Teacher's Brief: The Pixel Grid
To a computer, an image isn't a "picture"—it's a spreadsheet. Each cell is a **pixel**, and the number inside represents brightness. 0 is black, 255 is white.
Human View (The Canvas)
AI View (The Matrix)
"Click the squares to draw a shape and watch the math change instantly!"
Adding Color: The RGB Channels
AI simplifies millions of colors into three "sheets": **Red, Green, and Blue**. A color photo is just three spreadsheets stacked together!
The Formula:
Pixel(x,y) = [R] + [G] + [B]
If the Red sheet says 255 and others say 0, the AI sees pure Red. If all sheets have high numbers, it sees bright, vibrant colors or White!
How AI Detects Edges (The Kernel)
AI uses a "Filter" (a small 3x3 grid) to scan the image. It does quick multiplication. High results indicate it found a feature!
1. Vertical Edge Filter
2. The Pipeline
Thousands of these math operations combine to recognize complex shapes like **eyes, ears, and faces**.