Lesson Introduction: Diving into the World of Images in Computer Science
Introduction
Imagine you are in a world where every image has a secret language, a code that tells your computer how to display it perfectly on your screen. Today, we will unlock that language and explore the fascinating realm of digital images.
Hook: The Image Challenge
To kick things off, let’s start with a little challenge! I want you to take a moment to look at the image below (imaginary for now since we're in a classroom setting).
- What details can you observe?
- How many colours do you think are in this image?
- If you had to explain this image to someone who can’t see it, how would you describe it?
Take a minute to jot down your thoughts on scrap paper—don’t worry about being perfect, just let your imagination flow!
Bridging into Content
Now that we've warmed up our brains, let's discuss the importance of images in the digital world. Every image you see on your devices—from breathtaking landscapes to your favourite memes—is made up of tiny elements called pixels.
In today's lesson, we will learn about:
- How images are represented in a computer
- Understanding pixelation and resolution
- Different image formats and their uses (JPEG, PNG, GIF, etc.)
Learning Objectives
By the end of this lesson, you will be able to:
- Describe how digital images are structured and manipulated.
- Identify different image formats and explain their strengths and weaknesses.
- Understand the concept of resolution and its impact on image quality.
Let’s get started and decode the language of images!