 800×600 pixels has its resolution doubled and its colour depth increased from 8 bits to 16 bits per pixel. Discuss the impact these changes will have on the quality and file size of the image.

What is metadata in the context of digital images, and give two examples of information it might contain.

Explain how an image is represented using pixels and binary code.