🎨 Digital Images Explained: RGB, Raster & Vector

🌈 1. RGB Displays – How Screens Create Color

• Your monitor is a grid of tiny red, green, and blue lights (RGB)

• Pixel = 1 set of these 3 lights working together

• Color mixing magic:

  • 🔴 Red + 🟢 Green = 🟡 Yellow

  • 🔴 Red + 🔵 Blue = 🟣 Magenta

  • 🟢 Green + 🔵 Blue = 🟢 Cyan

  • 🔴+🟢+🔵 = ⚪ White (all lights at max)

• 16.7 million colors possible by adjusting light brightness!

🎮 Gamer Example:
Fortnite’s vibrant graphics use RGB values for every pixel – that’s why sunset skies look so realistic.

📸 2. Raster Images (Like Photos)

• How they work: Stores color data for every single pixel

• File example: JPEG, PNG, GIF

• Pros:

  • Perfect for photos (all details preserved)

  • Easy to create (just snap a pic with your phone 📱)

• Cons:

  • Gets pixelated when enlarged (like blurry Minecraft textures)

  • Large file sizes (a 12MP photo = ~3.5MB)

💾 Storage Fact:
A 4K wallpaper (3840×2160 pixels) contains 8,294,400 pixels – each needing 3 bytes for RGB!

✏️ 3. Vector Images (Like Logos & Animations)

• How they work: Uses math formulas for shapes (points, curves)

• File example: SVG, AI, EPS

• Pros:

  • Infinite zoom without quality loss (perfect for logos 🏢)

  • Tiny file sizes (a complex logo might be just 50KB)

  • Easy to edit (change colors/shapes instantly)

• Cons:

  • Can’t handle photo-realistic detail

  • Requires software like Adobe Illustrator 💻

🔍 Side-by-Side Comparison

💡 Pro Tips for Content Creators

1. For Instagram: Use JPEG (raster) for photos, SVG (vector) for logos

2. For Gaming: 3D games combine both (vector models + raster textures)

3. Memory Hack:

   • Social media? Raster

   • Printing big posters? Vector