Computer Vision Basics

Teaching AI to see.

What is Computer Vision?

Making computers understand images and videos.

Like teaching a computer to "see" like humans!

How Computers See Images

Images are made of pixels (tiny dots).

Each pixel has a color value (0-255 for each: Red, Green, Blue).

AI reads these numbers!

Common Tasks

Image Classification: What's in the image?

• Cat or dog?
• Apple or orange?

Object Detection: Where is it in the image?

• Find all cars in photo
• Locate faces

Image Segmentation: Outline exact shape

• Separate person from background
• Medical image analysis

Real-World Uses

Face Unlock: iPhone Face ID
Self-driving Cars: Detect pedestrians, signs
Medical: Detect diseases in X-rays
Retail: Checkout without cashier
Social Media: Auto-tag friends in photos

Example in Action

Instagram filters:

1. Detect your face
2. Find eyes, nose, mouth
3. Add filter effects

Simple Concept

AI learns by seeing thousands of examples:

• Show 10,000 cat pictures
• AI learns cat features
• AI can identify new cat pictures

Getting Started

Try with: Teachable Machine by Google

• Upload images
• Train model in browser
• Test immediately!

Remember

• Computer vision = AI seeing images
• Used everywhere today
• Start with simple projects